PIN 1172027 - Caterpillar

Illustration 1 g06127525
Main hydraulic system
(1) Tilt cylinder
(2) Regeneration valve
(3) Lift cylinders
(4) Switch (hydraulic lockout)
(5) Shuttle valve
(6) Pressure reducing valve
(7) Tilt linkage position sensor
(8) Lift linkage position sensor
(9) Main control valve (left)
(10) Float valve (left)
(11) Float valve (right)
(12) Main control valve (right)
(13) Cat Data Link
(14) Implement electronic control module (ECM)
(15) Hydraulic lockout valve
(16) Tilt lever position sensor
(17) Lift lever position sensor
(18) Implement pilot relief valve
(19) Implement pump (center)
(20) Pilot pump (Steering) (STIC)
(21) Implement pump (right)
(22) Hydraulic tank
Illustration 2 g06131208
Front of machine
(1) Tilt cylinder
(3) Lift cylinder
Illustration 3 g01439994
Illustration 4 g06131544
Main control valve (left)
(9) Main control valve (left) for the variable displacement piston pump (center)
(23) Relief valve for the variable displacement piston pump (center)
(25) Manifold
Illustration 5 g06131563
Main control valve (right)
(12) Main control valve for variable displacement piston pump (right)
(24) Relief valve for the variable displacement piston pump (right)
(25) ManifoldWhen the lift control lever is activated, oil from the implement control valve is directed to lift cylinders (3). When the tilt control lever is activated, oil from the main control valve is directed to tilt cylinder (1).The main control valve consists of implement control valves (9) and (12) and manifold (25) which separates the two implement control valves. The manifold has three separate passages: a hydraulic tank return line from both main control valves, a supply line from the center variable displacement piston pump to the left implement control valve and a supply line from the right variable displacement piston pump to the right implement control valve.The main control valve (left) (9) consists of the following components: shuttle valve , main pump relief valve, the head end line relief valves (lift circuit and tilt circuit), the rod end line relief valves (lift circuit and tilt circuit), the lift main control valve stem, the tilt main control valve stem, the pilot control actuators, solenoids (pilot control actuator), pressure reducing valve, and float valve.The main control valve (right) (12) consists of the following components: main pump relief valve , the head end line relief valve (tilt circuit), the rod end line relief valve (tilt circuit), the lift main control valve stem, the tilt main control valve stem, the pilot control actuators, and solenoids (pilot control actuator) float valve.The solenoid valve (hydraulic lockout) is on the manifold (25).
Illustration 6 g06131614
Pump compartment
(19) Implement pump (center)
(21) Implement pump (right)The pump compartment is located beneath the access doors in the platform behind the cab.The oil flow from the implement pump (center) (19) flows through the left side of the main control valve. The oil flow from the implement pump (right) (21) flows through the right side of the main control valve. The flow of oil will combine after the oil has passed through the main control valve.