Stryker Medical 2025 User manual

2025/2026 Critical Care Bed
MAINTENANCE MANUAL
For beds with serial numbers 9709035185 and above.
For Parts or Technical Assistance
1–800–327–0770
IMPORTANT
File in your
maintenance
records

Table of Contents
Introduction
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning/Caution/Note Definition 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Information
Static Discharge Precautions 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Hydraulic Fluid Level 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bleeding Air From The Hydraulic System 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Descent Rate Adjustment 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Assembly Replacement 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Cover Installation And Removal 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steer Caster Linkage Adjustment 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Adjustment 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Trend And Pump Pedal Switch Replacement 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cord Replacement 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Cord Replacement 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Potentiometer Replacement 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Potentiometer Calibration 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil And Wire Replacement 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Release Valve Replacement 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solenoid Release Valve Replacement 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Pump Cover Removal 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Pump And Motor Replacement 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Replacement 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Board Replacement 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift And Fowler Pot “Burn–In” Procedure 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Individual Load Cell Outputs 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Cell Replacement 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scale Calibration Procedure 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Board Replacement 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head Wall Interface Board Replacement 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siderail Switch Board Replacement 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Replacement 23, 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fowler Potentiometer Replacement 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fowler Cylinder Replacement 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board Hinge Removal 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board Module Replacement 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board Interface Plug Replacement 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Guide 28–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bed Circuit Boards 31–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head Wall Output Configuration 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
Replacement Parts and Kits 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Drawings and Parts Lists
Base Assembly 41–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Adjuster Assembly 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Cam Assembly 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Assembly 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Assembly 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Assembly 50–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump/Motor Assembly 54, 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rack and Pinion Assembly 56, 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fifth Wheel Assembly 58, 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steer Caster Assembly 60, 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
International Inlet Filter Assembly 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
110 Volt Outlet Option Assembly 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No 110 Volt Outlet Option Assembly 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litter Assembly 65–72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Box Assembly 73–79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bed Extender Assembly 80, 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head Wall Litter Options 82–87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Full–Length Siderail Assembly 88–90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split Siderail Assembly 91–93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siderail Control Option Assembly 94–105. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board Assembly 106–114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board Modules 115–118. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bed Labeling 119–124. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head Board Assembly 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pendant Assembly 126. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removable I.V. Pole Assembly 127. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Permanent I.V. Pole Assembly 128–131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upright Oxygen Bottle Holder 132. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defibrillator Tray Assembly 133. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fowler X–Ray Cassette Tray Assembly 134, 135. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bed Extender Mattress 136. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limited Warranty
Obtaining Parts and Service 137. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental Warranty Coverage 137. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Authorization 138. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freight Damage Claims 138. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction
3
INTRODUCTION
This manual is designed to assist you with the maintenance of the Model 2025/2026 Stryker Critical Care Bed.
Read it thoroughly before beginning any maintenance on the equipment.
SPECIFICATIONS
Maximum Weight Capacity 500 pounds (227 kilograms)
Weigh System Capacity (optional equipment) patients weighing up to 400 pounds or
patients weighing up to 181.5 kilograms
Weigh System Accuracy (optional equipment) 1% of total patient weight
Overall Bed Length/Width 91”x 40”(231 cm x 101 cm)
Patient Sleep Surface 84”x 35”(215 cm x 90 cm)
Minimum/Maximum Bed Height 22 1/2”to 35”(20 1/2”to 31”low height option) or
57 cm to 89 cm (52 cm to 79 cm low height option)
Knee Gatch Angle 0_to 35_
Back Angle 0_to 90_
Trendelenburg/Reverse Trendelenburg –12_to +12_(standard height)
–10_to +10_(low height option)
Electrical Requirements 115 VAC, 60 Hz, 6.0 Amps (without optional 115V outlet)
115 VAC, 60 HZ, 11.0 Amps (with optional 115V outlet)
or 230 VAC, 50/60 Hz, 4.0 Amps
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
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 bed. Push on the bed to ensure the
brakes are securely locked. Always engage the brakes unless the bed is being moved. Injury could result
if the bed moves while a patient is getting on or off the bed.

