Stryker Atlas 660 User manual

IMPORTANT
File in your
maintenance
records
AtlasrTransport Stretcher
Model 660
MAINTENANCE MANUAL
For Parts or Technical Assistance
1−800−327−0770 (Option 2)

Table of Contents
Introduction
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning / Caution / Note Definition 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance
Checklist 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 5, 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Information
Caster Cover Installation and Removal 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Removal 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot End Release Pedal Replacement 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot End Release Pedal Rod Removal 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Base Brake Rod Removal 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Side Control Brake Rod Removal 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Release Pedal Adjustment 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Ring Removal 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Hubcap Removal 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Removal 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Carriage Removal 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Control Big Wheel Linkage Assembly Removal 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Cam Gas Spring Dampener Removal 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal of Excess Air from the Hydraulic System 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Descent Rate Adjustment 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot End Hydraulic Jack Removal 14, 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head End Hydraulic Jack Removal 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litter Top Removal 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Fowler Adjustment 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer Board Counterbalance Adjustment 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Reference Replacement Parts List 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Drawings and Parts Lists
Big Wheel Base Assembly 19−21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly with Standard Brakes (Big Wheel Base) 22, 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Assembly 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Link Assembly 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Rod Assembly 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly with Dual Side Hydraulics (Big Wheel Base) 27−29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
Assembly Drawings and Parts Lists (Continued)
Release Pedal Assembly 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Pedal Assembly 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly with Three Side Hydraulics (Fifth Wheel Base) 32,33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Release Pedal Assembly 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Pedal Assembly 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cam Bracket Assembly 36, 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Big Wheel Carriage Assembly 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Control Big Wheel Base Assembly 39−41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Control Big Wheel Carriage Assembly 42, 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Control Big Wheel Linkage Assembly 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Constant Descent Hydraulic Jacks 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Labeling Assembly 46, 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litter Assembly 48−50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siderail Assembly 51−57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Fowler Assembly 58, 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stationary Foot Section Assembly 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Knee Gatch Assembly 61, 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer System Assembly 63−66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steer Handle Assembly 67−69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removable I.V. Pole Assembly 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tethered I.V. Pole Assembly 71, 72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−Stage I.V. Assembly 73−75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3−Stage I.V. Assembly 76−78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defibrillator Tray Assembly 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Extension/Defibrillator Tray Assembly 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O2 Bottle Holder 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fowler X−Ray Cassette Assembly 82, 83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heel Stirrup Assembly 84−87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C−Spine Cassette Holder Assembly 88−90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O2 Bottle Retainer Assembly 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mattresses and Siderail Pads 92. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty
Obtaining Parts and Service 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Contract Coverage 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Authorization 94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freight Damage Claims 94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction
3
INTRODUCTION
This manual is designed to assist you with the maintenance of the Model 660 Atlas Stretcher. Read it thor-
oughly before using the equipment or beginning any maintenance on it.
SPECIFICATIONS
Maximum Weight Capacity 660 pounds
Overall Bed Length \ Width 83” \ 34.5”
Minimum \ Maximum Bed Height 21.5” \ 36”
Fowler Angle 0 to 90°
Knee Gatch Angle 0 to 30_
Trendelenburg \ Reverse Trendelenburg +18 to −18°
Stryker reserves the right to change specifications without notice.
WARNING / CAUTION / NOTE DEFINITION
The words WARNING, CAUTION and NOTE carry special meanings and should be carefully reviewed.
WARNING
Alerts the reader about a situation, which if not avoided, could result in death or serious injury. It may also
describe potential serious adverse reactions and safety hazards.
CAUTION
Alerts the reader of a potentially hazardous situation, which if not avoided, may result in minor or moderate
injury to the user or patient or damage to the equipment or other property. This includes special care neces-
sary for the safe and effective use of the device and the care necessary to avoid damage to a device that
may occur as a result of use or misuse.
NOTE
This provides special information to make maintenance easier or important instructions clearer.

