LAMBORGHINI CHAMPION 120, Руководство по ремонту

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10-8
C. STEERING AND POWER SHIFT CONTROL CIRCUIT
FUNCTION
The steering and Power Shift control circuit sends oil under pressure to the services used to control the Power Shift trans-
mission and the steering.
This circuit also sends oil under pressure for lubrication of the primary shaft and the rear PTO.
OPERATION
The gear pump (1) draws in oil (through filter (2)) from the rear gearbox and sends it under pressure to the power steering (3)
via the resonators (4). The oil is then sent under pressure through the pressurised filter (5) to the Power Shift control valves (6),
the services control valve (7), the main clutch control valve (8) and the range gearbox control valve (9).
Excess oil is then sent to the rotating parts of the rear PTO (10) and the primary shaft (12).
The circuit also includes an oil-cooler bypass valve (13) (set to 15 bar (217.5 psi)) that prevents an excessive increase in the
lubrication circuit pressure on cold starting of the tractor and during operation in very cold climatic conditions.
1
2 3
4
5
6
7
8
10
11
12
13
9
D0001240
REAR GEARBOX FRONT GEARBOX
OPEN CENTRE