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Thread: Rebuild D2 ZF Selector Switch UHB100190

  1. #31
    Join Date
    Jun 2018
    Location
    Boya
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    5
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    Just a note for the record, in case anybody has a similar problem. My D2 was doing this intermittent flashing M + S lights, which would usually go away with a switch-off/switch-on of the ignition. Talking to the previous owner, this issue had been years in existence. Last week it finally went to limp-home permanently. We had checked all of the usual suspects as described above, including changing the inhibitor switch (XYZ) with a known-to-work used replacement. No dice. Yesterday had the tranny ICU replaced (under the passenger seat), and all good. So it was the ICU itself.

  2. #32
    Join Date
    Jan 2020
    Location
    Tasmania
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    13
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    Quote Originally Posted by Michael2 View Post
    D2 Auto Selector Switch. p/n UHB100190



    Drill out the rivets



    Cover Off



    A cover showing water ingress damage



    Lift the tabs over the wire crimps



    Tab off - wire crimps revealed



    Continue to remove the tabs







    All the tabs off



    I marked the position of the wheel - this is not necassary



    Remove the wheel - notice O-Ring seal either side of it.



    The wheel



    The cams on the wheel that actuate the switch.



    Clean with a contact cleaner that doesn't leave a residue



    Prise out the whole assembly - do not remove the tan coloured tabs, and the micro-switches don't have prise open tops.



    The silver contacts are moved by the cam on the wheel to actuate the micro-switches. These cams have a mechanical function (not electrical). They will wobble a bit, but test that when pushed firmly in, they have some spring resistance as the open the electrical contact.



    The electrical contacts are on the outside of the assembly. Clean these well, they're like indicator stalk switches in the nature of their construction.



    Here you can see the wiring and both switches.



    Remove the rubber seal and apply silicone to both faces, then reuse the seal and bolt it together using nylock nuts.

    I can't see the photos?
    Is there something I'm supposed to do to see them???

  3. #33
    Join Date
    Jan 1970
    Location
    NSW far north coast
    Posts
    17,279
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    Quote Originally Posted by Ypahihi View Post
    I can't see the photos?
    Is there something I'm supposed to do to see them???
    Nup, no pics.
    Possibly an outside image hoster was used.

  4. #34
    Join Date
    Jan 1970
    Location
    Melbourne
    Posts
    2,971
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    [1] D2 Auto Selector Switch UHB100190.jpg
    D2 Auto Selector Switch. p/n UHB100190
    [2] drill out rivets.jpg
    Drill out the rivets

    [3] cover off.jpg
    Cover Off

    [4] discoloured cover suggesting water damage.jpg
    A cover showing water ingress damage

    [6] first tab off.jpg
    Lift the tabs over the wire crimps

    [7] lift the tabs.jpg
    Tab off - wire crimps revealed

    [8] 2nd tab off.jpg
    Continue to remove the tabs

    [9] all the tabs off.jpg
    All the tabs off

    [10] you don't need to mark the position of the wheel.jpg
    I marked the position of the wheel - this is not necassary

    [12] remove the selector wheel.jpg
    Remove the wheel - notice O-Ring seal either side of it.

    [13] selector wheel profile with black 0 ring.jpg
    The wheel

    [14] selector wheel cam lobes.jpg
    The cams on the wheel that actuate the switch.

    [15] contact cleaner.jpg
    Clean with a contact cleaner that doesn't leave a residue
    ***This cleaner was corrosive and the contacts failed after some days - use non corrosive***

    [16] prise out the whole assembly.jpg
    Prise out the whole assembly - do not remove the tan coloured tabs, and the micro-switches don't have prise open tops.

    [17] inner contacts.jpg
    The silver contacts are moved by the cam on the wheel to actuate the micro-switches. These cams have a mechanical function (not electrical). They will wobble a bit, but test that when pushed firmly in, they have some spring resistance as the open the electrical contact.

    [19] showing both sets of contact points.jpg
    Here you can see the wiring and both switches.

    The electrical contacts are on the outside of the assembly. Clean these well, they're like indicator stalk switches in the nature of their construction.

    [18] outer contact points.jpg
    The electrical contacts are on the outside of the assembly. Clean these well, they're like indicator stalk switches in the nature of their construction.

    [22] seal with silicone and use small bolts and nylocks to reassemble.jpg

    Remove the rubber seal and apply silicone to both faces, then reuse the seal and bolt it together using nylock nuts.

    Attached Images Attached Images

  5. #35
    Join Date
    May 2003
    Location
    On The Road
    Posts
    29,830
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    Thanks Michael !!
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!


    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]

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