RADIATOR GP 4L2115 - Caterpillar

Illustration 1 g01046014
Case drain filterThe case drain filter receives case drain oil from the following components.
Travel motor
Stabilizer solenoid valves
Swing motor
Main hydraulic pump (drive pump and idler pump)
Fan motor
Boom cylinder (rod end ball valve)Case drain oil flow from the travel motor, the swing motor, the boom cylinder (rod end ball valve) and the stabilizer solenoid valves are combined at the swivel. The case drain oil flow from these components then flows to the case drain filter. The case drain oil from the main hydraulic pump and the fan motor also flows to the case drain filter. Return oil then flows from the case drain filter to the hydraulic tank.