Model 5050 Stretcher Chair Maintenance Manual Rev J Jan 1999

Page 1

IMPORTANT

File in your

maintenance

records

5050 Stretcher Chair

MAINTENANCE MANUAL

For stretchers with serial numbers of 9711034601 and above

For Parts or Technical Assistance:

1–800–327–0770

Page 3

Table of Contents

Assembly Drawings and Parts Lists (Continued)

Caster Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Steer Caster Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Molded Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Jack Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Jack Base Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Base Hood/Label Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Base Hood Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Midsection Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Fowler Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46, 47

Dependent Leg/Stationary Foot Section Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48–50

Dependent Leg/Adjustable Foot Section Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51–53

Independent Leg/Stationary Foot Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54–57

Independent Leg/Adjustable Foot Section Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58–61

Independent Leg Section Locking Link, Right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Independent Leg Section Locking Link, Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Non–Transfer Siderail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Transfer Siderail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Board Support Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Adjustable Push Bar Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Stationary Push Bar Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Heel Stirrup Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Heel Stirrup Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Tethered I.V. Pole Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Tethered I.V. Pole Trough Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Tethered I.V. Pole Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

I.V. Holder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Wrist Rest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Wrist Rest Assembly, Temporal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Wrist Rest Accessory Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Leg Support Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Leg Support Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Limited Warranty

Obtaining Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Supplemental Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Return Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Freight Damage Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Page 4

Introduction

INTRODUCTION

This manual is designed to assist you with the maintenance of the model 5050 Stretcher Chair. Read it thoroughly before using the equipment or beginning any maintenance on it.

SPECIFICATIONS

Maximum Weight Capacity

400 pounds

Overall Stretcher Length/Width

76”/30”

Patient Surface Length/Width (Mattress)

74”/24”

Minimum/Maximum Stretcher Height (Floor to Litter Surface)

22”/33.5”

Foot Section Articulation

0
to 80

Fowler Articulation

0
to 90

Trendelenburg/Reverse Trendelenburg Articulation

+18
/–18

WARNING / CAUTION / NOTE DEFINITION

The words WARNING, CAUTION and NOTE carry special meanings and should be carefully reviewed.

WARNING

The personal safety of the patient or user may be involved. Disregarding this information could result in injury

to the patient or user.

CAUTION

These instructions point out special procedures or precautions that must be followed to avoid damaging the

equipment.

NOTE

This provides special information to make maintenance easier or important instructions clearer.

WARNING

Always apply the caster brakes when a patient is getting on or off the Stretcher Chair. Push on the Stretcher

Chair to ensure the brakes are securely locked. Always engage the brakes unless the Stretcher Chair is being

moved. Injury could result if the Stretcher Chair moves while a patient is getting on or off the Stretcher Chair.

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Page 5

Preventative Maintenance

CHECKLIST

All fasteners secure (reference all assembly prints)

Siderails move and latch properly – securing pins and screws are intact

Transfer surface (optional equipment) intact and working properly

Engage brake pedal and push on the stretcher to ensure all casters lock securely

All casters secure and swiveling properly

Steer function working properly

Fowler/leg articulation operating properly – adjust as necessary

Trendelenburg/Reverse Trendelenburg operating properly

No leaks at hydraulic connections

Hydraulic jacks holding properly

Hydraulic drop rate set properly. (see page 11 for procedure)

Hydraulic oil level sufficient (see page 9 for procedure)

Oxygen bottle holder intact

No rips or cracks in mattress cover or restraint straps – all Velcro intact and in good condition

Head and foot section bumpers intact and in good condition

Lubricate where required, including the brake adjuster assembly and brake cam and the independent

foot section mechanisms (optional equipment)

Accessories and mounting hardware in good condition and working properly

Serial No.______________

______________

______________

______________

______________

Completed By:_________________________________

4

Date:_____________

Page 6

Cleaning

Hand wash all surfaces of the stretcher with warm water and mild detergent. Dry thoroughly. DO NOT

STEAM CLEAN, PRESSURE WASH, HOSE OFF OR ULTRASONICALLY CLEAN. Using these methods

of cleaning is not recommended and may void this product’s warranty.

Clean Velcro AFTER EACH USE. Saturate Velcro with disinfectant and allow disinfectant to evaporate. (Appropriate disinfectant for nylon Velcro should be determined by the hospital.)

In general, when used in those concentrations recommended by the manufacturer, either phenolic type or

quaternary type disinfectants can be used with Staph–Chek fabrics. Iodophor type disinfectants are not recommended for use on Staph–Chek fabrics because staining may result. The following products have been

tested by the Herculite Laboratory and have been found not to have a harmful effect on Staph–Chek fabrics

WHEN USED IN ACCORDANCE WITH MANUFACTURERS RECOMMENDED DILUTION.*

TRADE NAME

DISINFECTANT

TYPE

MANUFACTURER

*MANUFACTURER’S

RECOMMENDED

DILUTION

A33

Quaternary

Airwick (Professional Products Division)

2 ounces/gallon

A33 (dry)

Quaternary

Airwick (Professional Products Division)

1/2 ounce/gallon

Beaucoup

Phenolic

Huntington Laboratories

1 ounce/gallon

Blue Chip

Quaternary

S.C. Johnson

2 ounces/gallon

Elimstaph

Quaternary

Walter G. Legge

1 ounce/gallon

Franklin

Phenomysan

F2500

Phenolic

Purex Corporation

1 1/4 ounce/gallon

Franklin Sentinel

Quaternary

Purex Corporation

2 ounces/gallon

Galahad

Phenolic

Puritan Churchill Chemical Company

1 ounce/gallon

Hi–Tor

Quaternary

Huntington Laboratories

1/2 ounce/gallon

LPH

Phenolic

Vestal Laboratories

1/2 ounce/gallon

Matar

Phenolic

Huntington Laboratories

1/2 ounce/gallon

Omega

Quaternary

Airwick (Professional Products Division)

