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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Drivetrain AOD Front Pump Seal Replacement Advice

  • Thread starter Thread starter markinms
  • Start date Start date Jan 20, 2021

markinms

5 Year Member
Mar 1, 2018
88
14
18
Columbus MS
Jan 20, 2021
#1
  • Jan 20, 2021
  • #1
87 BII, 5.0L, AOD.

I recently pulled the engine when I upgraded the heads. While removing the engine, a small amount of trans fluid leaked when the torque converter came forward while remaining attached to the flexplate. Leaking stopped when I repositioned the torque converter.

Today, while reinstalling the engine, I again lost some trans fluid when the flexplate pushed up against the torque converter.

Since all was fine prior to removing the engine, I'm thinking I may have damaged the AOD's front pump/torque converter seal.

My questions are this: would it be possible to replace the front pump seal with the trans still in the vehicle? Would it be possible to replace the seal with the front pump still installed or would it be best to remove the front pump first? Finally, would it just be best to remove the transmission and do all work off the vehicle?

As always, I appreciate any help or feedback you can offer.

Mark
 

HemiRick

I'd be looking at jacking under the house
Jun 28, 2020
723
272
73
Memphis TN
Jan 20, 2021
#2
  • Jan 20, 2021
  • #2
Its entirely possible to replace the front seal w the trans in the car, remove the torque converter, and then use a seal puller to remove old seal and then carefully pound in new seal.
 

markinms

5 Year Member
Mar 1, 2018
88
14
18
Columbus MS
Jan 21, 2021
#3
  • Jan 21, 2021
  • #3
Worked like a charm! Replaced in less than 5 minutes.

Thanks for your feedback!
Mark
 
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