Preventative Maintenance
4
Hand wash all surfaces of the bed 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. (Ap-
propriate 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 rec-
ommended 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% 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.

Preventative Maintenance
5
MAINTENANCE CHECKLIST
All fasteners secure
Engage brake pedal and push on the bed to ensure all casters lock securely
Optional locking steer caster or Fifth Wheel engages and disengages properly
Siderails move, latch and stow properly
All functions on siderails working properly (including LED’s)
CPR release working properly
Foot prop intact and working properly
I.V. pole working properly
Optional Foley bag hooks intact
Optional chart rack intact and working properly
Optional CPR board not cracked or damaged and stores properly
No cracks or splits in head and foot boards
All functions on footboard working properly (including LED’s)
No rips or cracks in mattress cover
No hydraulic hoses worn, kinked, or leaking
No leaks at hydraulic connections
Power cord not frayed
No cables worn or pinched
All electrical connections tight
All grounds secure to the frame
Ground impedence not more than 100 milliohms
Current leakage not more than 100 microamps
Bed Serial No.
Completed By:_________________________________ Date:_____________

Preventative Maintenance
6
NOTE
To prevent a low battery condition when the bed is not plugged in, position the cord out switch at the head
end of the bed to the off position. The switch is identified by the label shown below. If the switch is not posi-
tioned as shown below and the bed power cord and pendant cord are unplugged, the life of the back–up bat-
tery will be significantly reduced.
If the power light (located on the foot board) is flashing, the Nurse Call battery needs to be replaced. The
battery is located on the patient’s left side at the head end of the bed. No tools are required to replace the
battery. Unplug the bed power cord from the wall socket and replace the battery.

Static Discharge Precautions
7
The electronic circuits in the 2025 are completely protected from static electricity damage only while the bed
is assembled. It is extremely important that all service personnel always use adequate static protection when
servicing the electronic systems of the 2025. Whenever you are touching wires, you should be using static
protection.
Static Protection Equipment
The necessary equipment for proper static protection is:
S1 static wrist strap; 3M part number 2214 or equivalent,
S1 grounding plug; 3M part number 61038 or equivalent,
S1 test lead with a banana plug on one end and an alligator clip on the other; Smith part number
N132B699 or equivalent.
Stryker has available the following equipment for proper static protection:
SComplete static protection system –part number 3000–000–753
S1 grounding plug –part number 3000–000–754
S1 static wrist strap –part number 3000–000–755
S1 test lead –part number 3000–000–756
CAUTION
All electronic service parts will be shipped in static shielding bags. Do not open the bags until you have com-
pleted steps 2 and 3 of the following procedure. Do not place unprotected circuit boards on the floor. All circuit
boards to be returned to Stryker Medical should be shipped in the static shielding bags the new boards were
shipped in.
Static Protection Procedure
1. Unplug the power cord from the wall receptacle.
2. Insert the grounding plug into a properly grounded hospital grade wall receptacle. Plug the banana plug
of the test lead into the receptacle on the grounding plug. Connect the alligator clip on the other end of
the test lead to a ground point on the bed.
3. Place the static control wrist strap on your wrist. Connect the alligator clip at the other end of the wrist strap
cord to a ground point on the bed.
BED
GROUNDING DIAGRAM

