HOUSING AS 8X4556 - Caterpillar

Illustration 1 g03874087
(1) Hose from the Outlet of the Filter to the Priority Valve
(2) Priority Valve
(3) Input Transfer Gear
(4) Hose from the Priority Valve to the Hydraulic Controls for the Transmission
(5) Hose for the Lubrication of the Input Transfer Gear
(6) Hose from Hydraulic Controls for 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 Torque Converter
(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
(18) Power Train Oil Filter
(19) Lubrication for the Bearings in the Output Transfer Gearbox
(20) Lubrication for the Gears in the Output Transfer Gearbox
(21) Hose for the Lubrication of the Output Transfer Gear
(22) Lubrication for the Transmission Planetary
(23) Pump Drive (Rear)
(24) Hose from the Transmission Oil Pump to the Power Train Oil Filter
(25) Hose from Transmission Oil Pump to the Power Train Oil Filter
(26) Transmission Oil Coolers
(27) Transmission Oil Pump
(28) Suction Hose for the Transmission Oil Pump
(29) Magnetic Screens
(30) Hose from the Transmission Oil Cooler to the Rear Pump Drive
(31) Reservoir
(32) Hose from the Transmission Oil Coolers to the Inlet for the Lubrication of the Transmission and Pump Drives
(33) Transmission
(34) Torque Convertor Group The hydraulic system for the transmission (33) contains a common reservoir (31). 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 rear of the torque converter cover. Pump (27) pulls oil from the reservoir through screens (29) in order to supply oil to both sections of the pump.The front section of pump (27) sends oil to power train oil filter (18). From oil filter (18), oil flows to a junction block on torque converter (10). A hose connects the junction block on the torque converter to transmission control valve (11). This hose connects the torque converter with inlet ratio valve (7). A hose from the transmission control valve provides the oil in order to lubricate input transfer gear (3).The drive end section of oil pump (27) sends oil to transmission oil filter (17). From filter (17), oil flows to the inlet of priority valve (2). 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