Preventative Maintenance
4
CHECKLIST
All fasteners secure
Siderails move and latch properly
Engage brake pedal and push on the stretcher to ensure all casters lock securely
All casters secure and swiveling properly
Big Wheel adjusted properly
Lubricate Big Wheel roller and linkage
Fowler operating and latching properly
Knee Gatch operating properly
Trendelenburg/Reverse Trendelenburg operating properly
Ground chain intact
No leaks at hydraulic connections
Hydraulic jacks holding properly
Hydraulic drop rate set properly
Hydraulic oil level sufficient
Lubricate where required
Body restraints intact and working properly
I.V. pole intact and operating properly
Oxygen bottle holder intact
No rips or cracks in mattress cover
Accessories and mounting hardware in good condition and working properly
Serial No. ______________ ______________ ______________
______________ ______________ ______________
______________ ______________ ______________
______________ ______________ ______________
Completed By:_________________________________ Date:_____________
NOTE
Preventative maintenance should be performed at a minimum of annually. A preventative maintenance pro-
gram should be established for all Stryker Medical equipment. Preventative maintenance may need to be
performed more frequently based on the usage level of the product.

Preventative Maintenance
5
CLEANING
Model 660 stretchers are designed to be power−washable. The unit may show some signs of oxidation or
discoloration from continuous washing. However, no degradation of the stretcher’s performance characteris-
tics or functionality will occur due to power washing as long as the proper procedures are followed.
SFollow the cleaning solution manufacturer’s dilution recommendations exactly.
SRemove the mattress prior to washing the unit; do not wash the mattress with the stretcher.
SPosition the Fowler at 45_, place the unit in full reverse Trendelenburg (foot end down), raise the siderails,
and place the I.V. poles and push handles in the up position.
SStryker Medical recommends the standard hospital surgical cart washer for power washing Model 660
stretchers.
SDo not replace the mattress on the stretcher until the unit is completely dry.
SBefore returning the unit to service, verify all labels are intact, verify the brake/steer pedal locks properly
in both positions and check all components for proper lubrication.
DO NOT STEAM CLEAN THE UNIT. Use a maximum water temperature of 180_F/68_C. Maximum air dry
temperature (cart washers) is 240_F/115_C. Water pressure −1500 psi/130.5 bar. If a hand held wand is
being used to wash the unit, the pressure nozzle must be kept a minimum of 24 inches/.61m from the unit.
Stretchers must have maintenance performed after a minimum of every fifth washing. Refer to the mainte-
nance manual for specific lubrication instructions.
Failure to comply with these instructions may invalidate any/all warranties.

Preventative Maintenance
6
CLEANING (CONTINUED)
In general, when used in those concentrations recommended by the manufacturer, either phenolic type or
quaternary type disinfectants can be used. Iodophor type disinfectants are not recommended for use be-
cause staining may result. The following products have been tested and have been found not to have a harm-
ful effect 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% So-
dium 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 cor-
rosive 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.

Service Information
7
CASTER COVER INSTALLATION AND REMOVAL
Double Prongs
Single Prong
ProperlyAttached
Cover
1.
2.
3.
Top View (Cut−Away)
Top View (Cut−Away)
Top View (Cut−Away)
Looking through the larger of the two side cut−outs,
align the cover with the axle nut or bolt head, as shown.
Push down on the opposite side of the cover until the
single prong engages the caster horn.
Push on the cover with your palm until
the double prongs engage.
To remove the wheel cover, insert a large screwdriver into the cut−out
in the side of the wheel cover and into the space between the double
prongs. Pry up the cover to disengage the double prongs and push
sharply upward to disengage the single prong.
CASTER REMOVAL
Required Tools:
9/16”Open End Wrench
1. Remove the caster cover.
2. While keeping pressure on the caster bolt with your index finger, use a 9/16”open end wrench to remove
the nylock hex nut on top of the caster assembly.
3. Using the brake ring, lift up on the base assembly and pull the caster assembly down to remove it.
4. Reverse steps 1−3 to install the new caster.

