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Thread: Help ID this driveline noise- unbalanced propshaft or something else?

  1. #11
    Join Date
    May 2014
    Location
    Tamworth NSW
    Posts
    4,228
    30% grade, rocky climb of approx 1500m (with drainage plateaus). 2nd low, 3K RPM, right on torque. Car loaded with approx 150KG luggage and 2 passengers.
    Heard snap, lost drive. Grabbed reverse low, dumped clutch for self recovery using engine braking- nothing happens.
    Oh****.jpeg
    Stomped anchors, ABS did the puma thing and barely worked (coupled with plenty of weight on the rear wheels rendering steering almost non-existent).
    Car slides back, with an increasing side angle to the perpendicular path up the hill.
    Feel tyres slide, now looking at the side of the track thru front window. RHS wheels get light as LHS suspension loads up.
    Come to stop, things have stabilised, but ****ty angle. Passenger is none too impressed.
    Get straight again with help of another car and winch, double line pull. 8 or so meters up to level section.
    Pull rear tailshaft to isolate rear diff. Attempt FWD only- crackling and carrying on from the front. now, In the last 10 minutes, I've seen my life and my wallets life flash before my eyes.
    Attempt the 'screw it, just do it' approach, and use what little drive the front diff offers to get me moving.
    Recover on winch rearwards down the slope to next flat.
    Turn around with great commotion from the front end, on the 4m section available to me. Then lose all drive entirely.
    Get bump from rear (bullbar to spare tyre), and get lowered the rest of the way down on 30m tow strap.
    Last remaining steps, use wheel braked only and momentum / potential energy of my now anchor of a car.
    Pulled to the road the last 300m with tow strap and 1low from another defender.

    Flat tray tow from road 70km to home, in backyard now, post mortem has commenced. Rear is FUBAR'd.

    P1000082.jpg
    -Mitch
    'El Burro' 2012 Defender 90.

  2. #12
    rick130's Avatar
    rick130 is offline Moderator Silver Subscriber
    Join Date
    Jan 1970
    Location
    NSW far north coast
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    16,960
    Bugger.

    Oh well, time for a locker Help ID this driveline noise- unbalanced propshaft or something else?

  3. #13
    cuppabillytea's Avatar
    cuppabillytea is offline Loud Mouthed Rat Bag Gold Subscriber
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    Apr 2015
    Location
    Lillyfield NSW
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    Dittto
    Cheers, Billy.
    Keeping it simple is complicated.

  4. #14
    rick130's Avatar
    rick130 is offline Moderator Silver Subscriber
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    Jan 1970
    Location
    NSW far north coast
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    Mitch, had the pin done the usual, flogged the carrier bore out letting the spider gears walk and jam?

  5. #15
    Join Date
    May 2014
    Location
    Tamworth NSW
    Posts
    4,228
    I'm no expert, but that's the diagnosis.
    No sign of the circlip (yet to dig thru the oil and case)- there are a few tooth marks in the centre as it impacted with force as things bound up.
    Few chips off the ring, pinion looks in ok condition from what I can see, but will assess once it's out.
    -Mitch
    'El Burro' 2012 Defender 90.

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