1/2 ounce/gallon

Quanto

Quaternary

Huntington Laboratories

1 ounce/gallon

Sanikleen

Quaternary

West Chemical Products

2 ounces/ gallon

Sanimaster II

Quaternary

Service Master

1 ounce/gallon

Vesphene

Phenolic

Vestal Laboratories

1 1/4 ounce/ gallon

Quaternary Germicidal Disinfectants, used as directed, and/or Chlorine Bleach products, typically 5.25% Sodium Hypochlorite in dilutions ranging between 1 part bleach to 100 parts water, and 2 parts bleach

to 100 parts water are not considered mild detergents. These products are corrosive in nature and

may cause damage to your stretcher if used improperly. If these types of products are used to clean

Stryker patient handling equipment, measures must be taken to insure the stretchers are rinsed with clean

water and thoroughly dried following cleaning. Failure to properly rinse and dry the stretchers will leave a corrosive residue on the surface of the stretcher, possibly causing premature corrosion of critical components.

NOTE

Failure to follow the above directions when using these types of cleaners may void this product’s warranty.

REMOVAL OF IODINE COMPOUNDS

This solution may be used to remove iodine stains from mattress cover and foam footrest pad surfaces.

1. Use a solution of 1–2 tablespoons Sodium Thiosulfate in a pint of warm water to clean the stained area.

Clean as soon as possible after staining occurs. If stains are not immediately removed, allow solution to

soak or stand on the surface.

2. Rinse surfaces which have been exposed to the solution in clear water before returning bed to service.

4.1

Page 7

Notes

4.2

Page 8

Service Information

HYDRAULIC JACK REPLACEMENT

Required Tools:

3/8” Wrench

Straight Screwdriver

3” Extension

Needle–Nosed Pliers

1/2” Wrench

(2) 7/16” Wrenches

Allen Wrench

1/2’ Socket

Replacement Procedure:

NOTE

It requires two people to safely perform this procedure.

1. Apply the Stretcher Chair brakes. Raise the litter to full up. Raise the Fowler and the siderails.

2. Use a 3/8” wrench to remove the bolts in the litter support tubes above the black bellows on both ends

of the litter.

3. With the assistance of another person, lift the litter off the base and set it aside, taking care not to damage

the leg section linkages and other litter components.

4. Push down on the jack actuator to put the jack in the full down position.

5. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

6. Using an Allen wrench and a 1/2” wrench, remove the nylon lock nut underneath the pump piston.

7. Using a straight screwdriver and pump spring compression tool (p/n 5050–500–70) compress the pump

spring and pry the pump link and socket head fastener out of the pump cylinder.

CAUTION

Do not let the pump piston come out of the jack or damage may occur.

8. Using a 1/2” socket and a 1/2” wrench, remove the four bolts, washers, and nuts holding the jack support

clamps to the base frame.

9. Using the 1/2” socket and 1/2” wrench, remove the four bolts, washers, and nuts holding the jack base

to the base frame. (Using a 3” extension may be required). Remove the jack from the base frame.

10. Reverse steps 8 and 9 to install the replacement jack.

11. For head end jack only – using two 7/16” wrenches, remove the fasteners for the brake drive link and

move it to the side.

12. With the pump pedal in the full–up position, insert the pump link into the pump pivot assembly and align

the hole in the end of the pump link to the hole in the pump piston on the jack. Pull out or push in on the

pump piston as required. Remove the pump link.

13. Install the spring guide and grease before installing the jack spring onto the pump piston.

14. Place the spring collar onto the end of the compression spring.

15. Put the spring compression tool on the 1”x1” tubing with the handle to the right with the spring collar in

the recessed “U”–shaped plate. Push the entire assembly forward until it stops and tighten the knob.

16. Visually align the pump piston to the center of the cut–out in the “U”–shaped plate. This will prevent pushing the pump piston in while compressing the jack spring. Continue to check the alignment while compressing the spring.

17. Compress the jack spring by pulling back on the fixture handle. While doing this, use your left hand to

push the upright, with the plastic sleeve, to the right. This prevents binding of the dowel pin in the slot

of the fixture. Compress the jack spring until the fixture bottoms out.

18. While keeping pressure on the jack spring, use your left hand to place the pump link into the pump pivot

assembly and align the other end of the link to the hole in the pump piston.

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Page 9

Service Information

HYDRAULIC JACK REPLACEMENT (CONTINUED)

19. With pressure still on the jack spring, install the socket head cap screw through both the pump link and

the pump piston.

20. Partially thread the locking nut for the socket head cap screw before taking the jack fixture off the 1”x1”

tube.

21. Tighten the locking nut for the socket head cap screw.

22. Pump the jack fully up and lower to ensure proper operation.

23. Reinstall the base hood, securing it to the Velcro.

24. With the assistance of another person, place the litter back on the base.

25. Use a 3/8” wrench to install the bolts in the litter support tubes above the black bellows on both ends of

the litter.

26. Pump the litter fully up and down to verify proper operation before returning the Stretcher Chair to service.

JACK PUMP PISTON REPLACEMENT

Replacement pump piston part # – 715–100–325

Jack tool part # – 5050–500–70

Required Tools:

3/8” Wrench

Straight Screwdriver

Needle–Nosed Pliers

1/2” Wrench

Allen Wrench

7/8” Wrench

Replacement Procedure:

NOTE

It requires two people to safely perform this procedure.

1. Apply the Stretcher Chair brakes. Raise the litter to full up. Raise the Fowler and the siderails.

2. Use a 3/8” wrench to remove the bolts in the litter support tubes above the black bellows on both ends

of the litter.

3. With the assistance of another person, lift the litter off the base and set it aside, taking care not to damage

the leg section linkages and other litter components.

