504 transmission
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  1. #1
    Fellow Frogger!
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    Default 504 transmission

    Have run across a junked 76 504GL with a ZF3 HP22 transmission, only 62K miles, no leaks and the fluid in the tranny looks good (engine is shot, blown head gasket). I'm of a mind to pull this for the day my ZF3HP12 on my 74 504GL gives up the ghost, and the price is right. Have never done this sort of thing before however although some reading suggests that tranny removal is not too complicated. Note also that the junkyard does not allow jacks to be brought in although an engine hoist and the jack in the car are available. Any suggestions or things i need to be careful about (other than being crushed by a 90kg chunk of metal)?

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  2. #2
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    Quote Originally Posted by rpieper View Post
    Have run across a junked 76 504GL with a ZF3 HP22 transmission, only 62K miles, no leaks and the fluid in the tranny looks good (engine is shot, blown head gasket). I'm of a mind to pull this for the day my ZF3HP12 on my 74 504GL gives up the ghost, and the price is right. Have never done this sort of thing before however although some reading suggests that tranny removal is not too complicated. Note also that the junkyard does not allow jacks to be brought in although an engine hoist and the jack in the car are available. Any suggestions or things i need to be careful about (other than being crushed by a 90kg chunk of metal)?
    Dont try and get the engine out with the tranny still attached. Unless you can raise the car, you will need to pull the engine out first as the bell housing is in the way. The dismantling process is pretty simple, otherwise.
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  3. #3
    Budding Architect ???? pugrambo's Avatar
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    Quote Originally Posted by rpieper View Post
    Have run across a junked 76 504GL with a ZF3 HP22 transmission, only 62K miles, no leaks and the fluid in the tranny looks good (engine is shot, blown head gasket). I'm of a mind to pull this for the day my ZF3HP12 on my 74 504GL gives up the ghost, and the price is right. Have never done this sort of thing before however although some reading suggests that tranny removal is not too complicated. Note also that the junkyard does not allow jacks to be brought in although an engine hoist and the jack in the car are available. Any suggestions or things i need to be careful about (other than being crushed by a 90kg chunk of metal)?

    lift the car off the engine/tranny

    so esay to do and a lot less hassle
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  4. #4
    1000+ Posts Wildebeest's Avatar
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    rpieper,
    Not the sort of job to be done lying on your back in the mud, oil and crap found in junkyards.
    I'm told 504 automatics can be removed by detaching and pulling back the diff and torque tube. Remove the converter bolts. undo the bell housing, pull the trans back and lower.
    All the above of course in a workshop with hoist etc.

  5. #5
    1000+ Posts Peter C's Avatar
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    Some years ago I removed a Borg Warner 35 auto from a 504 at the wreckers. I left the engine in place and unbolted the gearbox from it. I must've unbolted the torque tube as well. The main problem I had was safety. Laying on your back under a car with an auto tranmission ready to drop down is not a good thing. BA7s are okay because they are much lighter. An auto is very heavy and I would definately not trust the jack that comes with the car. Maybe you could use a tyre to drop the transmission down onto. Whatever you end up doing you need to be well clear of the gearbox when it's ready to come off.

  6. #6
    Budding Architect ???? pugrambo's Avatar
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    if jacks can't be used then using a crane to lift the body off is going to be the easiest and safest way about it

    just undo the 4 bolts at the rear of the box, wiring and plumbing to the engine and the strut tops and cross member and lift the body off

    then you can pull the front 1/2 of the running gear clear
    3 x '78 604 SL

    1 x 2018 3008

    1 x 2000 Citroen XM,

    1 x '98 306 GTi6 sadly sold

    1 x secret project

    1 x '98 406 STDT troop carrier and i don't care if it stinks, i don't sniff it's arse Death by wank tank

    1 x '99 406SV 5spd wagon, time to burn more fuel

    1 x 1994 605 SV3.0

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