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Thread: 5HP18 (A5S310Z) strip down

  1. #11
    Join Date
    May 2004
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    Japan
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    The valve body you have to clean, put in new plastic balls, a new main gasket, test all the valves, clean them, clean all channels with brake cleaner and compressed air. That is it mainly. And the main harness of the valve body might have to be replaced, the plastic at the pin/spade connectors on the valves breaks for sure, but that is not the problem. I usually remove all the broken crumbled plastic and the connectors are fine. But the problem is the 7 (old version 8 pin) connector at the side of the transmission, have seen it often and at the moment also have one where the transmission fluid goes out of the transmission in the area around the pins inside the plug. These pins are in plastic but apparently over so many years it gets brittle. Then the whole plug fills up with transmission fluid and I have heard of cases that the transmission of the data between transmission and TCU was interrupted and caused transmission trouble.

    That set costs I assume around $ 100, I would replace it, just just found it here on the site our friend posted
    valve body harness 4HP22/24
    product ID 1043 227 016
    no price given there, pls check
    http://www.tsgparts.net/index.php?p=...parent=41&pg=1

  2. #12
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    May 2004
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  3. #13
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  4. #14
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    Dec 2004
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    Quote Originally Posted by shogun View Post
    What a blast from the past. Classic writeup, that!! Thanks for reviving it from the waybarkchine!

    BTW, @Shogun- where is the best place to buy a 5HP19 rebuild kit? The family car has thrown the front TC-Pump bushing and dropped some fluid out.

    Of course I can't find a manual replacement, so switching to a real transmission would probably require importation of a 325 or 330i from Japan or someplace for parts... very few manuals in Oz :-(
    Last edited by genphreak; 03-29-2022 at 12:52 AM.

    Join the Aussie
    540i LE yahoo forum

    08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!

  5. #15
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    Japan
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  6. #16
    Join Date
    Dec 2004
    Location
    Sydney, Australia
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    Join the Aussie
    540i LE yahoo forum

    08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!

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