KIT-JOYSTICK 3579152 - Caterpillar

Illustration 1 g00368132
(1) Transmission lubrication hydraulic filter (2) Bypass switch (3) Transmission charging hydraulic filter (4) Oil sampling valve for the transmission oilTransmission charging hydraulic filter (3) is fastened to the right side of the main frame rail behind the front wheel.
Illustration 2 g00331996
Components of the transmission charging hydraulic filter (4) Bypass valve (5) Spring (6) Outlet passage (7) Base (8) Inlet passage (9) Element (10) HousingOil from the transmission section of the hydraulic tank flows to the transmission gear pump. The transmission charging section of the pump sends oil to transmission charging hydraulic filter (3) .Oil flows through inlet passage (8). The oil fills the space between the inside of housing (10) and element (9). During normal operation, the oil flows through element (9) and out outlet passage (6) to the transmission hydraulic control. Element (9) stops any debris that is in the oil.If filter element (9) becomes full of debris, the restriction to the flow of oil causes a pressure increase inside the filter. The pressure oil causes bypass valve (4) to move against the force of spring (5). Also, the bypass switch (2) will be activated and an alarm will be registered in the cab.The oil then flows past the open bypass valve and to the transmission hydraulic control. When the oil does not flow through the filter element, the debris in the oil will cause damage to other components in the transmission system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Use correct maintenance in order to make sure that element (9) does not become full of debris. If element (9) is full of debris, the flow of clean oil to the transmission system is stopped.