Page 512 - Foton Workshop Manual - Auman EST-M

DI - 458 Diagnosis - Mechanical fault diagnosis

Parking brake failure

Overview

Function of parking braking system
1. Park the vehicle reliably to prevent it from slipping.
2. When starting the vehicle on a slope, coordinate the clutch, throttle valve, etc to start smoothly.

3. When driving brake fails, temporarily use or assit the driving brake to perform emergency braking.
4. The parking braking system must ensure the vehicle park reliably and not slide at any time.
5. The parking braking system uses mechanical energy transmission device.

6. When the driving brake fails, use the parking braking system to drive the vehicle into a safe area or
the service station for inspection and service.
Precautions
1. Fix the wheels with triangle wood blocks or wedge which shall be placed very close to the front and
back of tyre. It is better to fix two rear wheels.

2. When working under the vehicle, the engine and ignition switch shall be off.
3. Ensure the cleanliness of parts and working area when performing maintenance for the braking
system.
4. Be careful when repairing the braking system, particularly when replacing the parts Otherwise, it
may impact the function of braking system and cause danger in driving.

5. After performing service for the braking system, check if it leaks.
Failure phenomenon list

Failure phenomenon Possible reason Failure elimination

1. Braking clearance not properly
Readjustment
Braking failed adjusted

2. Manual brake valve failure change

1. Manual braking valve leaks change
Braking bite 2. Brake chamber leaks Check, repair or replace

3. Quick release valve leakage change

1. Manual braking valve breaks change
Braking dragging
2. Brake chamber leaks Check, repair or replace

DI-458