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| Illustration 1 | g00664677 |
Transmission Hydraulic System The engine is running in FIFTH speed. (1) Downshift solenoid (2) Upshift solenoid (3) Rotary actuator (4) Pressure control valve (5) Modulation reduction valve for the No. 5 clutch (6) Load piston for No. 5 clutch (7) Selector piston for No. 5 clutch (8) Charging section of transmission oil pump (9) Transmission oil filter (10) Selector piston for No. 1 clutch (11) Load piston for No. 1 clutch (12) Modulation reduction valve for No. 1 clutch (13) Modulation reduction valve for No. 4 clutch (14) Load piston for No. 4 clutch (15) Selector piston for No. 4 clutch (16) Scavenge section of transmission oil pump (17) Scavenge screen (18) Torque converter (19) Priority reduction valve (20) Neutralizer valve (21) Rotary selector valve spool (22) Selector valve (23) Selector piston for No. 2 clutch (24) Load piston for No. 2 clutch (25) Modulation reduction valve for No. 2 clutch (26) Modulation reduction valve for No. 6 clutch (27) Load piston for No. 6 clutch (28) Selector piston for No. 6 clutch (29) Magnetic screen (30) Reservoir in differential case (31) Reservoir in transmission case (32) Passage for transmission lubrication (33) Selector piston for No. 7 clutch (34) Load piston for No. 7 clutch (35) Modulation reduction valve for No. 7 clutch (36) Modulation reduction valve for No. 3 clutch (37) Load piston for No. 3 clutch (38) Selector piston for No. 3 clutch (39) Retarder air control valve (if equipped) (40) Inlet relief valve for torque converter (41) Retarder hydraulic control valve (if equipped) (42) Retarder (if equipped) (43) Transmission oil cooler (44) Relief valve for transmission pump (A) Pressure tap for No. 1 clutch (B) Pressure tap for No. 2 clutch (C) Pressure tap for No. 7 clutch (D) This pressure tap is not used. (E) Pressure tap for No. 5 clutch (F) Pressure tap for No. 4 clutch (G) Pressure tap for No. 6 clutch (H) Pressure tap for No. 3 clutch (J) Pressure tap for upshift (K) Pressure tap for downshift (L) Pressure tap for pump (M) Pressure tap for pilot oil (N) Pressure tap for transmission lubrication (P) Pressure tap for torque converter outlet | |
Note: Without a retarder, the flow of oil from torque converter (18) flows directly to the transmission oil cooler (43). The oil then flows to the transmission lubrication.
Component and Pressure Tap Locations
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| Illustration 2 | g00636598 |
Transmission Lines (Top View) (16) Scavenge section of transmission oil pump (32) Passage for transmission lubrication (N) Pressure tap for transmission lubrication (P) Pressure tap for torque converter outlet | |
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| Illustration 3 | g00636599 |
Transmission Lines (Side View) (16) Scavenge section of transmission oil pump (43) Transmission oil cooler (N) Pressure tap for transmission lubrication (P) Pressure tap for torque converter | |
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| Illustration 4 | g00636059 |
Pressure Control Valve (A) Pressure tap for No. 1 clutch (B) Pressure tap for No. 2 clutch (C) Pressure tap for No. 7 clutch (D) This pressure tap is not used. (E) Pressure tap for No. 5 clutch (F) Pressure tap for No. 4 clutch (G) Pressure tap for No. 6 clutch (H) Pressure tap for No. 3 clutch (M) Pressure tap for pilot oil | |
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| Illustration 5 | g00635185 |
Left Side of Transmission (L) Pressure tap for transmission pump | |
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| Illustration 6 | g00636601 |
Bottom Rear of Transfer Case (17) Scavenge screen (29) Magnetic screen | |
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| Illustration 7 | g00636602 |
Left Side of Transmission (1) Downshift solenoid (2) Upshift solenoid | |
| Speed Selector Chart | |
| Speed | Engaged Clutches |
| NEUTRAL | 4 |
| REVERSE | 1 and 7 |
| FIRST Speed | 1 and 7 |
| SECOND Speed | 1 and 5 |
| THIRDSpeed | 3 and 6 |
| FOURTH Speed | 2 and 6 |
| FIFTH Speed | 3 and 5 |
| SIXTH Speed | 2 and 5 |
| SEVENTH Speed | 3 and 4 |
| EIGHTHSpeed | 2 and 4 |