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Technical 200-4r Rebuild

Discussion in 'The Hokey Ass Message Board' started by 66GMC GUY, Aug 26, 2026.

  1. 66GMC GUY
    Joined: Mar 24, 2026
    Posts: 196

    66GMC GUY
    Member

    Also, for anyone curious, my home made HAMB approved rebuild stand. 360° pivoting, with fully adjustable built in output shaft support. 20260915_101139.jpg 20260915_101147.jpg
     
  2. 66GMC GUY
    Joined: Mar 24, 2026
    Posts: 196

    66GMC GUY
    Member

    Youre welcome! I do it because info on these isnt exactly common, and in past years I've been saved numerous times by stumbling upon forum write ups on how to. This is my way of giving back and adding to the pool of knowledge that forums provide so well.
     
    Wanderlust, SS327, Algoma56 and 3 others like this.
  3. Max Gearhead
    Joined: Oct 16, 2002
    Posts: 7,962

    Max Gearhead
    Member
    from Wisconsin

  4. SS327
    Joined: Sep 11, 2017
    Posts: 4,523

    SS327

    All the bushings seem to have a lot of wear. How many miles are on that transmission?
     
  5. justpassinthru
    Joined: Jul 23, 2010
    Posts: 674

    justpassinthru
    Member

    I think you got real lucky as the internals don't look too bad, considering what you went through to get it apart. I would have expected more wear/damage of other parts also.

    Trans has been apart before as that is not how the order of the OD frictions and steels go.
    Correct way is: 1 steel at the bottom, 1 friction, 2 steels together, 1 friction and then the pressure plate and snap ring.

    It does have a hardened sun shell, early ones were not hardened and were a high failure rate.

    Other common wear points are the overrun clutch drum to pump thrust washer can get heavy wear/scoring.
    Br*** washers between the pinion gears and carrier can wear excessive.
    Direct drum can get bad ring grooves where the sealant rings ride.
    Intermediate band surface on direct drum can have a belly in it. (check with a straight edge)
    Nylon washers can have metal particles imbedded.
    Some bushings always have too much wear and need to be replaced, some never show wear and are re-usable.
    Always use a nylon washer between sun shell and rear center support. Never use the bronze washer available or it will wear the center support premature.
    When replacing the pump, be sure to upgrade from the factory 7 vane to a 10 vane.

    At least from the photos, you have a workable piece.

    Bill
     
    Algoma56, 66GMC GUY and pprather like this.
  6. 66GMC GUY
    Joined: Mar 24, 2026
    Posts: 196

    66GMC GUY
    Member

    I bought it as a used core, so honestly I have no idea.
    Good to know! I actually picked it up over in your neck of the woods (chicago area) so who knows who went through it previously.
     
  7. patsurf
    Joined: Jan 18, 2018
    Posts: 3,398

    patsurf

    never heard of that method w/ frictions..!
     
  8. justpassinthru
    Joined: Jul 23, 2010
    Posts: 674

    justpassinthru
    Member

    That's the way they were all built from the factory, from beginning to end of production.

    Bill
     

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