Maintenance Procedures –Base
8
CHECKING HYDRAULIC FLUID LEVEL
Required Tools:
3/16”Allen Wrench 3/4”Open End Wrench (2) Sawhorses (or equivalent)
Large Phillips Screwdriver Bungee Cords (or equivalent) Hydraulic Fluid
Procedure:
1. Raise the litter to the full up position.
2. Using a sawhorse or the equivalent, support the end of the litter needing service.
3. Using a 3/16”Allen wrench, remove the socket head cap screw from the litter support tube at the end of
the bed needing service.
4. Press down on the release pedal for the end of the bed you are working on and, at the same time, push
down on the jack actuator until it is fully down.
5. Using a #2 Phillips screwdriver, remove the three Phillips screws holding the base hood to the base frame.
6. If the bed is equipped with the 110V outlet option, remove the slotted screw holding the outlet cover. If
the bed does not have the 110V outlet option, remove the two slotted screws holding the cover plate.
7. Using bungee cords or the equivalent, lift and support the base hood high enough to access the fill plug
on the side of the jack.
8. Verify there are no hydraulic leaks. If there are, jack replacement will be necessary.
9. Using a 3/4”open end wrench, slowly turn the fill plug counterclockwise to allow excess system pressure
to vent. Remove the fill plug.
10. The hydraulic fluid should be visible at the bottom of the fill hole. If it is not, add Mobil AW–32 hydraulic
fluid (Stryker part number 1550–570–10) 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.
11. Replace the base hood and reattach the litter support tube.
BLEEDING AIR FROM THE HYDRAULIC SYSTEM
If the lift motion is jerky or sluggish when the ”BED UP”button is pressed or when the lift pedal is pumped,
and/or the litter does not hold when it is pushed down, there may be air in the hydraulic system. This may
have been caused when the bed was unloaded from the shipping carton if it was lifted out by the litter instead
of by the brake rings.
1. To bleed air from the hydraulic system, raise the litter to full up using the lift pedal and continue to pump
10–12 times after full up is reached.
2. Lower the bed using the foot release pedals. While continuing to hold the release pedals down, pump the
lift pedal an additional 10–12 times.
3. Repeat the procedure 2–3 times or until the bed motion is smooth and the pedal action is firm.

Maintenance Procedures –Base
9
JACK DESCENT RATE ADJUSTMENT
Required Tools:
Standard Screwdriver #2 Phillips Screwdriver Bungee Cords (or equivalent)
Adjustment Procedure:
1. Pump the litter up to full height.
2. Using a #2 Phillips screwdriver, remove the three Phillips screws holding the base hood to the base frame.
3. If the bed is equipped with the 110V outlet option, remove the slotted screw holding the outlet cover. If
the bed does not have the 110V outlet option, remove the two slotted screws holding the cover plate.
4. Use bungee cords or the equivalent to secure the hood up and out of the way.
5. The descent rate needle valve is located on the top of the base of the jack. Turning the needle valve clock-
wise, with a screwdriver, will decrease the rate of descent. Turning it counterclockwise will increase the
rate of descent.
6. Adjust the needle valve so the foot end of the stretcher descends slightly faster than the head end.
NOTE
The larger percentage of a patient’s weight is located in the torso area. Adjust descent rate accordingly.
7. 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 faster than the head. It is recommended
that the foot drop faster to avoid patient disorientation.
CASTER ASSEMBLY REPLACEMENT
Required Tools:
#2 Phillips Screwdriver Floor Jack 3/4”Wrench
Bungee Cords (or equivalent) 1”Wrench Torque Wrench (w/ Ft. Lbs. Adjust.)
Replacement Procedure:
1. Pump the litter up to full height.
2. Using a #2 Phillips screwdriver, remove the three Phillips screws holding the base hood to the base frame.
3. If the bed is equipped with the 110V outlet option, remove the slotted screw holding the outlet cover. If
the bed does not have the 110V outlet option, remove the two slotted screws holding the cover plate.
4. Use bungee cords or the equivalent to secure the hood up and out of the way.
5. Carefully remove the plastic wheel covers (see page 10).
6. Using a floor jack, lift the corner of the base frame approximately 4 inches off the floor.
7. While holding the cap screw with a 3/4”wrench, turn the lug nut with a 1”wrench to loosen the wheel as-
sembly from the base frame. Remove the wheel.
8. Install the new wheel assembly and tighten the nut to 60 –65 foot–pounds torque.
9. Lower the floor jack.
10. Install the plastic wheel covers onto the new wheel.
11. Remove the bungee cords supporting the base hood and secure the hood to the base frame.