Service Information
8
FOOT END RELEASE PEDAL REPLACEMENT
Required Tools:
Needle Nose Pliers
1. Apply the stretcher brakes.
2. Disconnect the release pedal return springs from the foot end release pedals.
3. Remove the rue ring cotters and the clevis pins connecting the foot end release pedals to the mounting
bracket.
4. Rotate the pedals upward.
5. Remove the rue ring cotters connecting the head end and foot end release rods to the foot end release
pedals and remove the pedals.
6. Reverse steps 2−5 to install the new pedals.
FOOT END RELEASE PEDAL ROD REMOVAL
Required Tools:
Needle Nose Pliers
1. Remove the foot end release pedal (see procedure above).
2. Remove the snap in nyliners holding the foot end pedal release rods in the pedal mounting bracket.
3. Unsnap the foot end pedal release rods from the white plastic release rod brackets.
4. Dislodge the side control release pedal swivels from the studs on the side control release pedal weld-
ments.
5. Remove the foot end pedal release rods.
6. Reverse steps 1−5 to reinstall the pedal rods.
BIG WHEEL BASE BRAKE ROD REMOVAL
Required Tools:
Hammer 7/32”Punch String or Bungee Cords
1. Pump the litter up to full height.
2. Lift the base hood and support it from the litter using string or bungee cords.
3. With the brake/steer pedal in the steer position, remove the clevis pin and rue ring cotter connecting the
brake rod to the brake rod drive link at each end of the stretcher.
4. Remove the two clevis pins and rue ring cotters connecting the brake rods to the drive arm at the center
of the base near the cam bracket assembly.
5. Pull on the butterfly “V”pedals to remove the brake rods from the base.
6. Reverse steps 1−5 to reinstall the brake rod.

Service Information
9
BIG WHEEL SIDE CONTROL BRAKE ROD REMOVAL
Required Tools:
Hammer 7/32”Punch Needle Nose Pliers String or Bungee Cords
1. Pump the litter up to full height.
2. Lift the base hood and support it from the litter using string or bungee cords.
3. Using a hammer and 7/32”punch, drive the groove pin out of the butterfly “V”pedal on the patient’s left
side and remove the pedal.
4. Using a hammer and 7/32”punch, drive out the groove pin connecting the side control link to the side
control brake rod.
5. Pull on the butterfly “V”pedal on the patient’s right side to remove the side control brake rod from the base.
6. Reverse steps 1−5 to reinstall the brake rod.
RELEASE PEDAL ADJUSTMENT
Required Tools:
None
1. Manually disengage the release pedal swivel from the release pedal assembly.
2. To increase the release rod engagement with the release valve, turn the release pedal swivel clockwise
on the threaded release rod.
3. To decrease the release rod engagement with the release valve, turn the release pedal swivel counter-
clockwise on the threaded release rod.
NOTE
If the pedal swivel assembly is threaded too far onto the release rod, the release valve will be partially acti-
vated and the jack will drift.

Service Information
10
BRAKE RING REMOVAL
Required Tools:
9/16”Socket w/Extension 3/8”Drive Ratchet Needle−Nose Pliers
String or Bungee Cords
1. Pump the litter up to full height.
2. Lift the base hood and support it from the litter using string or bungee cords.
3. Using needle−nose pliers, unhook the extension springs from the top of the base caster tubes.
4. Remove the plastic caster covers.
5. While putting pressure on the caster carriage bolt, use a 9/16”socket and a 3/8”drive ratchet to remove
the caster nut on both sides of the stretcher.
6. Remove the casters.
7. Remove the brake rod (see procedure).
8. Remove the cotter pin from the clevis pin in the center of the brake ring weldment.
9. Remove the cotter pin from the bearing pivot support.
10. Remove the 3/4”nylock hex nut from the bearing pivot support.
11. Remove the drive link assembly.
12. Pull the brake ring down and out away from the stretcher base frame.
13. Reverse steps 1−12 to reinstall the brake ring.

Service Information
11
BIG WHEEL HUBCAP REMOVAL
Required Tools:
Large Standard Screwdriver
1. Using a large standard screwdriver, pry evenly around the entire edge of the Big Wheel hubcap until it
pops off the mounting studs on the wheel.
CAUTION
Do not attempt to pull off the hubcap after prying up only one side. Damage to the slots on the hubcap or
the mounting studs on the wheel could result.
2. To reinstall the hubcap, place it on the wheel, aligning the slots in the hubcap with the mounting studs
on the wheel. Press down evenly on the edges of the hubcap until it snaps into place.

