Slips in Reverse or No Reverse
Checks
| Cause
|
DEFINITION: A large engine RPM
increase is noted with little or no vehicle rearward speed increase during
the following conditions:
| • | The transmission is in Reverse range. |
| • | The vehicle is stopped or moving slowly. |
| • | The vehicle brakes are not applied. |
| • | The throttle is opened 25 percent or greater. |
|
Automatic Transmission Fluid Level
| Low fluid level
|
Transmission Main Line Pressure
| Low transmission main line
pressure
|
Manual Linkage
| Misadjusted
|
Oil Filter Assembly
|
| • | The oil filter assembly (100) is missing, plugged, or damaged. |
| • | The oil filter seal assembly (101) is missing or damaged. |
|
Reverse Band Servo Assembly
|
| • | A servo piston oil seal ring (43) is missing or is damaged. |
| • | A servo piston (44) is damaged or is stuck in the case bore. |
| • | The servo piston cushion springs (45, 47) or the retainer (46)
is missing or damaged. |
| • | The servo piston pin (48) is not engaged to the reverse band assembly
(615). |
| • | The reverse band assembly (615) is worn or burned. |
| • | The reverse band assembly (615) is disengaged from the anchor
pin (117B) band. |
| • | The anchor pin (117B) is loose or missing. |
|
Torque
Converter Assembly
| The torque converter assembly (1) stator clutch is not holding.
|
Drive
Link Assembly
|
| • | The drive link assembly (507) is broken. |
| • | The drive/driven sprockets (516/506) are damaged. |
|
Input Clutch Assembly
|
| • | The input clutch sprag assembly (722) is damaged or misassembled. |
| • | The input clutch housing oil seal rings (628) are missing or are
damaged. |
| • | The input clutch housing ball check valve assembly (633) is missing
or is damaged. |
| • | The input clutch piston inner/outer seals (634/635) are missing
or are damaged. |
| • | The input clutch piston (636) is damaged. |
| • | The input clutch plates (654-658) are worn. |
|
Reverse Reaction Drum
| The reverse reaction drum (669) splines are damaged.
|
Input and Reaction
Carrier Assemblies
| The input carrier assembly (672) or the reaction carrier assembly (675)
components are damaged.
|
Differential Carrier Assembly
|
| • | The park pawl assembly (694) is broken or damaged. |
| • | The sun gear shaft (689), the internal gear assembly (693), or
the carrier assembly (700) components are damaged. |
|
