Removal of a check-valve7.9
Unscrew the plug (21 mm open end spanner).
Remove:
the spring, •
Remove the compensator piston using a magnet to extract it from its •
bore.
Reassembly:
replace the plug o-ring,1.
reassemble parts in reverse order.2.
torque for the plug: 70 ± 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
NOTICE
Risk of infection when using magnetic tool
Clean parts to remove any attracted metal particle. f
Do not use magnet for reassembly. f
RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 29/30
Distribution element repair procedure