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BRAKE SWIVEL LOCK RING REPLACEMENT
English
Tools Required:
• 1/2" Socket
• 5/16" socket
• 3/8" Drive Ratchet
• 1/4" Ratchet
• Needle Nose Pliers
• Bungee Cords
• Small Bottle Jack
• 3/8" Drive Torque Wrench (ft-lb)
Procedure:
1 .
Pump the stretcher all the way up .
2 .
Raise both siderails to the up and latched position .
3 .
Using bungee cords, support the raised base hood .
4 .
Put the base brake/steer pedal in the neutral position .
5 .
Using a 1/2" socket, remove the two flange nuts (one on each side) that secure the timing link to the casters .
6 .
Using needle nose pliers, remove the rue clip, and then the clevis pin from the brake rod activator .
7 .
Apply the brakes by moving the brake/steer pedal to the brake position .
8 .
Remove the brake timing link assembly by equally pulling outward on the timing link assembly . Save the brake
timing link for reinstallation .
9 .
Using a small bottle jack, raise the stretcher up until the caster falls out of the frame socket . Discard the caster .
10 . Using a 5/16" socket, remove the two bolts that secure the brake swivel lock ring to the base frame and remove .
Discard the brake swivel lock ring .
11 . Using a 5/16" socket, install the new brake swivel lock ring .
Note: The brake swivel lock ring has two dowels that mate to the base frame when installing .
12 . Install the new caster assembly by carefully and slowly lowering the jack down until the caster is secured in the
base frame, and then remove the jack .
Note: Make sure that the arrow located at the top of the caster assembly fork stem points toward the foot end of the
unit . If the arrow does not point toward the foot end, damage could occur to the caster assembly .
13 . Reverse steps to reinstall . Torque the two flange nuts that secure the timing link assembly to the casters to 80 ±
20 ft-lb . Torque the two bolts that secure the brake swivel lock ring to the base frame to 50 ± 4 ft-lb .
Note: When installing the new brake timing link assembly be sure to reinstall the bushing which may have fallen off
during the removal of the old brake timing link assembly .
14 . Verify proper operation of the unit before returning it to service .
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Service Information
0747-009-006 REV J
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