Stryker Gynnie OB-GYN 1061 User manual

Medical
For parts or technical
assistance call
800 327 0770 (option 2)
Gynnie OB-GYN Stretcher
Model 1061
®
Maintenance
Manual
Important
Information
File in your
maintenance
records

Table of Contents
Introduction
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning / Caution / Note Definition 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance
Checklist 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Information
Caster Replacement 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Cover Installation and Removal 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Cam Replacement 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Ring Replacement 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Adjustment 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Side Control Pedal Linkage Adjustment 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Side Control Brake/Steer Gear Replacement 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uni−Pedal Replacement 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Replacement 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Assembly Torque Specification 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Excess Air (Vacuum) from the Hydraulic System 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Hydraulic Fluid Level 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack Descent Rate Adjustment 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Valve Replacement 14, 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustable Pressure Compensated (P.C.) Valve Replacement 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Lubrication 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Fowler Adjustment 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Support Removal 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Support Pivot Assembly Removal 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pivot Teeth and Mount Teeth Replacement 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Support Slide Adjustment 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Reference Replacement Parts List 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Drawings And Parts Lists
Stretcher Assembly 21, 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly 23−26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Adjuster Assembly 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Cam Assembly 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uni−Lowering Pedal Assembly 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
Assembly Drawings And Parts Lists (Continued)
Jack Assembly 30−32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly with Steerlock Caster Option 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Assembly 34, 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Assembly with Fifth Wheel Option 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fifth Wheel Pivot Rod Assembly 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fifth Wheel Arm Assembly 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Labeling Assembly 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litter Assembly 40−43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Section Assembly 44, 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Support Pivot Assembly 46, 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Support Assembly 48, 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siderail−to−Litter Assembly 50, 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat/Fowler Assembly 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic Fowler to Assembly 53, 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Handles Assembly 55, 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I.V. Assembly 57−65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fowler X−Ray Cassette Assembly 66, 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upright Oxygen Bottle Holder Assembly 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board/Chartholder Assembly 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C−Spine Cassette Holder Assembly 70−71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Waste Basin Holder Assembly 72−74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calf Support Mounting Brackets 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calf Support Mount Assembly 76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calf Rest Assembly 77, 78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defibrillator Tray Assembly 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serving Tray Assembly 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foot Board/Serving Tray Holder 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O2 Bottle Retainer Assembly 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mattresses 83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty
Obtaining Parts and Service 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental Warranty Coverage 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Authorization 85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freight Damage Claims 85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Introduction
3
INTRODUCTION
This manual is designed to assist you with the maintenance of the Model 1061 OB/GYN Stretcher. Read it
thoroughly before using the equipment or beginning any maintenance on it.
SPECIFICATIONS
Maximum Weight Capacity 500 pounds
Overall Bed Length \ Width 81 1/2” \ 26 3/4”
Minimum \ Maximum Bed Height 22” \ 35”
Fowler Angle 0 to 90 °
Foot Section Angle 0 / 90 °
Trendelenburg \ Reverse Trendelenburg +18 to −18 °
Break−Away Point from Wall 64”
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.
WARNING
Patients should be discouraged from sitting directly on the ends of the stretcher. Excessive weight will cause
the litter surface to tip up, possibly causing patient injury.
Always apply the caster brakes when a patient is getting on or off the stretcher. Push on the stretcher to en-
sure the brakes are securely locked. Always engage the brakes unless the stretcher is being moved. Injury
could result if the stretcher moves while a patient is getting on or off the stretcher.
CAUTION
The hood may not be used for stepping.
The bottom of the brake rings should be cleaned regularly to prevent wax and/or floor remnant buildup.
NOTE
Clean hood storage area regularly.
