Results 1 to 5 of 5

Thread: Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

  1. #1
    Member ccc's Avatar
    Join Date
    Sep 2012
    Location
    British Columbia, Canada
    Posts
    56

    Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

    Hi, my 92 400e, appears to be leaking from the rear engine seal.
    Oh bother. I was hoping to ignore it for a while, but the amount of oil is beyond my comfort now.....driping on the garage floor.....

    Any tips on whether it is best to drop the tranny or to lift the engine?

    Both angine and tranny work well it seems,
    the car has 130 000km,
    the tranny was pulled and serviced 2 years ago,
    the front rail guides and chain were recently
    replaced.

    Chris
    Chris
    400E 92 Almandine Red, 'Layla', $4000, 2012 with 130 000k, garage project so far
    E320 95, B/B, i turned him Sportline, daily, in neglect, 180 000k

  2. #2

    Re: Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

    Pull the transmission
    1992 500E face lifted with Sliver Arrow brake upgrade
    1995 M3 track toy
    2005 X5 family truckster
    1980 RX-7 first car

  3. #3
    Member kubasz's Avatar
    Join Date
    Jan 2011
    Location
    Poland/Radom
    Age
    31
    Posts
    99

    Re: Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

    Drop the transmission :P
    '93 600SEL 199
    '04 E55 AMG 744

  4. #4
    .036 Hoonigan™
    E500E Boffin
    gsxr's Avatar
    Join Date
    Dec 2008
    Location
    Boise, ID, USA
    Posts
    18,533

    Re: Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

    Pull the transmission, and while it's out, replace EVERY external seal on the tranny, unless you are absolutely 110% completely positive that each and every one was replaced during the tranny "service" 2 years ago. If it really was re-sealed 2 years ago, the trans should be completely dry everywhere (well, except for engine oil blowing back onto it).

    First I'd try to verify it's the rear main seal that is leaking, this is not a common leak on the M119. Only use the OE/dealer seal and I'd recommend using the correct seal installation tool if at all possible. You don't want to screw this up and have to repeat the job.

    While the tranny is out, it's easy to access engine mounts, so unless they are recent, replace those with OE/OEM only. You may also have a little better access to the power steering box/hoses if those are damp.

    Dave M.
    1997 E420 (Bugeyes)
    1994 E420 (Blondie)
    1994 E500 (Q-ship)
    1992 500E (Mach 5)
    1987 300D (Sportline Stage 2)
    Click here for my website
    Click here for my YouTube channel

  5. #5
    Senior Member DW SD's Avatar
    Join Date
    Oct 2012
    Location
    Encinitas
    Posts
    478

    Re: Rear engine seal, what else to do at same time? Drop the tranny, or take out the engine?

    Chris,
    Did you pull the transmission and solve the leak? If so, can you offer a post-mortem account? Did you end up changing only the crank seal or also the seal behind the rear engine cover?

    Thank you,

    Doug

Similar Threads

  1. Engine startup time
    By Jelmer in forum M119 Engine
    Replies: 32
    Last Post: 11-14-2012, 08:39 AM
  2. S60 Engine
    By fudgitive in forum High-Performance Modifications
    Replies: 11
    Last Post: 12-21-2011, 12:16 PM
  3. Codes pulled with engine running/engine off
    By Benzer in forum M119 Engine
    Replies: 5
    Last Post: 03-30-2011, 07:59 PM
  4. ENGINE MISFIRES WHEN HOT
    By ceed09 in forum M119 Engine
    Replies: 4
    Last Post: 12-05-2010, 12:45 PM
  5. V10 Engine on a M3
    By 500ESpain in forum Off-Topic Discussions
    Replies: 1
    Last Post: 11-16-2009, 04:08 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •