SK375-AT3
Driving
Truck
SPIERINGS MOBILE CRANES USER MANUAL V 0.0
4-55
Nov
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4.16.2.2.
Releasing the parking brake when towing with malfunctioning diesel engine
When an external compressor is connected, the parking brake can be released by using the
parking
brake lever
.
Mechanical releasing of the parking brake
When no external compressor is used, the parking brake can be mechanically released by taking away
the spring tension of all parking brake boosters.
To release the parking brake mechanically, the next steps must be carried out.
1. Turn the
hexagonal head screw A
fully out of the parking brake booster at the rear
) ;
2. Do this twice per axle (left and right) for axles 2 and 3.
The parking brake is released when the hexagonal head screw of all parking brake boosters are fully
turned out:
-
The indicator
status braking system
remains active.
CAUTION!
The parking brake may only mechanically be released if pneumatic release is
absolutely NOT possible;
The parking brake boosters must be put under spring tension again directly
after towing to prevent dangerous situations;
Before mechanically releasing the spring tension of the parking brake
boosters, block the wheels with wheel chocks to prevent unforeseen rolling of
the vehicle;
NEVER lie down in front or at the rear of the wheels during mechanically
releasing the spring tension of the parking brake boosters.
Picture 4-23