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Preventive Maintenance
4
CHECKLIST
All fasteners secure (reference all assembly prints)
Siderails move and latch properly
Engage brake pedal and push on the stretcher to ensure all casters lock securely (page 9)
Steer function working properly
All casters secure and swivel properly
Body restraints working properly
I.V. pole intact and operating properly
Oxygen bottle holder intact and operating properly
Fowler operates and latches properly (page 18)
Knee Gatch operates properly
Trendelenburg/Reverse Trendelenburg operating properly
No rips or cracks in mattress cover
Ground chain intact
No leaks at hydraulic connections
Hydraulic jacks holding properly
Hydraulic drop rate set properly (page 13)
Hydraulic oil level sufficient (page 13)
Lubricate where required, including the brake adjuster assembly and brake cam (page 17)
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.
NOTE
References to the right or left side of the stretcher refer to the right and left sides of a patient
lying face up on the stretcher.
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Cleaning
5
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. (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. 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.
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Service Information
6
CASTER ASSEMBLY REPLACEMENT
1. Remove the old caster assembly.
2. Install the replacement caster and caster nut. Tighten the caster nut to 90−105 ft.−lb. with a torque
wrench.
NOTE
A new caster assembly with a 3M patch does not require the application of Loctite at assembly. However,
the patch is appropriate for only one installation. If the caster is removed and reassembled for any reason,
apply Loctite 242 to two or three threads of both the bolt and caster nut and tighten to 90−105 ft.−lb. with a
torque wrench.
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Service Information
7
CASTER COVER REMOVAL AND REPLACEMENT
Double Prongs
Single Prong
align cover with axle nut or bolt head, as shown.
Push down on the opposite side of the cover until
single prong engages with caster horn.
Push with palm on cover until
ProperlyAttached
Cover
To remove wheel cover, insert large screwdriver into cut−out in
side of wheel cover and into the space between the double prongs.
Pry up cover to disengage double prongs and push sharply upward
double prongs engage.
1.
2.
3.
Looking through the larger of the two side cut−outs,
Top View (Cut−Away)
Top View (Cut−Away)
Top View (Cut−Away)
to disengage single prong.
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Service Information
8
BRAKE CAM REPLACEMENT
Brake Cam Part Number 715−201−213
Required Tools:
Phillips Screwdriver String or Bungee Cord 3/32” Allen Wrench
1/8” Allen Wrench
Procedure:
1. Remove the four Phillips screws holding the base hood to the frame. Lift and support the base hood using
string or bungee cord.
2. Using a 3/32” Allen wrench, loosen the set screw holding the brake adjuster to the brake ring and turn
the adjuster clockwise to remove it.
3. Using a 1/8” Allen wrench, remove the shoulder bolt and nut holding the brake link on the cam and remove
the cam.
4. Reverse steps 3 and 4 to install the new cam. Verify the brakes are operating properly. If adjustment
is required, see page 9. Reinstall the base hood.
BRAKE RING REPLACEMENT
Brake Ring Part Number 715−1−61
Required Tools:
Phillips Screwdriver String or Bungee Cord Floor Jack, Small Crate (or equiv.)
Large Standard Screwdriver 3/32” Allen Wrench 11/16” Socket & Ratchet
5/8” Wrench Needle−Nose Pliers (2) 7/16” Wrenches
Procedure:
1. Remove the four Phillips screws holding the base hood to the frame. Lift and support the base hood using
string or bungee cord. Put the brake/steer pedal in the neutral position. Lift the end of the base needing
service until the casters are approximately 12” off the floor and support it with a jack or the equivalent.
2. Using a 3/32” Allen wrench, loosen the set screw holding the brake adjuster to the brake ring and turn
the adjuster clockwise to remove it.
3. Remove the caster covers on both casters (see page 7).
4. Remove one of the casters (see page 6). On the other caster, use an 11/16” socket and ratchet and
a 5/8” wrench to remove the nut and bolt holding the wheel on the caster horn and remove only the wheel.
5. Using needle−nose pliers, carefully squeeze and remove the spring between the brake cam and the
brake ring.
WARNING
The spring is tightly compressed. Use caution when removing it or personal injury could result.
6. If you are working on an end control base, remove the spring from the pump pedal.
7. Lower the brake ring and remove it from the base. Remove the brake pads and bushings and install them
on the new brake ring.
