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HYDRAULIC CIRCUIT
CASE TRAINING CENTER
AUGUST 2000
Pump engine running, controls neutral position
The two negative flow control pressure signals enter the pump in the orifice PZ1 and PZ2 and fully push the Nega-
tive flow control valve E to the left.
The B & B' pistons of the servo-pistons are connected with A & A' piston but the force is higher on B & B' pis-
ton (bigger area). The pumps deliver a small flow to insure the cooling of the hydraulic oil.
Note: the negative flow control pressure signal is slightly lower than the pump outlet pressure
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