BATTERY GP 4644951 - Caterpillar

Implement Hydraulic System
The implement hydraulic system controls the operation of the bulldozer. All of the pumps on this tractor are assembled in series. The first hydrostatic pump is mounted directly to the flywheel housing. The implement pump supplies oil to the hydraulic cylinders for the bulldozer blade. The fan pump provides oil flow for the on demand fan. The fan pump also provides charge pressure to the left hystat pump and additional pressure to the load sensing boost for the implement pump. The load sensing boost improves the cycle time of the implements.The tractor may be equipped with either a winch or a ripper. The implement hydraulic system also controls the operation of the ripper. If the tractor is equipped with a ripper the implement pump will supply oil to the ripper cylinder.
Illustration 1 g01355678
(1) Hydraulic oil tank (2) Lift cylinders (3) Engine (4) Tilt cylinder (5) Angle cylinders (6) Left hystat pump (7) Right hystat pump (8) Charge pump for the right hystat pump (9) Pump for the winch (if equipped) (10) Charge pump for the winch (if equipped) (11) Implement pump (12) Fan pump (13) Valve bank (14) Machine ECME/H Implement Subsystem Diagram
Illustration 2 g01356976
Implement Schematic
Illustration 3 g01356147
(1) Hydraulic oil tank (2) Lift cylinders (3) Engine (4) Tilt cylinder (5) Angle cylinders (6) Left hystat pump (7) Right hystat pump (8) Charge pump for the right hystat pump (9) Pump for the winch (if equipped) (10) Charge pump for the winch (if equipped) (11) Implement pump (12) Fan pump (A) Inlet manifold (B) Bulldozer lift control section (C) Bulldozer tilt control section (D) Bulldozer angle control section (E) Ripper lift control section (F) End cover (14) Load sensing relief valve (15) Blade lift control valve (16) Line relief and makeup valve (17) Flow compensator valve (18) Blade tilt control valve (19) Blade angle control valve (20) Ripper control valve (21) Ripper cylinder (22) Fan motor (23) Fan reversing valve (24) Pump compensator valve (25) Flow to the winch control valve (26) Flow to the "Y Port" of the winch pump. (27) Flow from the charge circuit of the left drive pump (28) Flow to the oil cooler (29) Flow to the charge circuit of the left drive pump (30) Back Pressure Valve (31) Load Sensing Boost (32) Pilot Shutoff Valve (33) Demand Fan Solenoid Valve (34) Reversing solenoid Valve (35) Valve (36) Crossover Relief Valve