4. Push down on the jack actuator to put the jack in the full down position.

5. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

6. Using an Allen wrench, and a 1/2” wrench, remove the nylon lock nut underneath the pump piston.

7. Using a straight screwdriver and pump spring compression tool (p/n 5050–500–70), compress the pump

spring and pry the pump link and socket head fastener out of the pump cylinder.

8. Remove the jack spring.

9. Using needle–nosed pliers, remove the spring holder.

10. Using a 7/8” wrench, remove the pump piston assembly and the bottom seal and discard the seal. There

may be some slight hydraulic fluid leakage.

11. Install the replacement seal into the jack base.

12. Install the replacement pump piston assembly and tighten fully with a 7/8” wrench.

13. For head end jack only – using two 7/16” wrenches, remove the fasteners for the brake drive link and

move it to the side.

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Page 10

Service Information

JACK PUMP PISTON REPLACEMENT (CONTINUED)

14. With the pump pedal in the full–up position, insert the pump link into the pump pivot assembly and align

the hole in the end of the pump link to the hole in the pump piston on the jack. Pull out or push in on the

pump piston as required. Remove the pump link.

15. Install the spring guide and grease before installing the jack spring onto the pump piston.

16. Place the spring collar onto the end of the compression spring.

17. Install the spring compression tool onto the 1”x1” tubing with the handle to the right and capture the spring

collar in the recessed “U”–shaped plate. Push the entire assembly forward until it stops and tighten the

knob.

18. Visually align the pump piston to the center of the cut–out in the “U”–shaped plate. This will prevent pushing the pump piston in while compressing the jack spring. Continue to check the alignment while compressing the spring.

19. Compress the jack spring by pulling back on the fixture handle. While doing this, use your left hand to

push the upright, with the plastic sleeve, to the right. This prevents binding of the dowel pin in the slot

of the fixture. Compress the jack spring until the fixture bottoms out.

20. While keeping pressure on the jack spring, use your left hand to place the pump link into the pump pivot

assembly and align the other end of the link to the hole in the pump piston.

21. With pressure still on the jack spring, install the socket head cap screw through both the pump link and

the pump piston.

22. Partially thread the locking nut for the socket head cap screw before taking the jack fixture off the 1”x1”

tube.

23. Tighten the locking nut for the socket head cap screw.

24. Pump the jack fully up and lower to ensure proper operation.

25. Reinstall the base hood, securing it to the Velcro.

26. With the assistance of another person, place the litter back on the base.

27. Use a 3/8” wrench to install the bolts in the litter support tubes above the black bellows on both ends of

the litter.

28. Pump the litter fully up and lower to ensure proper operation before returning the Stretcher Chair to service.

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Page 11

Service Information

HYDRAULIC VALVE REPLACEMENT

Required Tools:

3/8” Open End Wrench

1/2” Diameter Rod

Stiff Wire (with bent, pointed end)

Torque Wrench (with Ft. Lbs. adjust.)

Small Needle Nose Pliers

Replacement of the Poppet Valve:

WARNING

To avoid personal injury or damage to the stretcher, remove the litter and the base hood with the assistance

of another person before beginning service on the jacks. Lower the jack rod completely to relieve the pressure

on the pump piston side of the jack. This will prevent large hydraulic fluid loss and possible damage when

the base plugs are removed.

1. Remove the base plug (D) and the seal (L).

2. Remove the compression spring (C).

3. Using a small needle nose pliers, remove the poppet (F).

4. Install the new poppet (F).

5. Install the compression spring (C).

6. Install the seal (L) and the base plug (D) and tighten to 10 foot–pounds torque.

7. Pump up the jack to the maximum height. Apply weight and ensure the jack holds its position and there

are no hydraulic leaks before replacing the base hood and the litter.

ITEM

A

B

C

D

E

F

H

J

K

L

M

N

PART NO.

PART NAME

45–966

45–967

390–2–134

715–1–301

715–1–309

715–1–341

715–100–325

926–20–153

926–20–154

926–20–156

1210–70–9

5050–70–50

O–Ring

O–Ring

Conical Comp. Spring

Base Plug

Valve Plug

Poppet

Pump Replacement Ass’y

Check Valve

Seal

Seal

Valve Assembly

P.C. Valve

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Page 12

Service Information

HYDRAULIC VALVE REPLACEMENT (CONTINUED)

Replacement of the Check Valve:

NOTE

It requires two people to safely perform this procedure.

WARNING

To avoid personal injury or damage to the stretcher, always remove the litter and the base hood before beginning service on the jacks.

1. Using a 3/8” open end wrench, remove square head set screws from both the head end and the foot end

jack support tubes. Remove the litter top and set it aside.

2. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

3. Lower the jack to the full down position. The actuator must be manually lowered while the appropriate

release pedal is depressed.

4. Remove the base plug (D) and the seal (L).

5. Remove the valve plug (E).

6. Using a stiff wire with a bent, pointed end, remove the check valve (J) and the seal (K).

7. Install the seal (K) flat to the bottom of its hole with a 1/2” diameter rod.

8. Install the new check valve (J) with the beveled end up (as shown in the illustration).

9. Install the valve plug (E) and tighten to 10 foot–pounds torque.

10. Install the seal (L) with the base plug (D) and tighten to 10 foot–pounds torque.

11. Pump up the jack to the maximum height. Apply weight and ensure the jack holds its position and there

are no hydraulic leaks before replacing the base hood and the litter.

CHECKING HYDRAULIC FLUID LEVEL

Required Tools:

3/8 Open End Wrench

3/4 Open End Wrench

Procedure:

1. Using a 3/8 open end wrench, remove square head set screws from both head and foot end jack support

tubes. Remove litter top, taking care not to damage the leg section linkages and other litter components.

2. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

3. Be sure there are no hydraulic leaks. If there are, jack replacement will be necessary. Lower the jack

to the full down position. Using a 3/4 open end wrench, slowly turn the fill plug located on the side of the

reservoir counterclockwise to allow excess system pressure to vent. Remove the fill plug.

4. The hydraulic fluid should be visible at the bottom of the fill hole. If it is not, add Mobil Aero HFA hydraulic

fluid (Stryker part number 2020–70–475) until the fluid is visible at the bottom of the fill hole. Replace

the fill plug.

CAUTION

Use of other types of oil may damage hydraulic units.

5. Replace the base hood and the litter.

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Page 13

Service Information

ADJUSTABLE PRESSURE COMPENSATED (P.C.) VALVE REPLACEMENT

WARNING

To avoid personal injury or damage to the stretcher, always remove the litter and the base hood before beginning service on the jacks. Lower the jack rod completely to relieve the pressure on the pump piston side of

the jack.

Required Tools:

3/8” Wrench

13/16” Wrench

Replacement Procedure:

NOTE

It requires two people to safely perform this procedure.

1. Apply the Stretcher Chair brakes. Raise the litter to full up. Raise the Fowler and the siderails.

2. Use a 3/8” wrench to remove the bolts in the litter support tubes above the black bellows on both ends

of the litter.

3. With the assistance of another person, lift the litter off the base and set it aside, taking care not to damage

the leg section linkages and other litter components.

4. Push down on the jack actuator to put the jack in the full down position.

5. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

6. Using a 13/16” wrench, remove the adjustable P.C. valve (see page 8 for part identification).

7. Check for any contaminants in the valve as well as the jack base.

8. Install a new P.C. valve. Moisten the O–ring seal with a little hydraulic fluid to ensure a good seal.

9. Tighten the valve manually and then an additional 1/8–1/4 turn with 13/16” wrench. Do not over –tighten

or damage may occur to the O–ring seal.

10. Pump up the jack to the maximum height and press the release pedal to lower it to check the jack’s operation.

11. Check for any hydraulic fluid leaks before replacing the base hood and litter.

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Page 14

Service Information

JACK DESCENT RATE ADJUSTMENT

Required Tools:

Bungee Cords

Adjustment Procedure:

1. Pump the litter up to full height

2. Lift the base hood, separating the Velcro holding it to the base frame.

3. The adjustable descent valve is located on the base of the jack and has a blue knob on the end. To adjust,

loosen the silver locking ring by turning it counterclockwise. Turning the blue knob clockwise will increase

the rate of litter descent. Turning it counterclockwise will decrease the rate of descent.

4. Adjust the valve so that the jack at the foot end of the Stretcher Chair will descend slightly faster than

the jack at the head end.

5. Remove the bungee cords supporting the base hood and secure the hood to the base frame.

NOTE

The jack descent rate was preset at the factory to drop the foot end 3–7 seconds faster than the head. It is

recommended that the foot drops faster to avoid patient disorientation.

STEERLOCK SPRING REPLACEMENT

Required Tools:

3/32” Hex Allen Wrench

Bungee Cords

11/32” Wrench

Pliers

Replacement Procedure:

1. Raise the litter to full–up.

2. Lift up the plastic base hood, separating the Velcro holding it to the base frame and, using the bungee

cords, suspend it from the litter.

3. Using a 3/32” hex Allen wrench and a 11/32” wrench, remove the 8–32 fastener, washer and nut holding

the steerlock arm onto the base.

4. Holding onto the extension spring, twist the steerlock arm back and forth to remove it from the spring.

5. Using pliers, remove the spring from the steerlock weldment over the caster and discard it.

6. Grease the end of the steerlock weldment and install the replacement extension spring onto it until the

spring reaches the bend in the steerlock weldment arm.

7. Grease the end of the steerlock arm and, while holding the extension spring, insert the steerlock arm into

the spring until it reaches the bend in the steerlock arm (rotating the steerlock arm while pushing on it

may help).

8. Reconnect the steerlock arm to the base with the 8–32 fastener, washer, and nylon lock nut and tighten.

9. Actuate the brake steer pedal and ensure the steerlock latch engages into the notch in the locking caster.

10. Remove the bungee cords supporting the base hood and secure the hood to the base frame.

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Page 15

Service Information

BRAKE/STEER PEDAL REPLACEMENT

Required Tools:

Two (2) 7/16” Wrenches

Hammer

3/16” Drive Pin

3/8” Box End Wrench

Loctite 409 or Equivalent

Bungee Cords

Replacement Procedure:

NOTE

It may require two people to safely perform this procedure.

1. Apply the brakes, if possible, with the remaining good brake/steer pedal. If this is not possible, have

someone assist you with the following: Using a large wrench or pry tool, push down on the brake bar

(compressing the spring) and manually move the molded plastic brake cam over to the brake position

at both ends of the base.

2. Raise the litter to full up. Raise the Fowler and the siderails.

3. Suspend the base hood from the litter and out of the way with bungee cords. Or, for better access, remove the litter by following the next 3 steps.

4. Using a 3/8” wrench, remove the bolt in the litter support tube above the black bellows on both ends.

5. With the assistance of another person, lift off the stretcher litter and set it aside, taking care not to damage

the leg section linkages, or other litter components.

6. Lift off the plastic base hood, separating the Velcro holding it to the base frame.

7. Using the 7/16” wrenches, remove the bolt, nut and washers holding the square brake drive link assembly

on the brake actuator on both sides of the base.

8. While lifting one end (head or foot) of the base, rotate the brake/steer pedal so its bottom is facing up.

9. Use a hammer and 3/16” drive pin to remove the groove pin (part number 26–261) from the plastic brake/

steer pedal (part number 715–201–201). Be sure that you are driving the pin out from the bottom of the

pedal towards the top of the pedal.

