60/88
Hägglunds DUc Drive unit
| Commissioning
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
STEP 3
Unloaded pump at longer intervals
• Run for a period at no load condition until system is stable and control is
established.
•
Check fluid level in the tank.
•
Filling up the system with fluid may be needed as parts of the system has been
filled up.
• Check for unusual noises or vibrations.
•
Check that the specified pressure levels for charge pressure and control pressure
at the Drive Unit are maintained in accordance with the values stated on the
hydraulic diagram in the order specific Hägglunds DUc documentation. These
pressure levels are preset at the factory and normally not needed to readjust.
• Check for leakage points.
• Stop the electric motor and correct if any faults discovered on the points above.
• Check all connections, screws etc. and tighten if necessary.
•
Restart when finished.
STEP 4
Loaded hydraulic system
• The hydraulic system can be loaded when the hydraulic system functions works
satisfactorily in unloaded running condition.
• Gradually increase load until satisfactory operation is obtained.
•
It may be necessary at this point to make adjustments to flow, ramp rates, etc.
• Cycle the system until normal operating temperature is reached.
• If system will run with speed feedback, check and adjust feedback regulator
parameters.
Fig. 55: Direction of rotation
Inspection hole
DD00098820
