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| Illustration 1 | g00104490 |
Transmission Hydraulic Control (Side View) (1) Solenoids. (2) Control solenoid manifold. (3) Top manifold. (4) Selector and pressure control valve. (5) Plate. (6) Selector valve body. (7) Cover. | |
The transmission hydraulic control controls the oil pressure to the torque converter, to the transmission clutches, and to the lubrication circuits. The transmission hydraulic control also controls the flow of oil to the clutches. The transmission hydraulic control is installed on the top of the transmission planetary group. The control consists of the following components: solenoids (1), manifold (2), top manifold (3), selector and pressure control valve (4), plate (5) and selector valve body (6). The speed selector spool for second speed is behind cover (7).
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| Illustration 2 | g00104491 |
Transmission Hydraulic Control (Top View) (8) Number 3 clutch solenoid. (9) Number 4 clutch solenoid. (10) Number 5 clutch solenoid. (11) P1 pressure tap. (12) P3 pressure tap. (13) Oil tube for inlet from pump. (14) P2 pressure tap. (15) Oil tube for outlet to torque converter. (16) Number 2 clutch solenoid. (17) Number 1 clutch solenoid. (18) Plug for load piston. | |
Inlet oil for the operation of the hydraulic control flows from the transmission oil filters. This oil flows through tube (13) to the selector and pressure control valve.
Oil for the operation of the torque converter flows through tube (15) and through an oil line to the torque converter.
The clutch solenoids direct pump oil to the ends of the selector spools. The selector spools move in order to send oil to the clutch. This causes the clutch to engage.
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| Illustration 3 | g00104492 |
Transmission Hydraulic Control (Bottom View) (6) Selector valve body. (19) Passage to Number 4 clutch. (20) Passage to Number 2 clutch. (21) Passage to Number 1 clutch. (22) Passage to Number 3 clutch. (23) Passage to Number 5 clutch. | |
Oil to the clutches is sent through openings (19), (20), (21), (22), and (23) in the selector valve body. The selector valve body is attached to the top of the planetary group.