Service Information
12
BIG WHEEL REMOVAL
Required Tools:
Large Standard Screwdriver Small Standard Screwdriver String or Bungee Cords
1. Lift the base hood and separate the Velcro holding it to the base frame. Support the hood from the litter
using bungee cords so it is out of the way.
2. Using a large, standard screwdriver, pop off the big wheel cover.
3. Using a small, standard screwdriver, remove the spiral retaining ring from the groove on the Big Wheel
axle.
4. Remove the Big Wheel.
5. Reverse steps 1−4 to reinstall the Big Wheel.
BIG WHEEL CARRIAGE ASSEMBLY REMOVAL
Required Tools:
1/2”Socket 3/8”Drive Ratchet Needle−Nose Pliers
1. Remove the litter top from the stretcher (see page 16).
2. Lift the base hood off the base frame.
3. With the brake/steer pedal in the steer position, remove the clevis pin and rue ring cotter connecting the
brake rod to the brake rod drive link at each end of the stretcher.
4. Remove the two clevis pins and rue ring cotters connecting the brake rods to the drive arm at the center
of the base near the cam bracket assembly.
5. Pull the brake rods straight out away from the base.
6. Remove the four hex washer head screws holding the cam bracket assembly to the base frame and re-
move the cam bracket assembly.
NOTE
On a base with 4−sided brakes, remove the rue ring cotter and clevis pin connecting the side control big wheel
linkage assembly to the yoke weldment on the end control brake pad at the foot end of the stretcher.
7. Remove the two hex washer head screws holding the carriage weldment to the base frame and remove
the carriage assembly.
8. Reverse steps 1−7 to reinstall the carriage assembly.

Service Information
13
SIDE CONTROL BIG WHEEL LINKAGE ASSEMBLY REMOVAL
Required Tools:
1/4”Punch Hammer Needle−Nose Pliers
String or Bungee Cords
1. Pump the litter up to full height.
2. Lift the base hood and support it from the litter using string or bungee cords.
3. Using a hammer and 1/4”punch, drive out the slotted spring pin connecting the butterfly “V”pedal on the
patient’s right side to the side control wheel axle.
4. Remove the butterfly “V”pedal and set it aside.
5. Using the hammer and 1/4”punch, drive out the slotted spring pin holding the side control Big Wheel link-
age yoke weldment to the side control wheel axle.
6. Pull straight out on the patient’s left side butterfly “V”pedal and remove the side control wheel axle.
7. Using needle−nose pliers, remove the hair pin cotter and washer holding the toggle pivot plate to the side
control Big Wheel carriage assembly.
8. Remove the rue ring cotter and clevis pin connecting the side control Big Wheel linkage rod end link to
the end control brake rod.
9. Remove the side control Big Wheel linkage assembly and set it aside.
10. Reverse steps 1−9 to reinstall the linkage assembly.
BIG WHEEL CAM GAS SPRING DAMPENER REMOVAL
Required Tools:
1/2”Socket 3/8”Drive Ratchet Needle−Nose Pliers
1. Remove the litter top from the stretcher (see page 16).
2. Lift the base hood off the base frame.
3. Remove the two clevis pins and rue ring cotters connecting the brake rods to the drive arm at the center
of the base near the cam bracket assembly.
4. Pull the brake shafts straight out away from the base.
5. Remove the four hex washer head screws holding the cam bracket assembly to the base frame and re-
move the cam bracket assembly.
6. Remove the rue ring cotter from the dampener mounting pin and remove the pin.
7. Lift up on the (patient) left side of the cam bracket and remove the rue ring cotter holding the dampener
to the dampener arm and remove the dampener.
8. Reverse steps 1−7 to install the new dampener.

