TM 5-3805-281-24-1
Theory of Operation
PILOT CONTROLLER OPERATION OF CONTROL VALVE
A
BUCKET
B
SECTION
PILOT
CONTROLLER
A
D
C
CONTROL
C VALVE
E PILOT OIL
FROM PILOT PUMP D
F RETURN OIL
9025
05
G PILOT OPERATION OF MAIN CONTROL VALVE
IT4395
10
valve pilot cap is routed through the pilot controller to
The pilot controllers (A) are connected to the control
the hydraulic oil tank.
valve (C) by pilot control hoses through the flow
regulator valve. When the pilot controller is actuated,
The pilot hoses for the propel pilot controller are not
pilot oil (E) from the pilot pump (D) is routed to the
connected to the flow regulator valve but are
control valve pilot cap. In this illustration, the bucket
connected directly to the control valve pilot caps.
section (B) is actuated. Return oil (F) from the control
TX,9025,GG2288
1925OCT961/1
