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| Illustration 1 | g06193569 |
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(1) ECPC Valve for Clutch 1
(2) ECPC Valve for Clutch 2 (3) ECPC Valve for Clutch 3 (4) ECPC Valve for Clutch 4 (5) ECPC Valve for Clutch 5 (6) ECPC Valve for Clutch 6 (7) ECPC Valve for the Lock-up Clutch 7 (8) Transmission Hydraulic control manifold (9) Suction screen (10) Oil sump (12) Lubrication Relief Valve (13) Transmission lubrication circuit (13a) Output transfer gear (OTG) lubrication (13b) Flywheel Lubrication (13c) Planetary lubrication (14) Transmission Oil Cooler (15) Torque Converter Temperature Sensor (16) Torque converter (and Lock Up Clutch) (18) T/C inlet relief valve (19) Transmission oil pump (20) Transmission oil filter (21) Main relief valve | |
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| Illustration 2 | g03749070 |
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(9) Suction screen
(19) Oil pump (transmission) (22) Transmission manifold (23) Transmission manifold cover (24) Transmission oil outlet "TO FILTER" (25) Transmission oil inlet "FROM FILTER" (26) Transmission inlet oil flow from strainer to pump (27) Low-pressure oil outlet to the T/C inlet (28) Transmission input shaft from torque converter (29) High-pressure outlet to filter and ECPC Valves | |
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| Illustration 3 | g03749075 |
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Front and rear view of the transmission oil pump (27) Low-pressure oil outlet to the T/C inlet (29) High-pressure outlet to filter and ECPC Valves (30) Suction side for the low-pressure circuit (31) Suction side for the high-pressure circuit (32) Gear driven from impeller hub of the torque converter that turns pump gears (33) Relief valve in the high-pressure circuit | |
The transmission oil pump is located on the front of the transmission. The transmission oil pump is a two section gear pump. One section is a low-pressure section supplying oil to the torque converter. The other section is a high-pressure section supplying oil through the oil filter to the following components:
- ECPC Valves (1) through (7)
- Main relief valve (21)
As stated above, the oil pump in mounted on the front of the transmission. The pump is driven by the impeller hub on the torque converter. Since the impeller turns with the engine and flywheel, the oil pump will turn with the engine. When the engine is running, oil is drawn through suction screen (9), through the center manifold, and into both suction ports in the pump. The oil flows around the outside of the pump gears into port (27) and port (29). Relief valve (33) limits the pressure in the high-pressure circuit and protects the system during cold start ups.
High-pressure oil in port (29) exits the transmission through a hose to the transmission filter. Oil from the filter returns to the transmission and flows to the ECPC valves and the main relief. Excess oil from the main relief valve flows to the torque converter and torque converter inlet relief valve (21). Relief valve (21) limits the pressure of the oil entering the torque converter.