10. Once the groove pin has been removed, remove the brake/steer pedal from the brake rod (use of a hammer may be required).

11. Repeat step 8 so the brake actuators are upright.

12. Fit the replacement brake/steer pedal onto the brake rod.

13. Align the holes in the brake/steer pedal with the holes in the brake rod and use a hammer to install the

replacement groove pin. Drive the pin in from the top of the pedal until it is flush to the top of the pedal.

14. Reverse step 7 to reattach both brake drive link assemblies to the base (When the pedal is reconnected

it will already be in the brake position).

15. Actuate the brake/steer pedal to ensure the unit functions fully in brake, neutral and steer modes.

16. Reinstall the base hood, securing it to the Velcro.

17. With the assistance of another person, place the litter back on the base (if necessary).

18. Use a 3/8” wrench to install the bolts in the litter support tubes above the black bellows on both ends of

the litter.

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Page 16

Service Information

SIDERAIL ADJUSTMENT

Required Tools:

3/16” Hex Allen Wrench

Loctite 242

WARNING

Proper siderail latching is necessary for patient and user safety. Check the siderails frequently to ensure both

sides latch securely in both the upright and down positions. In addition, check for proper lubrication of the

release handle and for secure dowel pins through the sides of the siderails.

If siderail will not latch in place:

1. Ensure the red knob is seated fully when released in either the upright or down position (down position

will be slightly tucked under the litter). If it is not, use a 3/16” hex Allen wrench to remove the button head

cap screw in the end of the red knob. Apply Loctite 242 to the end of the screw, replace it in the knob,

and tighten fully.

If a release knob assembly needs replacing:

1. Use a 3/16” Allen wrench to remove the button head cap screw, washer and spring in the end of the red

release knob.

2. Hold the siderail to keep it from swinging and pull off the release knob assembly.

3. Apply grease to the release knob shaft and inspect the locking pin holes to ensure they are not obstructed.

4. Install the replacement knob and push it all the way in so the siderail latches in the upright position.

5. Carefully pull the release knob back and put the siderail in the down position. Push the knob back in fully

and ensure it latches in the down position. If it does not, pull out on the knob and rotate it 180
. It should

now latch in both the upright and down positions.

6. Replace the compression spring and washer.

7. Apply Loctite 242 to the end of the screw and replace it in the end of the knob and tighten fully.

8. Check again to ensure the knob latches in place in both positions.

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Page 17

Service Information

SIDERAIL REPLACEMENT (TRANSFER/NON–TRANSFER)

Required Tools:

Hammer

Loctite 242

1/4” Drive Pin

Pliers

3/16” Hex Allen Wrench

Replacement Procedure:

1. Apply the Stretcher Chair’s brakes. Raise the litter to full height and put the Fowler up.

2. Rotate the siderail to a horizontal position and support it.

3. With the siderail in the horizontal position, use a 1/4” drive pin and a hammer to drive out the pin holding

the siderail.

4. While continuing to support the siderail from underneath (to prevent it from falling), pull back on the red

release knob and remove the knob assembly with the latch pivot shaft.

5. Once the knob assembly and latch pivot shaft are removed, the entire siderail assembly will pull away

from the litter and off the pivot hub at the foot end of the midsection. Save the latch housing insert. It

will be used for assembly of the replacement siderail.

6. Place the latch housing insert into the main tube of the replacement siderail and rotate it so the single

hole in the face of it is upright (pointing to the top of the replacement siderail). This orientation must be

maintained throughout assembly.

7. Place the replacement siderail on the pivot hub at the foot end of the midsection and swing it back into

place in the upright position.

8. Using a 3/16” hex Allen wrench, remove the fastener from the end of the red release knob and disassemble the washer, spring and latch pivot shaft.

9. Insert the latch pivot shaft through the hole in the litter frame and into the latch housing insert and orient

it so all the holes in the siderail tube, latch housing insert, and the latch pivot shaft are aligned. Again,

this alignment must be maintained. It may help to use the 1/4” drive pin to hold all three parts in alignment.

Insert the pin from the outside of the siderail to the inside with the siderail in the upright position.

10. From below the siderail, remove the punch being used to maintain alignment, insert the dowel pin from

the top of the siderail and drive it in using a hammer until it is flush with the top surface of the siderail.

Use the punch to set the pin slightly deeper. The pin should be approximately the same depth on both

sides of the siderail but be sure not to drive it back out the other side.

11. With the siderail in the upright position, replace the red release knob over the shaft and into the position

locking holes.

12. Ensure the siderail will lock in both the upright and down positions and that the down position locks the

siderail at a slight inward angle (not outward).

13. If this is not the case, rotate the knob 180
and check the positioning again.

14. Replace the compression spring and the steel washer inside the end of the red release knob . Apply Loctite 242 to the Allen head screw, install it into the end of the red release knob and tighten fully.

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Page 18

Service Information

DEPENDENT LEG SECTION RIGID LINK REPLACEMENT

Required Tools:

(2) 9/16” Wrenches

1/2” Wrench

3/16” Hex Allen Wrench

Replacement Procedure:

1. Pump the litter to full height, lower the Fowler so that stretcher chair is flat and apply brakes.

2. Using two 9/16” wrenches, remove the nylon lock nut, hex head bolt), and nylon washers at the foot end

of the rigid connecting link.

3. Using a 1/2” wrench and a 3/16” hex Allen wrench, remove the nylon lock nut, bolt and washers at the

head end of the rigid connecting link and remove the link.

4. Reverse steps 2 & 3 to install the replacement rigid connecting link.

5. Actuate the Fowler up and down to make sure that the rigid connecting link allows the foot section to follow

smoothly.

