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Thread: Pulley bearing?

  1. #1
    Join Date
    Aug 2012
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    Perf, WA
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    600

    Pulley bearing?

    Anyone care to watch this 10s video and confirm my suspicions of a pulley bearing problem? Comes across as an intermittent *tick* sound in the video... its more pronounced in real life.

    IMG 2410 - YouTube

    Done some water crossings recently. Sounds to me like a catching, dry bearing?

    Theres a few pulleys and bearings down there, any way of finding out which is the culprit?

    Cheers, Sam
    (2010 2.4 Puma)

  2. #2
    Join Date
    Jun 2013
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    Warner Area - SEQ
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    I'm not real sure but that doesn't sound like it a bearing problem
    Cheers.....
    Rob M


    Car-1: 1996 Discovery Tdi Auto
    Car-2: 1995 Defender Tdi 110 Wgn
    Car-3: 2009 Defender PUMA 110 Wgn
    My TRIPS: Rob's Triplogs and Trip Reports

  3. #3
    Join Date
    Jan 1970
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    Normanhurst - Sydney
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    8,559
    I'm can't tell from the video either but once you've got the fan and belt off it's not too hard to check all of the idler pulleys.
    I've even prised the little plastic bits off each side of the bearings, washed them out, regreased them and refitted. Still going OK 45k kms later.
    Probably worth doing just to eliminate one possibility.
    Roger



    "Experience is something you don't get unless you have a go."

  4. #4
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    Aug 2012
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    Ok thanks, I might do that. The noise is definitely coming from some belt (or fan?) related component…

    Years ago I had an intermittently binding CV joint that sounded very similar

  5. #5
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    Quote Originally Posted by Samblers View Post
    Ok thanks, I might do that. The noise is definitely coming from some belt (or fan?) related component…

    Years ago I had an intermittently binding CV joint that sounded very similar
    Can't be of much help diagnosing but doesn't sound like a bearing - my tensioner pulley bearing disintegrated a couple of months ago and that sounds more akin to a burst intake hose (a whooshing sound almost). My belt had also moved across and was rubbing the block due to the broken bearing

    You'd be hearing it more frequently than an odd knock given those bearings spin at such high RPMs

    Can you see what the tensioners doing? Maybe pull the cowling off, the AC cover etc and run it. As above mentioned just detension the belt and have a spin of all the pulleys. Hold a long screwdriver to your ear and touch it on the different components (AC compressor, diff pulleys) carefully and might be able to zero in on the noise

  6. #6
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    Perf, WA
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    Thanks, input appreciated. I'll have a go at that and report back.

    Cheers, Sam

  7. #7
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    Apr 2018
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    Quote Originally Posted by Samblers View Post
    Thanks, input appreciated. I'll have a go at that and report back.

    Cheers, Sam
    Just had another listen... it almost sounds like something could be clipping the viscous fan under the cowling?... Like something flicking into it periodically as the wind picks it up although buckley's as to what that could be... Just an idea which will be quickly and easily identified by just undoing those six screw clips and pulling the cowling off if so

  8. #8
    Join Date
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    Harper Creek
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    3,444
    It’s not the silly turbo heat shield at all is it ?
    Loose nut / broken mount allowing intermittent tapping against the mounts ?


    I agree with above that it doesn’t sound like a pulley
    But if your game the quickest way to check the pulleys is to slip the belt off on a cold engine and turn it over … won’t kill the engine with the water pump not turning for 10 seconds


    Steve
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  9. #9
    Join Date
    Aug 2012
    Location
    Perf, WA
    Posts
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    Thanks both, great suggestions, I’ll get onto it this weekend

    Cheers, Sam

  10. #10
    Join Date
    Apr 2015
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    Hervey Bay
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    I had that kind of noise in our FL2. Does the noise go away when it heats up?

    It ended up being the alternator pulley clutch in my instance. (I'm not sure if a Defender has the clutch).
    04 L322 Vogue V8 - Work truck
    07 Freelander 2 TD4 SE - The wifes
    74 Leyland P76 Targa Florio - Aspen Green - project
    91 Kawasaki GPZ900R
    96 Seadoo HX Jet Ski

    Previous LRs = 78IIa series - 81, 93, 95 RRC - D2V8

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