8. Reverse the above steps to install the new brake ring and reinstall the caster and wheel. Apply and re-
lease the brakes to verify they operate properly. If adjustment is required, see page 9. Reinstall the
base hood.
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Service Information
9
BRAKE ADJUSTMENT
Required Tools:
3/32” Hex Allen Wrench
Pry Bar
Thread ”Locktite”
Flat on thread of stud must always be
aligned with the set screw. Turn must
always be full circle only.
BASE SIDE CONTROL PEDAL LINKAGE ADJUSTMENT
Required Tools:
3/8” Wrench 5/32” Hex Allen Wrench 7/16” Wrench
Bungee Cords
Adjustment Procedure:
1. Place 150−200 pounds on the litter and pump the litter up to full height.
2. Lift the base hood, separating the hood from the base frame. Using the bungee cords, support the base
hood.
3. Using a 3/8” wrench and a 5/32” hex Allen wrench, loosen the appropriate pedal linkage adjustment nut
until the jack stops ”drifting”. Raise the litter to full up.
4. Tighten the pedal linkage adjustment nut until the jack begins to slowly descend.
5. Using a 7/16” wrench, back the pedal linkage adjustment nut out four full turns. Raise the litter to full up.
6. Loosen the pedal linkage adjustment nut and ensure no drift occurs. If the jack drifts, repeat procedure.
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Service Information
10
BASE SIDE CONTROL BRAKE/STEER GEAR REPLACEMENT
Required Tools:
Pliers String or Bungee Cord Floor Jack or Equivalent
1/8” Allen Wrench 5/32” Allen Wrench 3/8” Box End Wrench
(2) 9/16” Box End Wrenches 3/16” Punch 1/4” Punch
Hammer
Procedure:
1. Apply the stretcher brakes.
2. Pump the litter up to full height.
3. Lift and support the base hood using string or bungee cord.
4. Using pliers, remove the cotter pins from both jack pump pistons and the pump linkage.
5. Using the 9/16” box end wrenches, remove the two bearing plate bolts.
6. Remove the cotter pin on the side brake bar.
7. Remove the bearing plate and pull out the idler gear rod while holding onto the gear. Lift the gear out.
8. Slide the miter gear away from the rod spacer and remove the dowel pin.
9. Using the floor jack, raise the side of the base you are working on approximately four inches.
10. Rotate the brake bar so the pedals are upside down.
11. Using a 1/4” punch and a hammer, remove the groove pin from the side brake rod.
12. Using a 3/16” punch and hammer, remove the 3/16” groove pin from the pedal.
13. Using a 5/32” Allen wrench, remove the set screw from the collar inside the gear box.
14. Remove the brake rod while holding the gear on the rod.
15. Using a 1/8” Allen wrench and a 3/8” box end wrench, remove the nuts and bolts holding the brake link
to the rod.
16. Using a 5/32” Allen wrench, remove the set screw from the collar outside of the gear box.
17. Using a 1/4” punch, remove the roll pin from the cam and brake link collar.
18. Reverse the above steps to install the replacement gear.
19. Inspect each gear for wear. Lube with MPG−2 grease or the equivalent if necessary.
UNI−PEDAL REPLACEMENT
Required Tools:
Drill w/3/16” Drill Bit Floor Jack Pop Rivet Tool
Replacement Procedure:
1. Set the stretcher brake and pump the litter up fully.
2. Use the floor jack to raise the side of the base frame off the floor approximately four inches.
3. Using a drill with a 3/16” drill bit, drill out the rivets on the bottom of the pedal to be replaced.
4. Using a pop rivet tool and rivets, install the replacement pedal.
5. Lower the stretcher to the floor. Test the operation of the pedal before returning the stretcher to service.
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Service Information
11
JACK REPLACEMENT (WITHOUT COMPRESSION SPRING)
Required Tools:
3/8” Wrench 1/2” Socket 1/2” Wrench Needle−Nose Pliers
Replacement Procedure:
1. Apply stretcher brakes. Raise litter to full up. Raise Fowler to full up and raise siderails.
2. Use a 3/8” wrench to remove the bolt in the litter support tube above black bellows on both ends.
3. With the assistance of another person, lift off the stretcher litter and set it aside, taking care not to damage
the siderails, etc.
