SHAFT 45VQ/V 2213957 - Caterpillar

Illustration 1 g03433436
(1) Main control valve (2) Implement lockout solenoid (3) Tilt cylinder (4) Line relief (tilt cylinder) (5) Lift cylinder (6) Ride control activation valve (7) Ride control valve (8) Ride control accumulator (9) Relief valve (ride control) (10) Balancing cartridge (11) Lift and tilt pilot control (12) Auxiliary function pilot control (13) Piston pump (steering) (14) Piston pump (implement) (15) Relief valve (auxiliary function) (16) Auxiliary valve (17) Tank (hydraulic) (18) Breather (19) Return screen (20) Gear pump (fan) (21) Relief valve (load sense) (22) Check valve (load sense) (23) Optional Solenoid (quick couple) (24) Relief valve (margin pressure) (25) Optional Quick couple cylinder (26) Pressure reducing valve (27) Back pressure valve (28) Check valve (pressure reducing) (29) Manual valve (dead engine lower) (30) Pilot accumulatorokThe 950GC Wheel Loader hydraulic system is made up of three systems: Implement Hydraulic System, Brake and Fan Drive System, and Steering System. The implement hydraulic system is shown in Illustration 3.
Illustration 2 g03436797
All three systems, share common hydraulic tank (17) . The hydraulic tank is vented. The location for the hydraulic tank is behind the cab.
Illustration 3 g03436842
Location of the hydraulic tank sight gaugeImplement Hydraulic System
The implement hydraulic system contains the components that are listed in Illustration 1.
Illustration 4 g03700176
Illustration 5 g03436956
Lift cylinders (5) are mounted under lift arms in the front frame. Access to piston pump (14) is achieved by removing panels under the platform on the right side of the machine. Ride control valve (7) and ride control accumulators (8) are located below the articulation joint on the non-engine end frame. Ride control valve (7) is part of main control valve (1) .Pilot accumulator (30) is located between the towers on the right side of the machine. Manual valve (dead engine lower) (29) is used to lower the lift arms when the engine is dead. Manual valve (dead engine lower) (29) is located between the towers in front of the articulation joint. Gear pump (fan) (20) is located on the lower right side of the machine and supplies flow to the optional quick coupler.The implement hydraulic system features control valves that are pilot operated. The control valves are closed center valves. The control valves are parallel to each other. The system is load sensing with a variable displacement pump and the system has pressure compensation.Brake and Fan Drive System
The brake and fan drive system provides oil to the brake charging system and the fan drive. The brake and fan drive system also circulates the oil to the cooler in order to cool the oil in the hydraulic system. The brake and fan drive system also circulates oil through the hydraulic filter.For more information about the brake charging and the fan drive system, refer to Service Manual module, "Brake and Fan Drive System, Systems Operation Testing and Adjusting" for the machine.Steering System
The steering system steers the machine by changing the angle of the articulation of the machine.For more information about the specifications for the steering systems, refer to Service Manual module, "Hydraulic System Specifications"