Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: Death Rattle  (Read 3111 times)

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  • Offline raymondt1965

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    Offline raymondt1965

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    Death Rattle
    on: Oct 15, 2020, 02.19 pm
    Oct 15, 2020, 02.19 pm
    Gentlemen:
                      My bike makes a distinct rattle at times when idling. I do not know what is it, or where it is coming from. I did notice the other day when cleaning it, that there is a similar noise from the drivetrain lash when moving the rear wheel back and forth on the center stand.
                     Is this a normal three-cylinder Triumph thing, or do I have a loose cam chain or something? The bike seems to run great and had its 20k service within the last 1000 miles.
                      Thanks again Guys!

  • Offline Saddle Tramp   us

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    Offline Saddle Tramp

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    Re: Death Rattle
    Reply #1 on: Oct 15, 2020, 02.27 pm
    Oct 15, 2020, 02.27 pm
    If its only at start-up, it's likely a weak cam chain tensioner, which is a common problem.
    If it continues once the engine has warmed up, it may need attention.
    If it's the latter situation, I am surprised your mechanic didn't address it at the recent service.
    My Triumph mechanic addressed the former issue on my Trophy at my 20k mile Service by replacing the cam chain tensioner under warranty, with the comment that the issue would likely return in another 10k miles or so. Sure enough, now that I have over 30k miles on the odometer, the rattle has returned on a cold start-up. It never lasts more than a few seconds, and according to my mechanic, I best get used to it unless I want to replace the tensioner frequently.
    Last Edit: Oct 15, 2020, 02.33 pm by Saddle Tramp
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  • Offline raymondt1965

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    Offline raymondt1965

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    Re: Death Rattle
    Reply #2 on: Oct 15, 2020, 04.23 pm
    Oct 15, 2020, 04.23 pm
    It is not only at start-up but on and off when idling. Does this engine have an automatic or manual cam chain tensioner? By the way, that was just a guess, possibly it is just the drive train rattling when not under load? Not used to being able to hear so much within the quiet reflective bubble of the cockpit and the quiet exhaust.

  • Offline GavJ

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    Offline GavJ

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    Re: Death Rattle
    Reply #3 on: Oct 15, 2020, 06.24 pm
    Oct 15, 2020, 06.24 pm
    Mine rattled at idle but was quieter when I pulled the clutch lever in......

  • Online Coconut   gb

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    Re: Death Rattle
    Reply #4 on: Oct 15, 2020, 09.00 pm
    Oct 15, 2020, 09.00 pm
    It's a hydraulic Tensioner which automatically adjusts up as necessary,
    but after a few thousand miles it seems that they can be prone
    to not holding their oil pressure when left standing, and it can take a few seconds
    to pressurise again, during which time the Cam chain can make a pronounced clatter.

    There is a reference in the Service Manual ( Chapter 3, Page 11 )
    for removal of the Hydraulic Tensioner, and its subsequent refitting :

    Note:

    After fitting to the engine, the hydraulic tensioner will be empty of engine oil.
    After starting the engine, the camshaft drive chain and tensioner blade
    will be noisy until full oil pressure is felt at the tensioner plunger.
    This could take up to 5 seconds.


  • Offline raymondt1965

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    Offline raymondt1965

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    Re: Death Rattle
    Reply #5 on: Oct 15, 2020, 09.25 pm
    Oct 15, 2020, 09.25 pm
    Thanks, Guys! Maybe at some point when I have all the bodywork off, I will look more closely for the source of the clatter. Does not sound serious if it is the cam chain. In the old days, you could adjust them from outside the engine.
    The Dealer put Power1 4T 10w-50 in her. Possibly changing to a 20W-50 might help if it is a hydraulic adjuster.

  • Offline STJIM

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    Offline STJIM

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    Re: Death Rattle
    Reply #6 on: Dec 13, 2020, 01.54 am
    Dec 13, 2020, 01.54 am
    Mine quiets down considerably when the clutch is pulled in when on the center stand, in neutral.

    I notice this right after I bought the bike a few months ago.   I thought it was a serious problem at first.   I contacted a friend who has a 2013 Explorer XC with the similar engine as the TTSE.  He told me this is a common issue.  He has 50K miles on his XC and it hasn't got any worse, so I'm not concerned, but it is a strange noise.

    On another Forum, ( XC Forum, if I recall correctly ) the consensus is it's the gears moving around on one of the gear shafts when unloaded ( not in gear ).
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  • Offline raymondt1965

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    Offline raymondt1965

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    Re: Death Rattle
    Reply #7 on: Dec 31, 2020, 03.52 pm
    Dec 31, 2020, 03.52 pm
    Yes, it does kinda sound like heavy solid items knocking around down in there. I am inclined to believe something in the drive train as you have indicated. If I ever take the time to strip off the fairings I may pull the cam chain tensioner out and inspect and clean it, but I do not believe that is what is making the noise. Thanks, everyone for your input.
    By the way, after reading of all the failed shifters I pulled mine apart, inspected, cleaned and lubricated it. I really do not see why this would fail. It seems solid enough. I suppose if the retaining screw backs out it could be a problem. I wonder if people are standing on it with all their weight or something?