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 1/2” socket and 1/2” wrench, remove the four bolts, washers and nuts holding the jack support
straps to the base frame.
7. Using needle−nose pliers, remove the two cotter keys on the pump link and remove the pump link.
8. Using a 1/2” socket and a 1/2” wrench, remove the four bolts holding the jack base to the base frame
(using a 3” extension may be required). Remove the jack from the base frame.
9. Reverse steps 6−8 to install the replacement jack. Reinstall the base hood and the stretcher litter.
JACK REPLACEMENT (WITH COMPRESSION SPRING)
Required Tools:
3/8” Wrench Needle−Nose Pliers Straight Screwdriver
Spring Compression Tool
Replacement Procedure:
1. Apply stretcher brakes. Raise litter to full up. Raise Fowler to full up and raise siderails.
2. Use a 3/8” wrench to remove the bolt in the litter support tube above black bellows on both ends.
3. With the assistance of another person, lift off the stretcher litter and set it aside, taking care not to damage
the siderails, etc.
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 needle−nose pliers, pull cotter pin from pump cylinder.
7. Using a straight screwdriver and pump spring compression tool, compress the pump spring and pry the
pump link out of the pump cylinder.
CAUTION
Do not let the pump piston come out of the jack or damage may occur.
8. Remove and replace jack as described in the procedure above.
9. Replace pump spring and pump link using the straight screwdriver and the pump compression tool.
10. Reinstall the base hood and the stretcher litter.
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Service Information
12
JACK ASSEMBLY TORQUE SPECIFICATION
Jack Assembly with Threads Oiled
1. Jack Cap Assembly to Jack Actuator Cylinder 75 to 85 Foot Pounds
2. Jack Actuator Cylinder to Jack Base Assembly 55 to 65 Foot Pounds
Jack Base Assembly with Threads Oiled
1. Jack Pump Cylinder to Jack Base Machined 45 to 55 Foot Pounds
2. Jack Pin Housing to Jack Base Machined 35 to 45 Foot Pounds
3. Jack Base Plugs to Jack Base Machined 8 to 12 Foot Pounds
4. Jack Valve Plug to Jack Base Machined 8 to 12 Foot Pounds
5. Flow Control Valve to Jack Base Machined 16 to 20 Foot Pounds
REMOVING EXCESS AIR (VACUUM) FROM THE HYDRAULIC SYSTEM
Procedure:
1. Verify all hydraulic linkages are secure and operating properly (see the pedal linkage adjustment proce-
dure on page 9).
2. Using the pump pedal, actuate system several times. This will force the air through the system and the
jack should now pump up.
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Service Information
13
CHECKING HYDRAULIC FLUID LEVEL
Required Tools:
3/8 Open End Wrench 3/4 Open End Wrench
Procedure:
WARNING
To avoid personal injury or damage to the stretcher, 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 head and foot end jack support
tubes. Remove litter top and set aside.
2. Lift base hood off base frame and set aside.
3. Be sure there are no hydraulic leaks. If there are, jack replacement will be necessary.
4. Lower the jack to the full down position.
5. 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.
6. 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.
7. Replace the hood and the litter.
CONSTANT FLOW 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 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 lower the foot end 3−7 seconds faster than the head. It
is recommended to have the foot end lower faster to avoid patient disorientation.
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Service Information
14
HYDRAULIC VALVE REPLACEMENT
Required Tools:
3/8” Open End Wrench Stiff Wire (with bent, pointed end) Small Needle Nose Pliers
1/2” Diameter Rod Torque Wrench (with Ft. Lbs. adjust.)
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 PART NO. PART NAME
A 45−966 O−Ring
B 45−967 O−Ring
C 390−2−134 Conical Comp. Spring
D 715−1−301 Base Plug
E 715−1−309 Valve Plug
F 715−1−341 Poppet
H 715−100−325 Pump Replacement Ass’y
J 926−20−153 Check Valve
K 926−20−154 Seal
L 926−20−156 Seal
M 2025−700−26 Valve Assembly
N 5050−70−50 P.C. Valve
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Service Information
15
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 begin-
ning 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.