FOOT REST PAN REPLACEMENT (FOR STATIONARY OR ADJUSTABLE FOOT REST)

Required Tools:

5/32” Hex Allen Wrench

7/16” Wrench

Velcro Strip

Replacement Procedure:

1. Pump the litter to full height, lower the Fowler so the Stretcher Chair is flat and apply the brakes.

2. Be sure the foot rest pan is in the flat, stored position and remove the foot rest pad.

3. Using a 5/32” hex Allen wrench and a 7/16” wrench, remove the nylon lock nut, bolt, and washers from

both of the foot rest pivots, located underneath the foot section.

4. Lift up and remove the damaged foot rest pan and discard.

5. Install the replacement foot rest pan, lying it flat on the foot section of the litter with the L–brackets from

the pan fitting down underneath the litter surface.

6. For stationary foot rest only – align the holes in the foot pan L–brackets with the round pivots on the foot

section frame.

7. Reverse step 3 to install the necessary fasteners.

8. Replace foot rest pad and Velcro if necessary

9. Ensure the foot rest pan moves smoothly from the stored position to down and back.

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Page 19

Service Information

DEPENDENT LEG SECTION FRAME REPLACEMENT

Required Tools:

(2) 9/16” Wrenches

3/16” Hex Allen Wrench

1/2” Wrench

Replacement Procedure:

1. Pump the litter to full height, lower the Fowler so the Stretcher Chair is flat and apply brakes.

2. Remove the litter mattress and set aside.

3. Using two 9/16” wrenches, remove the nylon lock nuts, bolts and washers on both of the rigid connecting

links at the foot end.

4. Using a 3/16” hex Allen wrench and a 1/2” wrench, remove the nylon lock nuts, bolts and washers for

the leg section frame pivot and remove the entire leg section frame.

5. Install the replacement leg section frame, reversing step 4 to reconnect the leg section pivots.

6. Reverse step 2 to reconnect the rigid connecting links to the leg section.

7. If the replacement leg section did not include a new foot rest pan, install the pan from the old leg section

following the foot rest pan replacement procedure on page 15.

8. Actuate the Fowler up and down to make sure the foot section follows smoothly.

9. Replace the litter mattress.

STATIONARY PUSH BAR REPLACEMENT

Required Tools:

(2) 9/16” Wrenches

3/32” Hex Allen Wrench

3/16” Hex Allen Wrench

1/2” Wrench

Replacement Procedure:

1. Apply the brakes, raise the litter to full height and raise the Fowler to 90
.

2. Using the 3/32” hex Allen wrench, remove the button head cap screws from the small plastic covers at

each end of the push bar. Remove the covers and set them aside.

3. Using the 3/16” hex Allen wrench and the 1/2” wrench, remove the button head screw, nylock nut, and

washers on both sides of the push bar. (After the second fastener is removed, the push bar will rotate

down and hang freely).

4. Using two 9/16” wrenches, remove the remaining 3/8” bolt, centerlock nut, and washers on both sides

of the push bar and remove the push bar.

5. Reverse steps 2–4 to install the replacement push bar and the covers.

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Page 20

Service Information

ADJUSTABLE PUSH BAR REPLACEMENT

Required Tools:

(2) 9/16” Wrenches

(2) 1/8” Hex Allen Wrenches

3/32” Hex Allen Wrench

Replacement Procedure:

1. Apply the brakes, raise the litter to full height and raise the Fowler to 90
.

2. Use the 3/32” hex Allen wrench to remove the button head cap screws from the small plastic covers at

the ends of the left side of the push bar. Remove the covers and set them aside.

3. Use the two 9/16” wrenches to remove the centerlock nut from the left side of the adjustable push bar.

4. Use the two 1/8” hex Allen wrenches to remove the button head fasteners from the sides of the red push

bar release handle (both the wrenches must be used together to remove the fasteners). It is O.K. to leave

one of the fasteners attached to the position locking pin for the push bar – only one of the fasteners must

be removed.

5. Support the push bar to keep it from swinging down, and use a 1/8” hex Allen wrench to push out and

remove the push bar position locking pin from the center of the red release knob.

6. While still supporting the push bar, slide the red release knob away from the Fowler as far as possible

and use a 1/8” hex Allen wrench to push out and remove the 3/8” push bar pivot pin and washers.

7. Remove the 3/8” hex head screw and washers from the left side pivot and pull straight back to remove

the adjustable push bar frame.

8. Replace the red release knob on the replacement push bar and slide it back as far as possible, making

sure that it is on the side with the through hole and slot – not the side with the two through holes.

9. Insert the compression spring into the end of the push bar on the same side as the red release knob.

10. Place a 1/8” hex Allen wrench through the slot in the top of the right side of the push bar and push back

to compress the spring. While the spring is compressed, insert the push bar lock pin through the slot in

the right side of the push bar. This will keep the spring compressed to make attaching the push bar pivots

easier.

11. Put the replacement push bar up into place and replace the dowel pin and washers on the right side pivot,

followed by the hex head bolt and washers on the left side pivot.

12. Position the adjustable push bar to the down position (90
to the Fowler) and allow the lock pin to hold

it in place.

13. While supporting the push bar to keep it from swinging down, remove the push bar lock pin.

14. Push the red release knob up and into place ensuring the release label is on the outside of the unit.

15. Use one hand to compress the spring back and out of the way and use the other hand to insert the push

bar lock pin through the hole in the side of the red release knob and through the slot in the push bar until

it is flush with the other side of the red release knob.

16. Release the compression spring and allow the push bar lock to drop into place.

17. Replace the centerlock nut on the left side pivot and, using two 9/16” wrenches, tighten the nut down so

that it still allows free movement of the push bar.

18. Apply Loctite 222 to the button head fasteners for the push bar lock pin and tighten them fully using the

two 1/8” hex Allen wrenches.

