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Thread: ARB compressor going on and off with locker engaged

  1. #11
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    I've no personal experience, but AFAIK there are a couple of o-rings on the air transfer ring that are known to leak.

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
    1988 120 with rust and potential
    1999 300tdi 130 single cab - "stock as bro"
    2003 D2a Td5 - the boss's daily drive

  2. #12
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    All the things I didn't need to hear unfortunately ARB compressor going on and off with locker engaged. I have a trip up to QLD during Christmas holidays in the D2 and I really didn't need this at the moment. Does anybody know the parts that might be needed to repair it?
    Thanks in advance.
    Chris

  3. #13
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    Not sure how close a Tojo unit is to a Landy one, but this video might give you a Clue.



    The joys of having search engines at your finger tips.


    .................................................. .................................................. ..................................



    But wait, there's more...



    Enjoy your air leaker dramas. (Don't forget to listen for the punchline!)

  4. #14
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    Yes very funny that last one. And his sneaky reply at the end. Still leaves me gutted thoughARB compressor going on and off with locker engaged

  5. #15
    MLD's Avatar
    MLD is offline Wizard Silver Subscriber
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    My understanding that ARB sell the new ones with a brace that keeps the air tube off the crown and adds stability. Might be worth asking ARB for the bits from the newer versions that are intended to remedy the older leak prone design. Wouldn't be more than a few hours for a diff specialist to pull front and rear 3rd housing out, replace the O ring, brace it and bolt 3rd housing back in. You will be right as rain for your upcoming trip with comfort that the lockers will engage when called on.

  6. #16
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    The ARB 'locker' in the rear of my 130 was leaking when I bought the vehicle and was repaired 3 times before a modification finally overcame the inherent design flaw and fixed the problem that ARB engineers are adamant doesn't exist. If you simply replace the two square-section O-rings in the seal housing you should put it back together with wing nuts as you will be doing it again soon. Colour me an Ashcroft fanboy if you will- from ARB I got excuses and denial, from Ashcrofts I got a front locker that has never missed a beat plus advice on how to overcome the problem with the rear ARB unit. If mine fails again it will be replaced by an Ashcroft unit.
    PM me if you're interested in discussing the problem and the fix, I don't have time to do a write-up of it at present.

  7. #17
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    Quote Originally Posted by POD View Post
    The ARB 'locker' in the rear of my 130 was leaking when I bought the vehicle and was repaired 3 times before a modification finally overcame the inherent design flaw and fixed the problem that ARB engineers are adamant doesn't exist. If you simply replace the two square-section O-rings in the seal housing you should put it back together with wing nuts as you will be doing it again soon. Colour me an Ashcroft fanboy if you will- from ARB I got excuses and denial, from Ashcrofts I got a front locker that has never missed a beat plus advice on how to overcome the problem with the rear ARB unit. If mine fails again it will be replaced by an Ashcroft unit.
    PM me if you're interested in discussing the problem and the fix, I don't have time to do a write-up of it at present.
    Only problem is Ashcroft don’t make a locker for the sals

    Thankfully both my ARB Lockers never missed a beat.

  8. #18
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    Read this years ago before buying Ashcroft.

    One of the key requirements for our design was zero air leaks as this is one of the main issues with other air operated lockers. To achieve this we opted for a static piston rather than the rotating seal used on other air lockers, which was prone to leaks. We also wanted to ensure we had a full 6mm of engagement when locked as other air lockers have just 2.5mm and are prone to slipping out of lock when loaded.

    Reference Ashcroft Locker - 4WD Industries

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