INSULATION 0388695 - Caterpillar

Illustration 1 g01095627
(1) Fan motor
(2) Axle oil cooler solenoid
(3) Check valve
(4) Axle oil cooler
(5) Screen (Rear axle)
(6) Screen (Front axle)
(7) Temperature Sensor
(8) Pump
(A) Caterpillar Monitoring System
(B) CAT Data Link
(C) Implement ECM
(AA) Suction Line
(BB) Discharge Line Both pumps (8) circulate the sump oil that is in each axle housing. The oil flows through passages in both the front and the rear axle housings. The oil from the front axle is pumped through screen (6) before the oil reaches cooler (4). Once the oil has passed cooler (4), the oil returns to the front axle. Inside the front axle, the oil cools the axle housing and the brakes. Oil from the rear axle flows past screen (5) and past cooler (4) before the oil returns to the rear axle. Inside the rear axle, the oil cools the axle housing and the brakes. When the temperature sensors in the axles reach 70 °C (158 °F), a signal is sent to Caterpillar Monitoring System (A). The signal will travel to CAT Data Link (B). The signal will continue to implement ECM (C). The implement ECM will then turn off solenoid valve (2) and the oil will be forced to operate fan motor (1) in order to cool the axle oil. When the temperature sensors in the axles cool to 60 °C (140 °F), a signal of 0.75 amp will be sent to solenoid valve (2). This will energize solenoid valve (2) and the oil will bypass fan motor (1). Two bypass relief valves are located in pump (8). Another bypass relief valve is located in fan motor (1). The bypass relief valve limits the amount of oil pressure in the cooling system. The bypass relief valves in pump (8) are rated at 1034 kPa (150 psi). The bypass relief valve in fan motor (1) is rated at 6900 kPa (1000 psi).Note: If one of the pumps becomes worn or damaged, replace the pump.
Illustration 2 g01099148
Right side view of the rear frame
(2) Axle Oil Cooler Solenoid
(9) Fan Pump
Illustration 3 g01099599
Rear End of Machine
(8) Oil pump for axles
(10) Hose to the oil cooler fan motor
(11) Hose to oil screen
(12) Supply hose to the front axle
(13) Supply hose to the rear axle
(14) Rear axle
(15) Return hose from rear axle
(16) Return hose from front axle
Illustration 4 g01099151
Front end of machine
(17) Front axle
(18) Supply hose from axle oil cooler
(19) Return hose to the gear pump The axle oil cooler is located on the left side of the machine under the cab. The cooling system for the axle oil consists of the following components: oil cooler fan motor (1), oil screens (5) and (6), pump for the axle oil (8), pump for the oil cooler fan (9), rear axle (14) and front axle (17).
Illustration 5 g01104044
Right side view of fan and motor
(1) Fan motor
(5) Oil screen (Rear axle)
(6) Oil screen (Front axle)
(10) Hose to the oil screen
(19) Supply hose to the fan motor
(20) Return hose from the fan motor
(18) Supply hose