Slips in 1st Gear
Checks
| Causes
|
Forward Clutch Assembly (646-651)
|
| • | Porosity or damage in forward clutch piston |
| • | Forward clutch piston inner and outer seals missing, cut or damaged |
| • | Damaged forward clutch housing |
| • | Forward clutch housing retainer and ball assembly not sealing
or damaged |
|
Forward Clutch Accumulator (353-358)
|
| • | Piston seal missing, cut or damaged |
| • | Porosity in the piston or valve body |
|
Input Housing and Shaft Assembly (621)
| Turbine shaft
seals missing, cut or damaged
|
Valve Body (60)
|
| • | 1-2 Accumulator valve stuck |
| • | Face not flat, damaged lands or interconnected passages |
| • | Spacer plate or gaskets incorrect, mispositioned or damaged |
|
Low Roller Clutch (678)
|
| • | Damage to lugs to inner ramps |
| • | Rollers not free moving |
| • | Inadequate spring tension |
| • | Damage to inner splines |
|
Torque Converter (1)
| Stator roller clutch
not holding
|
1-2 Accumulator Assembly (55-57, 104)
|
| • | Porosity in piston or 1-2 Accumulator cover and pin assembly |
| • | Damaged ring grooves on piston |
| • | Piston seal missing, cut or damaged |
| • | Valve body to spacer plate gasket at 1-2 Accumulator cover, missing
or damaged |
| • | Leak between piston and pin |
| • | Broken 1-2 Accumulator spring |
|
Line Pressure
| Refer to
Oil Pressure High or Low
.
|
2-4 Servo Assembly (13-28)
| 4th Servo
piston in backward
|
