Water Pump Circuit
RELIEF VALVE FOR WATER PUMP
1. Housing. 2. Adjustment screw for relief valve. 3.
Pump oil line.
The housing (1), with the relief valve, is under the
machine and is near the left side of the frame. Housing
(1) is on the oil outlet of the drive end section of the
elevator hydraulic pump. When the engine is running,
the oil from the drive end section of the pump goes
through housing (1) and through line (3) to the water
pump control valve. The oil from the cover end section
of the elevator hydraulic pump is in the circuit with the
relief valve when the elevator speed lever is in both the
HI and LOW position.
Turn adjustment screw (2) to change tie pressure
setting for the relief valve. Turn the screw clockwise to
increase or counterclockwise to decrease the pressure
setting of the relief valve.