Removal of a spool return via a spring 7.2
operation A2 Z1 or A2 G1
Tongue Z1 or fork G1 side
On the distribution element in question, unscrew the mounting screws on
the plate (4 mm socket wrench).
Remove:
mounting screws (L=8 mm) (tongue : 4 screws ; fork : 2 screws), •
the plate, •
the o-ring and the wiper ring. •
Reassembly:
replace the o-ring and the wiper ring,1.
CAUTION
POSITION THE LIP PART OF THE WIPER RING ON THE OUTSIDE.
reassemble parts in reverse order,2.
torque for mounting screws: 5 ± 10% N.m.3.
The control block does not need to be removed from the machine to
perform this operation.
DANGER
Oil pressure
Machine off:
place all of the machine’s actuators connected to the control block in f
neutral position,
release stored pressure by operating all the spools. f
NOTICE
Environment damages risk
Install a vacuum pump on the tank to limit oil leakage during this f
operation.
Collect possible leaks with a suitable receptacle. f
18/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011
Distribution element repair procedure
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