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Bosch Rexroth AG, A4VG Series 32, RE 92003-01-B/12.2015
NOTICE! Draining the hydraulic circuit.
Risk of damage! While towing with the bypass function activated, the closed
hydraulic circuit drains itself. This can result in unintended functions when restarting
the travel drive.
▶ Start the travel drive only after completely filling and air bleeding the hydraulic
circuit (see chapter 8.1 “Initial commissioning” on page48).
To deactivate the bypass function:
1. Immediately following towing, switch off the bypass function.
2. Restore the function of the high-pressure relief valve. To do this, perform the
settings under the item “Activating the bypass function” in the reverse order:
Loosen the lock nut (2) with a hexagon head screw (WAF 13), then turn the
screw(1) counter-clockwise with a hexagon socket wrench (WAF 4) to the stop.
3. Retighten the lock nut (2), turning clockwise with a torque of 22 Nm
4. Equip the screw (2)with a tamper-proof cap again to protect the pressure relief
valve against unauthorized resetting.
5.3.2 Bypass function size 71, 90
1
1
2
1
Fig. 4: Activating the bypass function size 71 and 90
To activate the bypass function:
1. Switch off the combustion engine.
2. Remove the plastic tamper-proof cap(1) on the high-pressure relief valve with a
suitable tool (e.g. gripper).
3. Loosen the screw (2) by turning counter-clockwise two turns with a hexagon
socket wrench (WAF 5).
The plastic tamper-proof cap is destroyed when removing.
Deactivating the
bypass function
Activating the bypass
function
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