19. Ensure the push bar rotates freely when released and locks securely in both the upright and down positions.

20. Replace the plastic covers and button head fasteners on the left side of the push bar and tighten using

the 3/32” hex Allen wrench.

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Page 21

Service Information

PNEUMATIC FOWLER ADJUSTMENT

Required Tools:

3/32” Hex Allen Wrench

3/8” Box End Wrench

5/8” Box End Wrench

5/16” Hex Allen Wrench

Adjustment Procedure:

1. Refer to drawing 5050–33–1 (page 46 & 47) for part reference.

2. Apply the Stretcher Chair brakes. For easier access, move Fowler to 70
or higher.

3. Remove the push bar (see page 17 or 16).

4. Using a 3/32” hex Allen wrench and a 3/8” box end wrench, remove the fasteners (item A), nuts (item

S) and spacers (item AF) holding the Fowler covers (items AN & AP) located on the under side of the

fiberesin. Remove the left and right Fowler covers and set aside.

5. Using a 3/32” hex Allen wrench, remove set screws (item Z), located in center of yokes (item AM).

6. Using a 5/8” box end wrench and a 5/16” hex Allen wrench, remove the pivot bolts (item E), flat washers

(item L) and hex nuts (item W) holding the gas cylinders (item AK) to the litter frame.

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Page 22

Service Information

PNEUMATIC FOWLER ADJUSTMENT (CONTINUED)

7. To adjust the Fowler, turn the gas spring 1 to 2 turns counterclockwise if the Fowler will not move and

1 to 2 turns clockwise if the Fowler will not hold its position.

8. Replace the pivot bolts (item E) and check the Fowler adjustment. Lower the Fowler approximately 10

to 20
, release the handle and apply weight to the Fowler to assure it will hold its position. If the Fowler

will not lower or will not hold its position when weight is applied, repeat step 7.

9. When the Fowler is properly adjusted, replace the washers and hex nuts to secure the pivot bolts.

10. Using thread Loctite, reinstall set screws (item Z).

11. Replace the left and right Fowler covers (items AN & AP) and reinstall the cover fasteners (item A), nuts

(item S) and spacers (item AF).

12. Reinstall the push bar assembly following the replacement procedure on page 17 or 16.

INDEPENDENT LEG SECTION CYLINDER ADJUSTMENT

Required Tools:

3/32” Hex Allen Wrench

5/8” Box End Wrench

5/16” Hex Allen Wrench

Adjustment Procedure:

1. Set the brakes, raise litter to full height, put stretcher chair in flat position and put unit in slight Trendelenburg (head down) for access to the cylinder.

2. Refer to drawing 5050–37–1 on pages 54–57 for part reference.

3. Be sure the independent leg section handles are pointed toward the head end of the stretcher chair.

4. Using a 3/32” hex Allen wrench, remove the set screw (item AC), located in the center of the yoke (item

S).

5. Using a 5/16” hex Allen wrench and a 5/8” box end wrench, remove the pivot bolts (item AT), washer (item

F) and nut (Item AB) holding the cylinder to the leg section frame.

6. To adjust the Fowler, turn the gas spring 1 to 2 turns counterclockwise if the leg section will not move when

actuated and 1 to 2 turns clockwise if the leg section will not hold its position.

7. Replace the pivot bolt (item AT) and check the leg section actuation. Rotate the handles on the leg section

toward the foot end of the stretcher chair and pull outward to move the leg section. When the handle is

released, the leg section should hold its position. If the leg section will not move or does not hold its position, repeat step 6.

8. When the leg section is properly adjusted, replace the washer (item F) and the hex nut (item AB) to secure

the pivot bolt.

9. Using thread Loctite, reinstall the set screw (item AC).

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Page 23

Service Information

INDEPENDENT LEG LOCKING LINKAGE ADJUSTMENT

Required Tools:

(2) 7/16” Wrenches

1/4” Nut Driver Or Wrench

Needle–Nosed Pliers

Regular Pliers

Adjustment Procedure:

1. Raise litter to full height, put it into dependent mode, put the Fowler all the way down, and set the brakes.

2. Refer to drawings 5050–37–1 on pages 54–57 and 5050–30–9 on page 62 for part reference.

3. Use the 1/4” nut driver to remove the self–tapping screws (item AH on page 56) securing the plastic linkage cover (item BH on page 56) and remove the cover.

4. Ensure the chair is in dependent mode (the red handles on the leg section should be pointing to the head

end of the unit).

5. Using two 7/16” wrenches, loosen the cable retainer (item K on page 62) and the hex nut (item E) to allow

the cable (item CL or CT, for right or left, on page 54) to move freely.

6. Using the needle–nosed pliers, remove the extension spring (item J on page 62) and be sure the lock

weldment rotates freely.

7. If the lock weldment does not move freely, use the two 7/16” wrenches to loosen the bolt (item A on page

62) and the hex nut (item D) until it does.

8. Reconnect the extension spring.

9. Using the pliers, grasp the end of the cable and pull firmly to remove any slack.

10. Using the two 7/16” wrenches, retighten the cable and the hex nut.

11. Rotate the leg section handles to the foot end of the unit, putting it into the independent mode. Actuate

one of the handles and move the foot section down about 20
.

12. Using the two 7/16” wrenches, very slightly loosen the cable retainer and the hex nut around the cable.

13. Tap the lock weldment softly with a wrench and move it downward until the lock pin is 1/16” or less above

the surface of the inner lock tube (item L on page 62).

14. Carefully retighten the cable retainer and hex nut .

15. Rotate the leg section back toward the head end of the unit (dependent mode) and raise the leg section

so that the locking linkages latch in place.

16. While looking at the locking linkage, move the handle from dependent to independent positions and ensure that in dependent mode, the lock pin securely bottoms out into the inner lock tube and that in independent mode, the lock pin is pulled up clear of the inner lock tube.