Service Information
14
REMOVAL OF EXCESS AIR (VACUUM) FROM THE HYDRAULIC SYSTEM
1. Verify all hydraulic linkages are secure and operating properly.
2. Using the pump pedal, actuate the system several times to force the air through the system. The jack
should now raise properly.
JACK DESCENT RATE ADJUSTMENT
Required Tools:
Screwdriver Bungee Cords (or equivalent)
Adjustment Procedure:
1. Pump the litter up to full height (see page 16).
2. Lift the base hood, separating the hood from the base frame. Support the hood from the litter using bun-
gee cords so it is out of the way.
3. The descent rate needle valve is located on the base of the jack. Turning the needle valve clockwise,
with a screwdriver, will decrease the rate of descent. Turning it counterclockwise will increase the rate
of descent.
NOTE
The larger percentage of a patient’s weight is located in the torso area. Adjust descent rate accordingly.
4. Remove the bungee cords supporting the base hood and secure the hood to the base frame.
NOTE
The jack descent rate is preset at the factory and adjustment is not recommended.
FOOT END HYDRAULIC JACK REMOVAL (BASE WITH DUAL CONTROLS)
Required Tools:
1/2”Socket 3/8”Drive Ratchet Pliers
1. Remove the litter top from the stretcher (see page 16).
2. Lift the base hood off the base frame.
3. Remove the two hex washer head screws and washers connecting the pump pedal link to the foot end
pump pedal assembly and pump connecting rod.
4. Remove the foot end release rod from the release valve on the jack assembly by dislodging the release
pedal swivel from the pins on the release pedal weldment.
5. Dislodge the jack pump piston from the pump connecting rod.
6. Remove the two hex washer head screws holding the reservoir clamp.
7. Remove the jack assembly.
8. Reverse steps 1−7 to install the new jack.
NOTE
The jack descent rate is preset at the factory and adjustment is not recommended.

Service Information
15
FOOT END HYDRAULIC JACK REMOVAL (BIG WHEEL BASE WITH 3−SIDED CONTROLS)
Required Tools:
1/2”Socket 3/8”Drive Ratchet Pliers
1. Remove the litter top from the stretcher (see page 16).
2. Lift the base hood off the base frame.
3. Remove the hair pin cotter and washer connecting the side control Big Wheel linkage toggle pivot plates
to the side control Big Wheel carriage weldment.
4. Remove the rue ring cotter and clevis pin connecting the side control Big Wheel rod end link to the yolk
weldment on the end control brake rod.
5. Remove the Big Wheel carriage assembly (see page 12).
6. Remove the two hex washer head screws and washers connecting the pump pedal link to the foot end
pump pedal assembly and pump connecting rod.
7. Remove the foot end pump pedal return spring.
8. Remove the cotter pin from the center of the foot end pump pedal assembly and slide out the pivot pin.
9. Slide the foot end pump pedal assembly up and over the foot end mounting bracket.
10. Remove the four hex washer head screws fastening the foot end mounting bracket to the base frame
and set the bracket aside.
11. Remove the foot end release rod from the release valve on the jack assembly by dislodging the release
pedal swivel from the pins on the release pedal weldment.
12. Dislodge the jack pump piston from the pump connecting rod.
13. Remove the two hex washer head screws holding the reservoir clamp.
14. Remove the jack assembly.
15. Reverse steps 1−11 to install the new jack.
NOTE
The jack descent rate is preset at the factory and adjustment is not recommended.

Service Information
16
HEAD END HYDRAULIC JACK REMOVAL
Required Tools: 1/2”Socket w/Extension 3/8”Drive Ratchet
1. Remove the litter top from the stretcher (see below).
2. Using a 1/2”socket with extension and a 3/8”drive ratchet, remove the two hex head screws holding the
jack base to the stretcher base frame.
3. Remove the two hex head screws holding the jack reservoir clamp to the base frame and remove the
clamps.
4. Lift straight up on the pump connecting rod and disconnect the pump piston from the connecting rod.
5. Disconnect the pump pedal swivel from the release pedal mounting plate.
6. Remove the head end release rod from the release valve assembly.
7. Using a 1/2”socket with extension and a 3/8”drive ratchet, remove the two hex head screws holding the
jack base to the stretcher base frame.
8. Lift out the jack assembly.
9. To reinstall the jack, install the bolts on the jack and reservoir clamp but do not tighten them fully.
10. Reinstall the pump connecting rod and release rod.
11. Depress the pump pedal fully (to the floor). This will properly locate the jack onto the base frame.
12. Tighten the bolts on the jack and reservoir clamp.
13. Pump up the litter and apply weight to verify the jacks hold and do not drift.
NOTE
The jack descent rate is preset at the factory and adjustment is not recommended.
LITTER TOP REMOVAL
Required Tools:
1/2”Socket w/Extension 3/8”Drive Ratchet Standard Screwdriver
1. Using the foot pedal, pump up the litter top to full height.
2. Remove the stretcher mattress
3. Remove the round, black hole plugs from the jack supports at each end of the litter to expose the jack
support tube truss head screws.
4. Using a 1/2”socket, and a 3/8”drive ratchet, remove the truss head screws holding the jack support tubes
to the jack shafts.
5. Thread a 7/16−20 fine thread bolt far enough into the top of the jack supports to separate the litter top
from the jack shaft.
6. With the assistance of another person, lift the litter straight up to remove it from the jack shafts and set
it aside.

