From the outside, a replacement converter may look the same as the original. Be careful not to use the wrong one, as vehicle performance and fuel economy will be changed. It is a good practice to thoroughly inspect and check over a replacement torque converter to guarantee its quality.
- When replacing the torque converter, if the transmission is to be removed, make center punch marks on the converter and the flexplate so that they can be correctly aligned on reassembly.
- Remove the torque converter attaching bolts from the flywheel flexplate.
Use an impact wrench when removing torque converter bolts or nuts so that you will not have to hold the crank to keep it from turning.
- To gain access to each bolt, rotate the engine by turning the crankshaft with a special flywheel turning tool, or by using a large socket and ratchet on the damper bolt at the front of the engine crankshaft.
Turning the crank using the damper bolt.
- Pry the torque converter toward the transmission, away from the flexplate.
- Leave the converter installed in the front of the transmission during engine removal so transmission fluid will not pour out of it.
- A c-clamp can be clamped on the transmission housing to to keep the converter in place in the front pump of the transmission.
- The converter can also be held into the transmission with safety wire or a bar bolted across the front of the converter housing. If the converter slides too far forward, it will come out of the transmission front pump. It must be realigned with the front-pump drive gear to prevent damage to the pump and flexplate when the engine is reinstalled.
- If the converter slides too far forward, it will come out of the transmission front pump. It must be realigned with the front-pump drive gear to prevent damage to the pump and flexplate when the engine is reinstalled.
- When the engine and transmission are first separated, measure and record the distance from the edge of the converter housing to the front of the converter.
Although performing this step is not necessary it can give peace of mind that the converter is installed all the way during reassembly.
Ideally, converters without studs should be only 1/8" from the flexplate when pushed as far into the transmission as possible. This ensures that the transmission front-pump drive gear is sufficiently engaged by the torque converter drive lug. If the distance is more than 1/8", shims can be installed.
Installing A Converter
Install the torque converter, making sure it is correctly engaged with the transmission's front pump. The drive lugs on the converter should be felt engaging the transmission front pump gear. Failure to correctly install the converter can result in damage to the transmission's front pump.