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  • Dead in 2 weeks! Help restore my faith please

    Hi all, 2 weeks ago I became the proud owner of my 1st 4x4 a 96 nk gls. It has done 200,000k but never off road and looks very well maintained.

    I've been glowing every day since but this afternoon 2ookm in to our relationship it died.

    I have virtually no mechanical experience myself but perhaps you could advise me anyway. It had the water pump and timing belt replaced 3 months ago by a Non Mits mechanic in FNQ. Today after it came to a sudden stop I looked underneath. The crank shaft pulley bolt is all the way forward and the pulley is all loose (I can freely move and twist the pulley in several directions although the seal seems intact.) I guess the bolt has sheered or perhaps just come loose. Could this have resulted from a bad job by the mechanics who changed the Timing belt 3 months ago, or is it just one of those things? I had no pre warning or sign that there was a problem.
    Do you think I'm up for a new Crank? Hope you can give me some hope as I won't know the diagnosis till I hear back from the garage that it was towed to (coincidentely the same repairer that changed the timing belt)

    Thanks for any input
    Stephen.
    Last edited by salsamania; 24-11-08, 11:32 PM.

  • #2
    Originally posted by salsamania View Post
    Hi all, 2 weeks ago I became the proud owner of my 1st 4x4 a 96 nk gls. It has done 200,000k but never off road and looks very well maintained.

    I've been glowing every day since but this afternoon 2ookm in to our relationship it died.

    I have virtually no mechanical experience myself but perhaps you could advise me anyway. It had the water pump and timing belt replaced 3 months ago by a Toyota specialist in Cairns. Today after it came to a sudden stop I looked underneath. The crank shaft pulley bolt is all the way forward and the pulley is all loose (I can freely move and twist the pulley in several directions although the seal seems intact.) I guess the bolt has sheered or perhaps just come loose. Could this have resulted from a bad job by the mechanics who changed the Timing belt 3 months ago, or is it just one of those things? I had no pre warning or sign that there was a problem.
    Do you think I'm up for a new Crank? Hope you can give me some hope as I won't know the diagnosis till I hear back from the Toyota garage that it was towed to (coincidentely the same repairer that changed the timing belt)

    Thanks for any input
    Stephen.
    I presume it's the V6, and not the diesel?

    There was a crank bolt recall on some engines, but I don't remember the details - I would expect any well maintained vehicles should have had this done by now. Call Mitsubishi with your VIN number and ask them to check if yours was affected, and been done - but I suspect NK was later than the affected vehicles.

    If your pulley is that loose I'm afraid you could have significant damage - but there's a good chance it was triggered by something done wrong during the timing belt change, so it should be the dealer's problem, and not yours. The trick will be to get the dealer to accept it.

    Good luck,

    Scott
    NT Platinum. DiD Auto with 265/70R17 ST Maxx, Lift, Lockers, Lockup Mate, Low range reduction, LRA Aux tank, bull bar, winch, lots of touring stuff. Flappy paddles. MMCS is gone!

    Project: NJ SWB. 285/75R16 ST Maxx, 2" OME suspension, 2" body lift, ARB 110, 120l tank, bullbar, scratches, no major dents. Fully engineered in SA. NW DiD & auto in place - a long way to go....

    Scorpro Explorer Box

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    • #3
      If the crank bolt came loose the way it did it is possible that he didnt re-torque it(if the mechanic had to take it off) to the proper spec when it was reassembled. When it came loose you will have probably buggered the threads going into the crank I fear. You may have gotten lucky and not had that happen but the chances are pretty slim there. Hope it works out for ya. I would def go straight back the mechanic and tell him what happened. Hopefully he is honest and trustworthy enough to own up to his mistake.
      03 NP, 34" tires, Fully skiplated, Custom rocksliders, custom winch mount, OME HD springs/shocks, and Aeroflow exhaust, Locked Front and Rear.

      Happiness is like peeing your pants, everyone can see it, but only you can feel the warmth.

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      • #4
        Well the best outcome would be the plate for the crank angle sensor is bent and caused it to stop before any serious damage was done. The worst would be that theres every chance the pully for the timing belt came off the keyway on the crank, which could inturn cause the valves to hit the pistons etc. I would imagine the crank is still fine regaurdless. It should be under warranty unless the previous owner chose not to replace the bolt.

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        • #5
          Bolt of harmonic balancer was sheared; a myth that it only happened in 3L V6 6G72 engine but in fact it affects 3.5L V6 6G74 too.

          Mechanics are blaming others for not tightening the bolt in correct torque, either too tight or not enough torque.

          To play safe, better to use a new bolt while timing belt is being changed and tightened the bolt to correct torque. Must remind your mechanics this crucial issue otherwises they tend to use the old bolt.

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          • #6
            Crank - Shafted response

            Hi All thanks for your responces,

            The Non Mits mechanic just called me to say, yes, the crank bolt came loose but the reason was because the timing belt pin had sheered off. I thought the order of things are different ie. Crank Bolt and pulley loosening causes locating dowel on the cam belt cog to sheer. (I'm assuming we are referring to the same pin). Sorry for my mechanical ignorance.

            I'm not sure if they are trying to avoid responsibility. Anyway if they just changed the timing belt 3 months ago whats the likly hood of the timing belt pin sheering now. I wish I had more faith but don't want to get stung.

            Hope you can shed some light on the subject. The mechancs said they've found the part (timing belt pin) for $145 and could go ahead with the job but the labor of course will mount up $$$.
            Last edited by salsamania; 24-11-08, 11:34 PM.

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            • #7
              Ive done more timing belts then you can poke a stick at and for the life of me cannot picture why the pin would sheer off in the first place, but more so how that would cause the bolt to come loose - sounds like a large crock of shit to me.

              On the other hand, if the bolt came loose first it makes good sense... Perhaps ask for a report in writting and get a second opionion from a third party.
              Last edited by 6G74; 24-10-07, 02:17 AM.

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              • #8
                Thanks again
                Thanks for your comment, You wrote exactly what I was thinking...
                Sounds like their Bull sh*ting me to avoid accepting responsibility for perhaps not tightening that Crank bolt during the Timing belt change 3 months ago.

                I've had very little mechanical experience but am not completely without logic.

                If I understand the Locating Pins function and the Crank Bolts function correctly. My logic tells me that when the Timing cog locating pin shears off, the 2 'cogs' may become misaligned in a rotational sense but could not separate from each other (in terms of distance) unless the Crank bolt allows them to. Ie. if it is loose.

                If so, I think it confirms the bolt was loose regardless of the pins state.

                So by the repairer stating (and I confirmed that he was actually stating this to me) that The Crank bolt became loose as a result of the locating pin shearing seems like a deliberate cover up. Assuming that this is impossible scenario.

                I've told him not to go ahead with the repair until I make a few enquiries, which I'm doing with you lot, Thanks so much for your time and experience , I've never used a forum before and really appreciate your support and knowledge.

                I will ask him for a written report as you suggested-
                Any other suggestions ??

                Thanks stephen

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                • #9
                  Are you a memeber of RACQ? Get them to do an independant assessment as well and give you a response in writing. They will probably charge for it but will be cheaper in the long run.

                  Get every bit of correspondence in writing and be very clear and reasonable with the dealer.

                  Good luck.
                  Pajero Exceed 3.8l, BFG AT 275/70, Narva Ultima 175 spots, o2 Jamin with BT GPS, O'Briens camping trailer, 2" Lift with Bilsten Shocks.

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