Stryker Medical 1009, Maintenance Manual

Page: 20 / 125

Service Information
19
BIG WHEEL/BEARING REPLACEMENT
Required Tools:
15/16” Wrench or Socket & Ratchet (2) Bungee Cords Torque Wrench
Small Standard Screwdriver
Procedure:
1.Apply the stretcher brakes.
2.Pump the litter up to full height.
3.Lift the base hood and support it from the litter frame using bungee cords.
4.Using a small standard screwdriver, remove the big wheel hub cap, being careful not to damage the outer
surface of the hub cap (see page 45 for part reference).
5.Using a 15/16” wrench or socket and ratchet, remove the nut holding the big wheel to the frame. Remove
the bearing and sleeve (see page 54 for part reference).
6.Install the replacement bearing and the sleeve onto the wheel bolt. Install the big wheel and outer bearing.
7.Install the nut and tighten it to 30 foot–pounds using a torque wrench.
8.Remove the bungee cords and reinstall the base hood.
9.Verify the brake and steer functions are working properly before returning the bed to service.
BIG WHEEL ADJUSTMENT
Required Tools:
9/16” Wrench (2) Bungee Cords Small Ruler or Tape Measure
Procedure:
1.Apply the stretcher brakes.
2.Pump the litter up to full height.
3.Lift the base hood and support it from the litter frame using bungee cords.
4.Using a 9/16” wrench, remove the two side bolts on the cam adjuster block (see page 45 for part reference).
5.Release the brakes and engage the big wheel.
6.Adjust the two top bolts on the adjuster block equal amounts so the foot end casters are raised off the floor
1/4”. Reinstall the two side bolts on the cam adjuster block after applying Loctite to both bolts.
7.Apply the stretcher brakes.
8.Remove the bungee cords and reinstall the base hood.
9.Verify the brake and steer functions are working properly before returning the bed to service.