ELBOW-FLARED 5P3621 - Caterpillar

The hydraulic system for the power train supplies oil to the torque converter and the planetary transmission.Transmission Hydraulic System
Illustration 1 g02789598
299-7631 Schematic - CX28 (1) Solenoid valve (2) Clutch exhaust valve (3) Main relief valve (4) Torque converter bypass valve (5) Torque converter outlet relief valve (6) Filter bypass valve (7) Lube relief valve (8) Oil Cooler (9) Bypass filter sensor (10) Transmission oil filter (11) Pump (12) Magnetic screen (13) Oil sump temperature sensor (14) Transmission lubrication (15) Oil sump (16) Torque converter inlet relief valve (17) Torque converter with lock up clutch (18) Torque converter outlet temperature sensorThe transmission is controlled, cooled and lubricated by oil that is supplied from sump (15) of the planetary transmission by transmission oil pump (11) .Oil is taken from the sump of the planetary transmission by the transmission oil pump and oil is fed via transmission oil filter (10) to the following components:
Solenoid Valve (Torque Converter Lockup Clutch)
Solenoid Valves (Electronic Clutch Pressure Control)
Transmission Hydraulic Control Relief ValveTest points for oil pressure and an oil temperature sensor are incorporated in the hydraulic system.Control of the planetary transmission is achieved by electronically activated solenoid valves (1) that allow oil to fill the various clutches in the planetary transmission.The torque converter allows the power to be transmitted smoothly from the engine to the planetary transmission. The torque converter allows the speeds of the engine and the transmission to be matched smoothly. Once the speeds are matched, solenoid valve (1) for torque converter lockup clutch (17) engages torque converter lockup clutch (17) in the torque converter. The torque converter provides drive from the engine to the planetary transmission.Oil is fed to the torque converter and the oil transmits the drive from the engine to the planetary transmission. Outlet oil from the torque converter goes via torque converter outlet relief valve (5) to the oil cooler and forward as lubricant for transmission (14) .