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Got a warning about my noises!?

Discussion in 'XJ Technical Chat' started by randall68, Jul 29, 2008.

  1. randall68

    randall68 Member

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    I saw a friend over the weekend and let him drive the 750 Maxim. He cam back and told me not to drive the bike because the chain noise and high pitched whine meant the chain was about to go? So now I'm thinking about what is going on with the chain. I have looked at the chain which appears to be fine and the bike has 21,000 miles on it. Is a "high pitched whine" normal?
    And the loudest chain noise happens when the bike is cold and idling lower and rougher, before fully warmed up.
     
    randall68, Jul 29, 2008
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  2. low-1-5-0

    low-1-5-0 Member

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    cam chain?
     
    low-1-5-0, Jul 29, 2008
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  3. randall68

    randall68 Member

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    Yes, cam chain.....
     
    randall68, Jul 29, 2008
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  4. stereomind

    stereomind Active Member

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    high-pitched whine probably has nothing to do with the cam chain. it's more likely coming from the constant mesh gears in the tranny where the power is transferred to the driveshaft. that's the Yamaha Shaftie Whine (TM).

    I believe the gear lash can be somehow adjusted but it looks pretty involved... I'm kinda used to mine :-D


    how many miles on the Max?
     
    stereomind, Jul 29, 2008
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  5. low-1-5-0

    low-1-5-0 Member

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    a slight stretch in the chain can throw it off, could also be the tensioner...you don't want that letting go going down the highway...
     
    low-1-5-0, Jul 29, 2008
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  6. bill

    bill Active Member

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    Does he have experience with shafts? There is always a middle gear whine. Check you cam chain tension and if it's OK there is not much need to worry.

    On my xj650 between chain whiring noise and valves tapping it sometimes sounds like I'm riding a sewing machine but my chain is fine as are the valves. I actually like the whine - this is my second shaft bike.
     
    bill, Jul 29, 2008
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  7. randall68

    randall68 Member

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    I had the cam tensioner out when I did the head gasket and it seemed fine. However when I was back under the valve cover a short time ago I pulled on the chain and got slack. So maybe I need to pull the tensioner back out and make sure it's ratchet is not moving back in.
     
    randall68, Jul 29, 2008
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  8. bill

    bill Active Member

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    I checked mine the other day and could not pull any slack. so you may be on the right path.
     
    bill, Jul 29, 2008
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  9. randall68

    randall68 Member

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    Now if i can just get the thing off, I had the carbs off before and it was still tough. Not sure if I can even get to it now.
     
    randall68, Jul 29, 2008
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