COLLAR-IDLER END 9G8303 - Caterpillar

The hydraulic system for the power train supplies oil to the torque converter and the planetary transmission.Transmission Hydraulic System
Illustration 1 g01993353
Drawing 335-6627 Sheet 1 (1st and 2nd converter drive) (1) Filter bypass switch 435 kPa (63 psi) (2) Bypass valve (3) Torque converter inlet relief valve 1034 kPa (150 psi) (4) Modulating Valve (torque converter lock up clutch) (5) Pump 33.6 GPM @ 2000 rpm (6) Lube diverter valve (7) Cooler (8) Torque converter outlet relief valve 275 kPa (40 psi) (9) Lube (10) Sump (11) Transmission oil filter (12) ECPC valves (13) Torque converter (14) Torque converter lock-up clutch (15) Pump inlet screen (16) Transmission oil temperature sensor (17) Transmission hydraulic control relief valve (18) Torque converter flow diverter
Illustration 2 g01993354
Drawing 335-6227 Sheet 2 (2nd - 5th direct drive) (1) Filter bypass switch 435 kPa (63 psi) (2) Bypass valve (3) Torque converter inlet relief valve 1034 kPa (150 psi) (4) Modulating valve (torque converter lock up clutch) (5) Pump 33.6 GPM @ 2000 rpm (6) Lube diverter valve (7) Cooler (8) Torque converter outlet relief valve 275 kPa (40 psi) (9) Lube (10) Sump (11) Transmission oil filter (12) ECPC valves (13) Torque converter (14) Torque converter lock-up clutch (15) Pump inlet screen (16) Transmission oil temperature sensor (17) Transmission hydraulic control relief valve (18) Torque converter flow diverter
Illustration 3 g01993355
Drawing 335-6627 Sheet 3 (6th - 8th direct drive) (1) Filter bypass switch 435 kPa (63 psi) (2) Bypass valve (3) Torque converter inlet relief valve 1034 kPa (150 psi) (4) Modulating valve (torque converter lock up clutch) (5) Pump 33.6 GPM @ 2000 rpm (6) Lube diverter valve (7) Cooler (8) Torque converter outlet relief valve 275 kPa (40 psi) (9) Lube (10) Sump (11) Transmission oil filter (12) ECPC valves (13) Torque converter (14) Torque converter lock-up clutch (15) Pump inlet screen (16) Transmission oil temperature sensor (17) Transmission hydraulic control relief valve (18) Torque converter flow diverterThe transmission is controlled, cooled and lubricated by oil that is supplied from sump (10) of the planetary transmission by transmission oil pump (5) .Oil is taken from the sump of the planetary transmission by the transmission oil pump and oil is fed via transmission oil filter (11) to the following components:
Modulating Valve (Torque Converter Lockup Clutch)
Modulating 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 modulating valves (12) th