CYLINDER GP-MULTIPURPOSE BUKT 4807402 - Caterpillar

Illustration 1 g02688620
(1) Hose from the outlet of the filter to the priority valve (2) Priority valve (3) Gear train of the pump drive (4) Hose from the priority valve to the hydraulic controls for the transmission (5) Hose for the lubrication of the pump drive gears (6) Hose from manifold on the transmission to the torque converter inlet (7) Torque converter inlet ratio valve (8) Lockup clutch solenoid (9) Impeller clutch solenoid valve (10) Torque converter (11) Hydraulic controls for the transmission (12) Hose from the outlet of the power train oil filter to the inlet of the manifold on the transmission (13) Torque converter lockup clutch (14) Torque converter impeller clutch (15) Torque converter outlet (16) Hose from outlet relief valve to the power train oil coolers (17) Power train oil filter (19) Hose from the transmission oil pump to the power train oil filter (20) Hose from transmission oil pump to the power train oil filter (21) Transmission oil cooler (22) Transmission oil pump (23) Suction hose for the transmission oil pump (24) Magnetic screens (25) Reservoir (26) Torque converter outlet relief valve (27) Hose from the transmission oil cooler to the transmission reservoir (28) Manifold The hydraulic system for the transmission contains a common reservoir. The reservoir is at the bottom of the output transfer gear case. The reservoir supplies oil for the operation of the torque converter and for the operation of the transmission. The reservoir also provides lubrication oil for the different components in the system.The transmission oil pump is fastened to the output side of the torque converter cover. Pump (22) pulls oil from the reservoir through magnetic screens (24) in order to supply oil to both sections of the pump. The front section of pump (22) sends oil to manifold (28) that is located on the transmission housing. Manifold (28) also receives oil from the transmission controls. The manifold delivers the combined flow to the torque converter through hose (6) . Torque converter inlet ratio valve (7) prevents torque converter inlet pressure from exceeding a maximum limit. A hose from the transmission control valve provides the oil in order to lubricate the gear train of pump drive (3) .The drive end section of oil pump (22) sends oil to transmission oil filter (17) . From filter (17) , oil flows to the inlet of priority valve (2) that is mounted on the torque converter. The priority valve maintains oil pressure to the clutch control for the torque converter during the fill for the transmission clutch. If the priority valve was not present, the engagement of the impeller clutch would be delayed. If there are any restrictions in the oil filters, a bypass valve in the filter housings allows the oil to flow around the filters.The clutch control for the torque converter consists of two solenoid valves. Lockup clutch solenoid valve (8) controls the flow of oil to lockup clutch (13) . Impeller clutch solenoid valve (9) controls the flow of