Service Information
12
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 14).
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 shafts 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.
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.
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