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| Illustration 1 | g03663369 |
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824K-825K schematic shown 826K schematic is the same except the 826K does not have a clutch 4 (third speed) (1) Transmission oil pump (2) Transmission oil filter (3) Clutch solenoid modulating valve for the lock up torque converter (4) Clutch solenoid modulating valve for the Number 1 clutch (reverse) (5) Clutch solenoid modulating valve for the Number 2 clutch (forward) (6) Clutch solenoid modulating valve for the Number 3 clutch (fourth speed) (7) Clutch solenoid modulating valve for the Number 4 clutch (third speed) (8) Clutch solenoid modulating valve for the Number 5 clutch (second speed) (9) Clutch solenoid modulating valve for the Number 6 clutch (first speed) (10) Main Relief (11) Torque converter inlet relief valve (12) Torque converter outlet relief valve (13) Transmission oil cooler (14) Sump (15) Suction screen and magnet (16) Torque converter (17) Transmission Lubrication (18) Clutch 6 lubrication (19) Pump drive lubrication | |
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| Illustration 2 | g03663377 |
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824K-825K shown 826K is the same except the 826K does not have a clutch 4 (third speed) Refer to Illustration 3 (1) Transmission oil pump (3) Clutch solenoid modulating valve for the lock up torque converter (4) Clutch solenoid modulating valve for the Number 1 clutch (reverse) (5) Clutch solenoid modulating valve for the Number 2 clutch (forward) (6) Clutch solenoid modulating valve for the Number 3 clutch (fourth speed) (7) Clutch solenoid modulating valve for the Number 4 clutch (third speed) (8) Clutch solenoid modulating valve for the Number 5 clutch (second speed) (9) Clutch solenoid modulating valve for the Number 6 clutch (first speed) (10) Main Relief (12) Torque converter outlet relief valve (14) Sump (15) Suction screen and magnet | |
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| Illustration 3 | g03663429 |
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826K transmission control The 826K does not have a clutch 4 (Third gear) (4) Clutch solenoid modulating valve for the Number 1 clutch (reverse) (5) Clutch solenoid modulating valve for the Number 2 clutch (forward) (6) Clutch solenoid modulating valve for the Number 3 clutch (fourth speed) (8) Clutch solenoid modulating valve for the Number 5 clutch (second speed) (9) Clutch solenoid modulating valve for the Number 6 clutch (first speed) | |
Starting the Engine with the Transmission in the NEUTRAL position
When the engine is started, the transmission oil pump (1) pulls oil from oil sump (14). The oil flows through the suction screen and magnet (15). Transmission oil pump (1) sends pressurized oil through transmission oil filter (2). Pressurized transmission oil flows from the transmission oil filter to the oil inlet in the transmission case. The pressurized oil flows through internal tubes in order to supply transmission hydraulic control relief valve (10) with oil. The pressurized oil also flows through internal passages in the transmission hydraulic control manifold. The pressurized oil flows out of the internal passages in the transmission hydraulic control manifold into clutch solenoid modulating valves (4) and (9). Number 4 clutch solenoid (8) is energized because the transmission is in neutral. None of the remaining clutch solenoid modulating valves provide oil to the transmission clutches. The pressurized oil leakage drains to oil sump (14).
The transmission hydraulic control relief valve (10) sends torque converter inlet oil to torque converter (16). Torque converter outlet oil flows to oil cooler (13). After the oil cools, the oil flows to the transmission for transmission lubrication (17). After the transmission is lubricated and cooled, the oil drains to the oil sump (14).
Torque converter inlet relief valve (11) limits torque converter inlet oil pressure to a maximum of
Shifting the Transmission to the FIRST SPEED FORWARD position
The power train electronic control module (ECM) modulates the electrical current that is sent to the selected clutch solenoid modulating valve. Modulating the current to the clutch solenoid modulating valve controls the transmission clutch pressure.
When the transmission direction control switch and the upshift switch are shifted to the FIRST SPEED FORWARD position, both clutch solenoid Number 6 (9) and Number 2 (5) are energized.
Number 2 clutch solenoid (5) is electronically modulated when the Number 2 clutch is filled. Number 6 clutch solenoid (9) is electronically modulated when clutch Number 6 is filled. When the electrical current is modulated to the full current, the Number 6 clutch and the Number 2 clutch are at full oil pressure.
Clutch solenoid modulating valves (4), (6), (7), and (8) are not energized. The leakage oil drains to oil sump (14).
Transmission in the FOURTH SPEED REVERSE position
The power train electronic control module (ECM) modulates the electrical current that is sent to the selected clutch solenoid modulating valves. Modulating the current to the clutch solenoid modulating valve controls the transmission clutch pressure.
When the transmission direction control switch and the transmission upshift switch are shifted to the FOURTH SPEED REVERSE position, both Number 3 clutch solenoid (6) and Number 1 clutch solenoid (4) are energized.
Number 3 clutch solenoid (6) is electronically modulated when the Number 3 clutch is filled. Number 1 clutch solenoid (4) is electronically modulated when the Number 1 clutch is filled. When the electrical current is modulated to the full current, the Number 3 clutch and the Number 1 clutch are at full oil pressure.
Clutch solenoid modulating valves (5), (7), (8), and (9) are not energized. The leakage oil drains to oil sump (14).