REMOVAL, FILTER CHANGE & INSTALLATION
See Figures 1 through 14
- Raise the car and support it on jackstands.
The torque converters on some transmissions are equipped with drain plugs. Because it may take some time to drain the fluid from the converter, you may wish to follow that procedure at this time, then come back to the pan and filter removal.
- Place a drain pan under the transmission.
- Loosen all of the pan attaching bolts to within a few turns of complete removal, then carefully break the gasket seal allowing most of the fluid to drain.
- When fluid has drained to the level of the pan flange, remove the pan bolts and carefully lower the pan doing your best to drain the rest of the fluid into the drain pan.
- Clean the transmission oil pan thoroughly using a safe solvent, then allow it to air dry. DO NOT use a cloth to dry the pan which might leave behind bits of lint. Discard the old pan gasket.
- Loosen and remove the oil filter screen retaining bolts, then carefully lower the filter from the transmission. Make sure any gaskets or seals are removed with the old filter. The A4LD usually has an O-ring for each of the tubes connecting the filter to the valve body, while the AOD usually has one round seal and a rectangular gasket.
- Install the new oil filter screen making sure all gaskets or seals are in place, then secure using the retaining screws.
- Place a new gasket on the fluid pan, then install the pan to the transmission. Tighten the attaching bolts to 96-120 inch lbs. (11-14 Nm) for the A4LD transmission or to 71-119 inch lbs. (8-13 Nm) for AOD transmissions.
- Add three quarts of fluid to the transmission through the filler tube.
- Remove the jackstands and carefully lower the vehicle.
- Start the engine and move the gear selector through the shift pattern. Allow the engine to reach normal operating temperature.
- Check the transmission fluid. Add fluid, as necessary to obtain the correct level.
Some torque converters, such as those usually used on the AOD, are equipped with drain plugs, if so you will probably want to drain the fluid in the converter also at the time of a transmission pan fluid change. Just, make sure that you compensate during the refilling process for the additional fluid drained.
- Remove the lower engine dust cover.
- Rotate the torque converter until the drain plug comes into view.
- Remove the drain plug and allow the transmission fluid to drain. This could take some time, so you may wish to perform the other transmission service (fluid pan and filter removal) while waiting.
- Once the fluid has been drained, install the drain plug.
- Install the engine dust cover.
- Make sure the transmission is properly refilled with fluid before attempting to drive the vehicle.