Brake Does Not Engage
- Failed brake components
The brakes are engaged with spring force. Hydraulic pressure is required to disengage the brakes. If hydraulic pressure is lost the brakes fully engage due to the action of the spring force.
If the brakes are applied and the machine does not slow down or if the machine does not stop, follow this procedure.
- Check the brakes.
- Disassemble the brakes and check the following components of the brakes for failure:
- Brake housing
- Reaction plate
- Brake pistons
- Belleville springs
- Stationary ring gear
- Seals
- Splines
- Friction discs
- Brake plates
- Shuttle valve
- Replace any damaged components, if necessary.
- Calibrate the brakes.
Reference: Refer to Testing and Adjusting, "Calibration" in this manual.
Caterpillar Information System:
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