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300TDi Squeeling belt 'Penny Trick'

Discussion in 'Common Faults and Questions' started by battenberg, Oct 7, 2008.

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  1. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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  2. Mowog73

    Mowog73 Member

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    Thanks for the link; I was at fourby's website yesterday. I was hoping for a manufacturer's bearing part number so that I could source locally (Canada). RC991 doesn't look like a manufacturer's bearing part number.
     
  3. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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    try err4708 bearing
     
  4. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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  5. Mowog73

    Mowog73 Member

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    Thanks, found it: 62032RSC3
     
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  6. ogb

    ogb Active Member

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    I got 2 of these for the spares box and tried to use one a while back. I found it quite loose fit in the tensioner, so much that I didn't trust it and tried the other one with the same result. Tried 'em both in an old tensioner with the same result, so it's the bearing that's very slightly undersized. I'm not a professional, so maybe I'm being over-cautious, but a bearing cage spinning in the tensioner can't be good..or will friction heat it up enough to stop it moving?
     
  7. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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    Use Loctite 641 - Medium Strength Bearing Fit Retainer 10ml

    LOCTITE 641 is designed for the bonding of cylindrical fitting parts, particularly where disassembly is required for servicing operations. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. Ideal for parts that need subsequent dismantling, i.e. retention of bearings on shafts and in housings.

    Retaining Compound - medium strength. If disassembly is required. Ideal for parts that need subsequent dismantling.
     
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  8. ogb

    ogb Active Member

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    Ta. Something else for the shelf...owning a Landy needs a lot of storage space.
     
  9. towsey956

    towsey956 Active Member

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    I've been going thru the motions with this one, the penny trick worked but then made it worse after a while and I'm now running a gates belt and no penny with a nearly new tensioner

    By the way I've also noticed the 2 dayco belts I've bought to try and cure this are nowhere near the quality of the dayco belt that came on the vehicle, but it's now unfortunately knackered tho...do dayco do 2 ranges of belts, not that I've heard of this???

    I was wondering tho...when everything was off I noticed some slop in the water pump bearing, and when it's all back together the belts seem to have quite a lot of tension, so could it be that the amount of tension provided by the tensioner is pulling down on the water pump pulley and adding to the problem???

    Has anyone had the squeel and just changed the water pump and noticed any improvement???
     
  10. ogb

    ogb Active Member

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    No, but I had The Squeal, added the penny and a few miles later had the water pump drive shear..
    I think all of these symptoms are an indication of something going wrong, but it's a bit of a lottery to track down the culprit(s). As a result of 2 annoying experiences I now carry amongst other things a spare belt tensioner (with a tight bearing), water pump (with gaskets and new bolts) and a short belt that allows me to bypass the alternator.
     
  11. towsey956

    towsey956 Active Member

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    Thanks for that, well in that case it's having a new pump! I do think that the amount of pressure applied by the tensioner that close to the water pump is having a downward effect on those bearings, which like you say all adds up to one thing...failure

    Towsey
     
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