Scavenge Screens & Seals (4T80-E): Removal
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- Raise the vehicle and support. Place a drain pan under the transmission bottom pan in order to catch the fluid.
- Loosen the bottom pan bolts. Drain any fluid in the pan. Remove the bottom pan bolts, pan, and seal. See Figure . Inspect the bottom pan for dents or nicks on the sealing surface. If damaged, replace.
- For proper sealing, clean and dry the bottom pan and the case sealing surfaces. In order to maintain proper bolt torque, the bolts and tapped holes in the case must be clean and dry. Remove the left and/or right scavenge screens. See Fig 1 .
NOTE:
On 4T80-E, removing the bottom pan only partially drains the transaxle fluid. The side cover and the torque converter hold the remaining fluid. To drain fluid from the side cover, remove the drain plug in the case after bottom pan removal. There is no need to drain the torque converter during most service procedures.
NOTE:
The bottom pan seal is reusable. Replace with a new seal only if sealing surface is damaged.