Malfunction and Remedies
Releasing the parking brake manually
8.11 Releasing the parking brake manually
Working on the spring-loaded actuators is dangerous and may only be performed by
people trained for this work and familiar with working on pre-stressed spring piles.
Sufficiently high pressure must be available in the pneumatic system to release the
parking brake. In an emergency, the parking brake may even be manually released if
there is insufficient pressure for the braking system. The spring-loaded actuator must
be deactivated manually.
This must be done only if the diesel engine and traction drive are functional and at
least partial braking power can be generated with the traction drive.
DANGER
Hazard to life due to the machine inadvertently rolling away.
– Before loosening the spring-loaded actuator secure the machine against rolling
away using all wedges.
– Any work on the vehicle brakes may only be performed by qualified personnel
who, due to their professional training, are familiar with the maintenance and
repair of compressed air brakes.
Deactivating the spring-loaded actuator:
DANGER
– Never park the vehicle unsecured with the spring-loaded actuator (1) released.
– Secure the vehicle against rolling away using sufficiently large wedges.
– Put in the driver's field of vision a distinctive sign with the inscription: "Danger!
Vehicle has no braking performance! The spring-loaded actuators are released".
– Secure the diesel engine against accidental start-up, keep the ignition key out of
reach of any third party!
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