DIAGNOSIS AND TESTING - TORQUE CONVERTER HOUSING FLUID LEAKAGE
When diagnosing converter housing fluid leaks, three actions must be taken before repair
- Verify proper transmission fluid level.
- Verify that the leak originates from the converter housing area and is transmission fluid.
- Determine the true source of the leak.
Fluid leakage at or around the torque converter area may originate from an engine oil leak. (Scheme 61) The area should be examined closely. Factory fill fluid is red and, therefore, can be distinguished from engine oil.
Scheme 61
Some suspected converter housing fluid leaks may not be leaks at all. They may only be the result of residual fluid in the converter housing, or excess fluid spilled during factory fill, or fill after repair. Converter housing leaks have several potential sources. Through careful observation, a leak source can be identified before removing the transmission for repair.
Pump seal leaks tend to move along the drive hub and onto the rear of the converter. (Scheme 61) Pump O-ring or pump body leaks follow the same path as a seal leak. Pump attaching bolt leaks are generally deposited on the inside of the converter housing and not on the converter itself. Pump seal or gasket leaks usually travel down the inside of the converter housing. (Scheme 61)
TORQUE CONVERTER LEAKAGE
Possible sources of torque converter leakage are
Scheme 62
- Torque converter weld leaks at the outside diameter weld. (Scheme 62)
- Torque converter hub weld. (Scheme 62)
SPECIFICATIONS
| DESCRIPTION | SPECIFICATION |
|---|---|
| Transaxle Type | Fully adaptive, electronically controlled, four speed automatic with torque converter and integral differential |
| Cooling Method | Oil-to-Water Heat Exhanger |
| Lubrication | Pump (internal-external gear-type |
General Specifications Chart
Scheme 63
Scheme 64
Scheme 65
Scheme 66
Scheme 67
| DESCRIPTION | N.m | Ft. Lbs. | In. Lbs. |
|---|---|---|---|
| Bolt, Differential Cover-to-Case | 19 | 165 | |
| Bolt, Differential Ring Gear-to-Case | 95 | 70 | |
| Bolt, Differential Bearing Retainer-to-Case | 28 | 21 | |
| Bolt, Driveplate-to-Crankshaft | 95 | 70 | |
| Bolt, Extension Housing/ Plate-to-Case | 28 | 21 | |
| Bolt, Oil Pan-to-Case | 19 | 165 | |
| Bolt, Output Gear | 271 | 200 | |
| Bolt, Output Gear Stirrup/Strap | 23 | 17 | |
| Bolt, Oil Pump-to-Case | 27 | 20 | |
| Bolt, Reaction Support-to-Case | 27 | 20 | |
| Bolt, Solenoid/Pressure Switch Assy.-to-Case | 12 | 110 | |
| Bolt, Torque Converter-to-Driveplate | 75 | 55 | |
| Bolt, Transfer Gear Cover | 20 | 175 | |
| Bolt, Valve Body-to-Case | 12 | 105 | |
| Fitting, Oil Cooler Line | 12 | 105 | |
| Nut, Tranfer Gear | 271 | 200 | |
| Tap, Transaxle Pressure | 5 | 45 | |
| Screw, L/R Clutch Retainer | 5 | 45 | |
| Screw, Solenoid/Pressure Switch Assy. Connector | 4 | 35 | |
| Screw, Valve Body-to-Transfer Plate | 5 | 45 | |
| Sensor, Input Speed | 27 | 20 | |
| Sensor, Output Speed | 27 | 20 | |
| Sensor, Transmission Range Sensor | 5 | 45 |
Torque Specifications