Service Information
17
PNEUMATIC FOWLER ADJUSTMENT
Required Tools:
3/32 Hex Allen Wrench 1/2 Socket w/Ratchet 1/8 Hex Allen Wrench
Channel Lock Pliers 5/32 Hex Allen Wrench Towel or Cloth
7/16 Open End Wrench Thread ”Loctite”
Adjustment Procedure:
1. Refer to drawings 1711−31−10 & 1711−131−20 (Pneumatic Fowler Assembly,page 58 &59) for parts refer-
ence.
2. For easier access, move Fowler to 75 degrees or higher.
3. Using a 3/32”hex Allen wrench, remove set screws (K on page 59), located in center of yokes (Y on page
59).
4. Using a 9/16”box end wrench and 5/16”hex Allen wrench, remove the cap screws (A on page 58), flat
washers (C on page 58) and hex nuts (D on page 58) holding the gas cylinders (K on page 58) to the litter
frame.
5. To adjust the Fowler, turn the gas cylinder 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.
6. Replace the cap screws (A) 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 5.
7. When the Fowler is properly adjusted, replace the washers (C) and hex nuts (D) to secure the pivot bolts.
8. Using thread locktite, reinstall set screws (K).
TRANSFER BOARD COUNTERBALANCE ADJUSTMENT
Required Tools:
7/16 Open End Wrench
1. Raise the transfer board to the full up position.
2. Unhook the extension spring at the eye bolt.
3. Using a 7/16 open end wrench, loosen the jam nut at the eye bolt.
4. Adjust the eye bolt to the desired position.
5. Tighten the jam nut.
6. Hook the extension spring to the eye bolt.
7. Allow the transfer board to lower on its own.
8. Repeat steps 1−7 until the desired counterbalance is achieved.

Quick Reference Replacement Parts List
18
PART NAME PART NUMBER
Cam Replacement Kit, Big Wheel 1040−700−003. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board/Chartholder 0926−040−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Extension/Defibrillator Tray Assembly 1010−50−100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head/Foot Board Assembly (2) 0946−029−100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heel Stirrup Mounting Brackets 1001−055−019. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Jack, Constant Descent 0753−002−001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.V. Caddy 1050−001−100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, Standard, Removable 0390−025−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, Tethered 1001−117−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, 2−Stage Permanently Attached, Head End 1711−110−000. . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, 2−Stage Permanently Attached, Foot End 1711−112−000. . . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, 3−Stage Permanently Attached, Head End 1711−111−000. . . . . . . . . . . . . . . . . . . . . .
I.V. Pole, 3−Stage Permanently Attached, Foot End 1711−113−000. . . . . . . . . . . . . . . . . . . . . . .
Mattress, 4”Thick x 31”Wide, Enhanced Comfort 0660−030−004. . . . . . . . . . . . . . . . . . . . . . . . .
Mattress, 5”Thick x 31”Wide, Ultra Comfort 0660−040−005. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oxygen Bottle Holder, Upright 1020−030−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paint, Touch−Up, Gloss Black, Bottle w/Brush 7000−001−322. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paint, Touch−Up, Gloss Black, Spray Can 7000−001−319. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paint, Touch−Up, Gray, Bottle w/Brush 7000−001−320. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paint, Touch−Up, Gray, Spray Can 7000−001−317. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restraint Strap, Ankle 0946−043−100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restraint Strap, Chest 1010−058−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restraint Strap, Wrist 0946−044−100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restraint Strap, 2 Piece 0390−019−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serving/Instrument Tray 1052−129−010. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siderail Pads 1001−052−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steer Handles, Foot End 1211−151−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steer Handles, Head End 1711−151−000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Cover Replacement Kit (Big Wheel) 1210−301−656. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Cover Replacement Kit (Standard Caster) 1010−056−200. . . . . . . . . . . . . . . . . . . . . . . . .

Big Wheel End Control Base Assembly
19
HEAD END
Assembly part number 1040−015−105 (reference only)