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Thread: No 1st with zf 4hp22

  1. #21
    Join Date
    Jan 1970
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    Pennant Hills, Sydney
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    I will have a look at my spare A clutch pack i think yours has been modified but may nt have drilled out the supply port to compensate.

    I would personnal go back to the orginal set up the reason this mod was done was for the emission test method done in the states which caused a lot of A clutch failures due to leaking seals engaging the A clutch pack slightly and burning them out
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message

  2. #22
    Join Date
    Oct 2009
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    Hunter Valley
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    zf1.jpg
    Here is a better picture of this orifice i was talking about. I was talking to a another person about this and he thought that there may be a spring and ball in this orifice or in the port, This one has nothing. Do you have a spare intermediate plate that you could check for me?
    The box is at my brothers place I will get him to have a look. I cant recall seeing any bleed holes on the clutch drum or piston but will get him to check.
    It doesn't leak oil, Its sweating power

  3. #23
    Join Date
    Jan 1970
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    Pennant Hills, Sydney
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    Will check in the weekend the rental I moved into has stuff all lighting in the garage, the hole that is part of the mod is drilled into another part from memory it is drilled into the piston.

    Might be able to look Thursday night if I get home at reasonable time leave in the dark and return in the dark.
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message

  4. #24
    Join Date
    Oct 2009
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    Hunter Valley
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    Quote Originally Posted by stevo View Post
    Will check in the weekend the rental I moved into has stuff all lighting in the garage, the hole that is part of the mod is drilled into another part from memory it is drilled into the piston.

    Might be able to look Thursday night if I get home at reasonable time leave in the dark and return in the dark.
    Thanks for that. Weekend will fine. I know the feeling of leave in dark return in dark, I work 12.5hr rotating roster. I found the mod, and your right, it's a 0.045" hole in the piston

    Sent from my GT-I9295 using AULRO mobile app
    It doesn't leak oil, Its sweating power

  5. #25
    Join Date
    Oct 2009
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    Hunter Valley
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    Problem repaired. It is not a orifice, it's a air bleed and the ball is missing.
    Thanks Stevo for all your help.

    Sent from my GT-I9295 using AULRO mobile app
    It doesn't leak oil, Its sweating power

  6. #26
    Join Date
    Jan 1970
    Location
    Pennant Hills, Sydney
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    Glad to hear you found it, most people would have given up, you will be an expert on the auto trans now
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message

  7. #27
    Join Date
    Oct 2009
    Location
    Hunter Valley
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    Quote Originally Posted by stevo View Post
    Glad to hear you found it, most people would have given up, you will be an expert on the auto trans now
    Thanks. I was over R&R of this box. Last removal took 2 of us 15 min to get out
    Worst thing is that valve is not shown in parts or service manuals

    Sent from my GT-I9295 using AULRO mobile app
    It doesn't leak oil, Its sweating power

  8. #28
    Join Date
    Jan 1970
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    Pennant Hills, Sydney
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    Yes i know it is known that ZF do not give out a lot of info on their transmissions, i got a lot of my info from months if searching forums, and used some of the info from the BMW forums on stac heights on clutch packs etc.
    disco seriesII mods so far:-bullbar,hyd winch,
    detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.

    In the event of nuclear war,Disregard this message

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