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Service Information
16
ADJUSTABLE PRESSURE COMPENSATED (P.C.) VALVE REPLACEMENT
P.C. Valve Part Number 5050−70−50
WARNING
To avoid personal injury or damage to the stretcher, always remove the litter and the base hood before begin-
ning 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 brakes. Raise the litter to full up. Raise the Fowler and the siderails.
2. Using a 3/8” wrench, 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 31 for part reference).
7. Check for any contaminants in the valve as well as in the jack base.
8. Install the replacement P.C. valve. Moisten the O−ring seal with hydraulic fluid to ensure a tight seal.
9. Tighten the valve manually and then an additional 1/8−1/4 turn with a 13/16” wrench. Do not over −tight-
en or damage may occur to the O−ring seal.
10. Pump up the jack to the maximum height and fully lower it to verify proper operation.
11. Check for any hydraulic fluid leaks before replacing the base hood and litter.
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Service Information
17
BASE LUBRICATION
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Service Information
18
PNEUMATIC FOWLER ADJUSTMENT
Required Tools:
5/32” Hex Allen Wrench 1/2” Open End Wrench
Adjustment Procedure:
1. For easier access, move Fowler to 75_or higher.
2. Using a 1/2” open end wrench, loosen the nuts in the actuator arms on the end of the trip bar.
3. To adjust the Fowler, use a 5/32” hex Allen wrench to turn the Allen screws 1 to 2 turns counter−
clockwise if the Fowler will not move or 1 to 2 turns clockwise if the Fowler will not hold its position.
4. Retighten the nuts. Be sure the Fowler will travel from flat to 90_and down again and will hold its position
when weight is applied before returning the stretcher to service.
FOOT SUPPORT REMOVAL
Required Tools:
Phillips Screwdriver
Procedure:
1. Remove the Phillips head screw, washer and plastic insert on the support.
2. Remove the support toward the foot end of the stretcher through the pivot assembly.
FOOT SUPPORT PIVOT ASSEMBLY REMOVAL
Required Tools:
7/16” Open End Wrench
Procedure:
1. Remove the two 7/16” Nylock nuts and two carriage bolts holding the pivot assembly to the litter.
2. Remove the two 1/2” Nylock nuts and the two Allen head bolts going through the foot end litter bracket.
Tap the Allen bolts in toward the center of the stretcher to allow access to the pivot assembly.
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Service Information
19
PIVOT TEETH AND MOUNT TEETH REPLACEMENT
Required Tools:
Phillips Screwdriver
Procedure:
1. Remove the foot support (see page 18).
2. Remove the foot support pivot assembly (see page 18).
3. Remove the pivot mount to gain access to the two pop rivets holding the pivot teeth plate.
4. Drill out the two pop rivets.
5. Install the replacement pivot teeth with two new rivets.
6. Remove the two Torx screws holding the mount teeth plate.
7. Install the replacement mount teeth.
8. Reassemble the pivot assembly and foot support.
FOOT SUPPORT SLIDE ADJUSTMENT
Required Tools:
3/16” Allen Wrench
Procedure:
Top/Bottom Adjustment
1. Remove the foot support pivot assembly (see page 18).
2. Insert the extension tube through the slide opening of the pivot assembly.
3. Using a 3/16” Allen wrench, install the set screws into the bosses on the pivot.
4. Alternately turn each set screw clockwise until the extension tube doesn’t slide.
5. Turn the assembly on end with the pivot assembly on top.
6. Alternately turn each set screw counterclockwise until the pivot assembly will slide down the extension
tube without any force being applied.
Side/Side Adjustment
1. Install four set screws in each side of the pivot.
2. Alternately turn each set screw clockwise until the extension tube is centered on the pivot assembly and
does not slide.
3. Turn the assembly on end with the pivot assembly on top.
4. Alternately turn each set screw counterclockwise until the pivot assembly will slide down the extension
tube without any force being applied.
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