Parking Brake Adjustment Driveline Park Brake
- Block the wheels.
- Apply the park brake perpendicular to the
actuating lever throughout its travel.
- The measured force should fall between 311-400 N·m
(70-90 lb).
- If measures force is above specification, do the following:
| 4.1. | Assure that the cable routing flows smoothly with no kinks. |
| 4.2. | Assure that the camshaft lever is free to rotate in the proper direction. |
| 4.3. | Check the cable to cable connection at the B.O.C. bracket. |
If threaded engagement into the hex fitting is greater than 14.0 mm (0.56 in)
reduce amount by 3.2 mm (0.125 in). DO NOT reduce engagement less than
14.0 mm (0.56 in).
- If measure force is below specification do the following:
| 5.1. | With the park brake lever disengaged, turn the handle adjustment knob
as needed. |
Adjustment knob should not be near the bottomed out position
in either direction.
| 5.2. | If handle effort can not be increased, adjust the tread up to 75 percent
engagement ay the B.O.C. bracket to allow for the correct adjustment at the handle. |
- If proper parking brake adjustment is not possible with these settings,
check all system components for correct part numbers and assembly.
Parking Brake Adjustment Wheel Park Brake
- Block the wheels.
- Fully apply the hand park brake or apply foot park brake lever to the 5th
notch position.
- Place a GE-47744 cable tension gage onto the front or intermediate
cable forward of the equalizer.
- Drive the adjustment nut until 450 lbs of tension is indicated
on the tension gage scale.
- Release the park brake.
- Fully apply the park brake 3 times to pre-stretch the cables.
- Fully release the park brake.
- Adjust the adjustment nut until there is no drag on the park brake system
but an adequate amount of tension on the cable.
- No drag on the rear brakes should be present.
- Apply the parking brake and verify it is engaged by trying to move the
vehicle.
- If proper parking brake adjustment is not possible with these settings,
check all system components for correct part numbers and assembly.
- Remove blocks from the wheels.
