DEUTZ-FAHR AGROTRON 106 MK3, Workshop Manual

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5.1.1 BOOST PUMP
FUNCTION
•
Rotary drive and torque is transmitted to the pump from the shaft and converted into hydraulic energy. The
pressurised oil flow from the boost pump is directed to the variable displacement pump and the transmission
lubrication circuit.
OPERATION
•
The boost pump (1) draws oil from the rear gearbox and directs it under pressure to the filter (2) and the variable
displacement pump (3).
•
The pressurised oil from the boost pump is also used for lubrication of the transmission (4).
•
The pressure generated by the boost pump is regulated by the pressure limiting valve (5) (setting: 5 bar (72.3 psi)) that
prevents excessive pressure from building in the lubrication circuit on cold-starting and during cold weather
conditions.
•
The pressure-boosting circuit also includes a low boost pressure sensor (6) (set to 5 bar) that detects clogging of the
filter (2) and alerts the operator by illuminating a warning light.
D0004820
1
2
3
4
5
6
57cc
45cc
HYDRAULIC SYSTEM BOOST PUMP