CHANNEL 6C1671 - Caterpillar

Illustration 2 g02968856
Hydraulic Schematic "FORWARD, LOW SPEED, PARKING BRAKE OFF"
(1) Propel pump
(2) Axle reverse solenoid
(3) Axle forward solenoid
(4) Loop manifold
(5) Drum reverse solenoid
(6) Drum forward solenoid
(7) Servo piston
(8) POR valve
(9) Axle reverse combination valve
(10) Sequence valve
(11) POR pressure resolvers
(12) Servo piston
(13) Drum reverse combination valve
(14) Flushing spool
(15) Axle brakes
(16) Axle speed sensor
(17) Axle motor
(18) Axle shift spool
(19) Flushing relief valve
(20) Servo piston
(21) Shift valve
(22) Axle rotating group
(23) Axle forward combination valve
(24) Charge relief valve
(25) Drum forward combination valve
(26) Drum rotating group
(27) Oil cooler
(28) Return manifold
(29) Relief valve
(30) Thermal bypass valve
(31) From vibratory motor
(32) Temperature sensor
(33) From fan motor
(34) From steering HMU
(35) Charge filter
(36) Flushing relief valve
(37) Flushing spool
(38) Servo piston
(39) Drum brake
(40) Speed sensor
(41) Drum motor
(42) Drum shift spool The above illustration shows the propel hydraulic system under the following conditions:
The parking brake switch is in the OFF position.
The propel mode is set to low.
The machine is traveling forward.Charge