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Ford A4LD transmission rebuild diary - How to rebuild Ford A4LD

Discussion in 'General Explorations!!' started by Glacier991, January 20, 2004.


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    1. Billy177

      Billy177 Well-Known Member

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      i find this thread very helpful when my tranny goes out although not the same it is very helpful to know what is involved so i can hopefully rebuild mine
       
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    3. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      the guts of the A4LD are the same as the 4R55 and closely related to the 5R55, so they are more then just cousins under the skin. The big change came in electronic shift control. 5 solenoids in place of 2. Guts, same, or mostly. Valve body? WAY different... Governor ? Gone - in 1995 - in place of electronic speed control monitoring on the center support.
       
      Last edited: March 13, 2004
    4. zippee

      zippee Member

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      Chris, this thread is excellent. You almost have me convinced that I could do mine myself.
       
    5. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      A little postscript... that nasty damage behind the rear planetary inside the ring gear? It appears that by 2000 FORD had replaced that thrust washer with a torrington bearing - I am exploring THAT possible upgrade too.
       
    6. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      I am saving this space for a short discussion about snap rings. I am more and more believing that SNAP rings, of all kinds, are somethnig that you should NOT re-use. I have some pix to illustrate this, and I'll add them as soon as I get time.
       
    7. Con Seann3ry

      Con Seann3ry Active Member

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      Allright...newb question. Can you give a brief explanation of how auto trannies work or if you have a website that it explains it or something.
       
    8. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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    9. dogfriend

      dogfriend Human-Animal Hybrid

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      Considering the relatively low cost of most snap rings vs. the damage that can occur if one fails - I would put reusing them in the "false economy" catagory.
       
    10. Con Seann3ry

      Con Seann3ry Active Member

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      Hey thanks a lot glacier, I really appreciate it. That site is awesome...I've spent all night reading about everything I ever wondered about. Now i just need the experience :)
       
    11. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      Final aspect of teardown

      Well, as I write this I am already starting into th rebuild, but the onething we didn;t do in this teardwn part of this thread is tear down the pump/bellhousing. No a lot to it. Remove the pump allen head bolts (6mm)

      [​IMG]

      Here's the pump gearset and the pump body once removed

      [​IMG]

      Here's the pump separator plate coming off with the pump removed
      [​IMG]

      And the end of the bellhousing underneath

      [​IMG]

      This was a rebuild... I'll show you in a bit how I know.... but the pump shaft showed ascarsof eccentric rotation (eg lack of beng centered)... I'll post a couple pics hoping to show it... here's the first, see the wear ?

      [​IMG]

      heres the 2nd

      [​IMG]

      And here is the infamous bushing - this one has had some wars... scarred

      [​IMG]

      ok, I had been told this was rebuilt. But I KNEW it was once I had lookd in the bellhousing.
      Like rings on a tree, the number of "stake marks" (4 per build) give it away. This seal shows 10 ...equals at least one rebuild.

      [​IMG]

      We will be exchanging the bellhousing for one with a line bored bushing and a new seal.... so with this, the teardown is complete. On the rebuild I will try and show how to DIY parts of the seal and bushing replacement... BUT ....the only right way is to get it line bored.. on this point I AM resolute. Disgree if you like, but GET IT LINE BORED! Or be sorry.
       
      Last edited: March 11, 2004
    12. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      1
       
      Last edited: March 25, 2004
    13. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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    14. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      bump
       

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    15. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      Another bump to regroup
       
    16. Glacier991

      Glacier991 EF Tranny Guru Moderator Emeritus

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      one ... probably last, bump to regroup
       

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