HOSE AS 2856936 - Caterpillar

Illustration 1 g03606419
View of the front of the radiator. Some hoses were removed for clarity.
(1) Oil cooler
(2) Cooler bypass valve hose
(3) Cooler to tank return
(4) Cooler bypass valve
(5) Check valve
(6) Pressure Sensor
(7) Bypass return to tank hose
(8) Fan motor to cooler hose
(9) Bypass valve
Illustration 2 g03606436
(10) Gear motor hydraulic fan
(11) Makeup valve Oil from the gear motor (hydraulic fan) (10) enters the cooler system at hose (8). Oil flows from hose (3) through the return filter and into the hydraulic tank. Bypass valve (4) will open when the oil flow becomes too restrictive. Bypass valve (4) will direct oil around the cooler (1) through hose (2).Temperature sensor (6) sends a voltage signal to the engine Electronic Control Module (ECM). The engine ECM calculates the oil temperature by comparing the voltage signal to a predetermined set of values. If the oil is cool, the oil will be routed around the oil cooler (1). The oil will bypass the oil cooler until the oil gets up to temperature.Sensors
Illustration 3 g03634536
(12) Inlet air temperature sensor
Illustration 4 g03634579
View of the engine from the left side
(13) Coolant temperature sensor The engine coolant temperature sensor (13) sends a signal to the engine ECM in order to control the speed of the hydraulic fan.
Illustration 5 g03634583
(14) Fan speed solenoid The inlet air temperature sensor (12) sends a signal to the engine ECM in order to control the speed of the hydraulic fan. The fan speed solenoid (14) controls the displacement of the braking and the hydraulic fan pump. The fan speed solenoid (14) receives a signal from the engine ECM.