Repair of External Leakages
Fig. 16
depending on the case
d
epending on the case
Repair of External Leakages
22 Instructions on Design, Operation, Maintenance and Inspection
IV. Repair of external leakages
1 Valve insert (22) - Pressure relief valve
U
nscrew the valve insert (22) from the housing (Fig. 16) and remove O ring rests. If the
pressure does not conform to the specified value or if there is any leakage, replace the
complete valve insert (22).
Fit a new greased O ring (23) to the valve insert (22) and screw it in again.
Tightening torque: 30+10 Nm
2 Valve insert (32) - Replenishment valve
Unscrew the screw (30) and the valve insert (32).
Put the valve insert (32) into the housing bore. Remove o ring rests.
Fit a new greased O ring (31) to the screw (30) and screw it in again.
Tightening torque: 30+10 Nm
3 Screws (20 and 128)
Screw in new screws (20 and 128)
Tightening torque: 12+3 Nm
Setting the steering limitation - please refer to Chapter III., para. 5.
4 Collar nuts (21 and 129)
Screw in new collar nuts (21 and 129).
Tightening torque: 20+10 Nm
Setting the steering limitation - please refer to Chapter III., para. 5.
5 Screw plug (55)
Unscrew the screw plug (55), fit a new sealing ring (54) and screw it in again.
Tightening torque: 40 Nm (M16x1.5)
50 Nm (M18x1.5)
6 Bleeder (57)
Screw in a new bleeder (57).
Tightening torque: 30 Nm
Attention:
Apart from the work detailed above, no further repair work may be carried out. Any repair work
exceeding the extent described above has to be done by a ZF Service Centre.
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