TM 5-3805-281-24-1
Theory of Operation
HYDRAULIC PUMP REGULATOR SUMMATION AND SPEED SENSING OPERATION
27 PILOT OIL
FROM SOLENOID
28 REDUCED PILOT OIL
VALVE MANIFOLD
1
29 REAR PUMP SUPPLY OIL
30 FRONT PUMP SUPPLY OIL
31 CONTROL VALVE
CONTROL VALVE
NEUTRAL PASSAGE OIL
NEUTRAL PASSAGE 2
32 RETURN OR PRESSURE
FREE OIL
REAR PUMP 3
CONTROL
REMOTE
VALVE
CONTROL
TO SERVO
SPOOL
REMOTE
PISTON
CONTROL
LARGE END 4
5
7 PISTON
SLEEVE
26 PRESSURE
6
SENSOR
RETURN
TO PUMP
8 PILOT OIL
HOUSING 14
INLET
SPEED SENSE 13
9025
SIGNAL PORT
05
23
PUMP PRESSURE 12
INLET
9 LOAD SLEEVE
LOAD PISTON 11
15 FEEDBACK LINK
LOAD SPOOL 10
16 TO LEFT CONTROL VALVE
TO FRONT PUMP
TO RIGHT CONTROL VALVE 25
17 REGULATOR
FROM FRONT PUMP 24
REGULATOR
18
PILOT
PUMP
19
22
23
PILOT
20
FRONT
PRESSURE
SERVO
REAR
PUMP
REGULATING
PISTON
PUMP
21
VALVE
SERVO
PISTON
33 PUMP FLOW INCREASING
T114809
Continued on next page
CED,TX08227,3113
1930APR981/2
