REXROTH A4VG - Replacing the Low Pressure Relief Valve

22/40 Bosch Rexroth AG A4VG Series 40 | RE 92004-01-S031/08.2015
Valves
9. Tighten the high pressure relief valve with the tightening torque necessary for
the corresponding model:
Table 3: Tightening torques
Size
Required tightening
torque
up to 110 250 Nm
above 145 375 Nm
Check high pressure - see Chapter "10 Settings".
7.2 Seal/replace low pressure relief valve
This section describes how you seal/replace the low pressure relief valve.
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Fig. 12: Low pressure relief valve
1 Threaded plug with valve piston
2 O-ring
3 Spring disc
4 Shim
5 Pressure spring
6 Low pressure relief valve
7 Pump case