17. If the lock pin does not fully seat into the inner lock tube in dependent mode or if the lock pin is not pulled

clear of the lock tube in independent mode, repeat steps 4 & 5 and steps 9–14.

18. Ensure the inner and outer lock tubes move smoothly with each other and grease the inner lock tube if

necessary.

19. Replace the linkage cover and the hex head cap screws.

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Page 24

Service Information

INDEPENDENT LEG SECTION LOCKING LINK REPLACEMENT

Replacement part numbers:

Locking link – 5050–30–9

Required Tools:

3/16” Hex Allen Wrench

(2) 7/16” Wrenches

5/64” Hex Allen Wrench

(2) 9/16” Wrenches

1/2” Wrench

1/4” Nut Driver

Replacement Procedure:

1. Refer to drawings 5050–32–1 on page 58–61, 5050–33–1 on page 46 & 47 and 5050–30–9 on page 62,

for part reference.

2. Raise litter to full height, set brakes and place unit in dependent mode with the Fowler all the way down.

3. Using a 1/4” nut driver, remove the self–tapping screws (item AH on page 60) securing the plastic linkage

cover (item BH on page 60) and remove the plastic cover.

4. Using a 5/64” hex Allen wrench, remove the set screw (item F on page 62) from the outer tube weldment.

5. Using two 7/16” wrenches, loosen the cable retainer (item K on page 62) and the hex nut (item E on page

62) and pull the cable and cover free from the locking linkage.

6. Using two 9/16” wrenches, remove the hex head bolt (item DL on page 59), washers (item M on page

59) and the hex nut (item Y on page 59) at the foot end of the locking linkage. Let the linkage swing down.

7. Using a 3/16” hex Allen wrench and a 1/2” wrench, remove the button head fastener (item C on page 46),

the washers (item M on page 46) and the hex nut (item R on page 46) at the head end of the locking

linkage. The entire linkage should come off easily.

8. Starting at the head end of the unit, install the replacement locking linkage being sure that the orientation

of the linkage is correct (refer to drawing 5050–32–1 page 59). The cable mount side of the locking linkage should be on the inside of the stretcher chair and the extension spring should be toward the bottom

of the linkage.

9. Ensure the lock pin is seated in the inner lock tube before installing.

10. Reverse steps 6 & 7 to install the fastener, washers and hex nut for the head and foot end of the locking

linkage.

11. Insert the cable and cover into the cable stop on the top of the outer tube weldment (item M on page 62)

and feed the cable through the cable stop and through the hole in the cable retainer (item K on page 62)

being sure it passes between the two washers (item B on page 62) on top of the cable retainer. The washers clamp down and secure the cable.

12. Apply Loctite 242 to the end of the 8/32 set screw (item F on page 62) and install the screw into the cable

stop on top of the outer tube weldment (item L).

13. After completing this replacement procedure, please follow the adjustment procedure for the locking linkage on page 20.

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Page 25

Service Information

INDEPENDENT LEG SECTION CABLE REPLACEMENT

Required Tools:

5/64” Hex Allen Wrench

(2) 7/16” Wrenches

5/16” Hex Allen Wrench

1/4” Nut Driver

5/8” Box End Wrench

Replacement Procedure:

1. Refer to drawings 5050–32–1 on page 58–61, and 5050–30–9 on page 62 for part references.

2. Raise litter to full height, apply brakes, put unit into dependent mode and lower Fowler completely.

3. Put the unit into independent mode. Be sure that the red handles on the leg section are pointing toward

the head end of the stretcher chair.

WARNING

Failing to put the Stretcher Chair into the proper modes as described below could result in the foot cylinder

springing free, causing damage to the unit or personal injury.

4. Using a 5/16” hex Allen wrench and a 5/8” box end wrench, remove the bolt (item AT on page 59), washer

(item F) and hex nut (item AB) holding the foot cylinder to the frame.

5. Use the 1/4” nut driver to remove the hex head tap screws (item AH on page 60) securing the foot section

cover (item BR on page 60) and the locking linkage covers (items BH & BJ). Set all covers aside.

6. Reconnect the foot cylinder to the frame and insert only the hex bolt (item AT on page 59).

7. Put the unit into dependent mode (leg section handles toward the head end).

8. Use the two 7/16” wrenches to loosen the cable retainer (item K on page 62) and the hex nut (item E)

on the locking linkage.

9. Remove the worn or damaged cable. Remove it from the cable cover by pulling the ball end of it at the

cable pivot (item CY on page 58).

10. Using the 5/64” hex Allen wrench, remove the set screws (item AF on page 58) on both ends of the cable

cover and remove the cable cover.

11. Install the replacement cable cover, inserting each end into the respective cable end stop (one on the

outer lock tube weldment and one on the leg section frame).

12. Reverse step 10 to install the set screws at the cable stops, applying Loctite to them first. Do not over

tighten. This can crush the cable cover and prevent proper cable movement.

13. Insert the replacement cable through the cable pivot on the leg section (item CY on page 58) being sure

to feed the cable into the large diameter side of the cable pivot.

14. Grease the end of the cable and continue to feed it through the cable end stop (item BW on page 58)

and through the entire cable cover until it comes out at the cable stop on the outer lock tube weldment.

15. Put the unit in the independent mode (leg section handles towards the foot end).

16. Remove the hex bolt holding the foot cylinder to the frame and replace the foot section cover.

17. Use the 1/4” nut driver to replace the hex head tap screws to secure the foot section cover to the frame.

18. Reverse step 4 to reconnect the hex bolt, washer and hex nut to secure the foot section cylinder to the

frame.

19. Connect and set the adjustment on the cable following the adjustment procedure outlined on page 20.

20. Replace the locking linkage cover and secure it using the 1/4” nut driver and the hex head tap screws.

22