PUMP AS-LIFT 4W2775 - Caterpillar

Illustration 1 g03092326
(1) Hydraulic tank
(2) Implement hydraulic pumps ( right front, right rear, and left front pump)
(3) Implement oil cooling pump
(4) Tilt cylinders
(5) Pilot pump
(6) Pilot pressure control valve
(7) Main control valve
(8) Lift cylinders
(9) Pressure reducing valve
(10) Pilot On/Off valve
(11) Check valve Gp MANUAL LOWER
(12) Lift cylinder rod end relief valve right hand
(13) Lift Cylinder head end relief valve right-handlift cylinder
(14) Relief valves main
(15) Tilt cylinder head end relief valve right hand
(16) Tilt Cylinder rod end relief valve right hand
(17) Pilot control actuator raise
(18) Pilot control actuator rackback
(19) Pilot control actuator rackback
(20) Pilot control actuator lower
(21) Spool lift
(22) Spool tilt
(23) Spool tilt
(24) Spool lift
(25) Pilot control actuator raise
(26) Pilot control actuator dump
(27) Pilot control actuator dump
(28) Pilot control actuator raise
(29) Float valves
(30) Pressure sensor Implement
(31) Ride control valve
(32) Solenoid valve Gp
(33) Ride control accumulators
(34) Balancing valve Ride Control
(35) Pilot oil accumulator
(36) Tilt cylinder rod end relief valve right hand
(37) Tilt cylinder head end relief valve right hand
(38) Lift cylinder head end relief valve right hand
(39) Pilot pressure sensor
Illustration 2 g02972017
Component locations
Regeneration valve
Left and right pump control solenoids
(1) Hydraulic tank
(2) Implement hydraulic pumps
(3) Implement oil cooling pump
(4) Implement electronic control module
(5) Electrohydraulic control
(6) Lift linkage position sensor
(7) Tilt cylinder
(8) Tilt linkage position sensor
(9) Pilot pump
(10) Pilot relief valve
(11) Main control valve
(12) Lift cylinder The electrohydraulic system is electrically controlling the pilot operated system. The pilot system controls the functions of the main control valve. The pilot system consists of an electronic system and a hydraulic system.The electronic system is composed of the following components: Implement electronic control module (4), electrohydraulic control (5), lift linkage position sensor (6) and tilt linkage position sensor (8). Also, two components from main control valve (11) are part of the electronic system: pilot control valve solenoids and solenoid valve (hydraulic lockout). Electrohydraulic control (5) consists of the following components: lift control lever, tilt control lever, lift control position sensor, tilt control position sensor, detent coil (tiltback), detent coil (lower), detent coil (raise) and switch (hydraulic lockout).The pilot hydraulic system consists of pilot pump (9) and pilot relief valve (10). Also, two components from main control valve (11) are part of the pilot hydraulic system: pilot control actuators and solenoid valve (hydraulic lockout).The main hydraulic system consists of following components. Implement hydraulic pumps (2), main control valve (11), tilt cylinders (7) and lift cylinders (12).Implement hydraulic tank (1) is common to the pilot hydraulic system and to the main hydraulic system.