Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: Crankshaft cover bolt(s)-question dealer can't answer!  (Read 2687 times)

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  • Offline earthman   gb

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    Crankshaft cover bolt(s)-question dealer can't answer!
    on: Aug 05, 2019, 04.20 pm
    Aug 05, 2019, 04.20 pm
    Maybe someone who's done the 20k timing check/valve adjustment can answer this one? The 8 bolts that hold the right hand crankshaft cover on, did you replace just one of them (item no.2, top right of diagram) or all of them?
    If it's just the one, why is that, what else may it be holding/going into i'm wondering? The dealer can't even provide an answer. :164:

    Another odd thing, no mention of a gasket between this cover and the engine casing, there is certainly one, I've just bought it. 


  • Offline janfmiller   us

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #1 on: Aug 05, 2019, 08.26 pm
    Aug 05, 2019, 08.26 pm
    I don't replace any of the external low-torque 'patch-locked' bolts, I just use blue locktite on them. 

    Yeah, yeah, I know the theories about thread stretch, etc. 

    If they were inside the engine or in a critical place I'd renew them.
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  • Offline earthman   gb

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #2 on: Aug 05, 2019, 08.51 pm
    Aug 05, 2019, 08.51 pm
    *Originally Posted by janfmiller [+]
    I don't replace any of the external low-torque 'patch-locked' bolts, I just use blue locktite on them. 

    Yeah, yeah, I know the theories about thread stretch, etc. 

    If they were inside the engine or in a critical place I'd renew them.

    You are not alone, the dealer told me that their technicians actually reuse all the fasteners, camshaft bolts too, using some liquid locktite even on those critical bolts. :005:

  • Offline Coconut   gb

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #3 on: Aug 05, 2019, 09.32 pm
    Aug 05, 2019, 09.32 pm
    Another odd thing, no mention of a gasket between this cover and the engine casing.....

    Another marvel of the Triumph Publications Department !

    In their wisdom, they have included the information
    in Chapter 5 - Crankshaft, Connecting Rods and Pistons ( Page 5.21 ) :

    Crankshaft Cover

    Removal
    ......

    5.  Remove the crank cover. Discard the patch-locked bolt and gasket.

    .... and again on Page 5.22 :

    Installation

    2. Position a new gasket to the crankcase dowels.

    It seems they haven't copied and pasted all of the information to the Chapter you were reading,
    or annotated the "Remove the right hand crankshaft cover..." with "See Page 5.21" !  :015:

    An image of the gasket is shown in the exploded drawing on Page 5.4

    Cheers  :821:


    Last Edit: Jan 07, 2020, 06.56 pm by Coconut

  • Offline earthman   gb

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #4 on: Aug 05, 2019, 10.06 pm
    Aug 05, 2019, 10.06 pm
    Well spotted, the manual isn't that well laid out is it. :084:

    Still wondering why they pick on just that one bolt rather than all of them,...makes me think that it must be holding something else but maybe not? :187:

  • Offline Jeffb   us

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #5 on: Aug 06, 2019, 04.38 am
    Aug 06, 2019, 04.38 am
    I just did the 20K service, and I didn't see any reason that that particular bolt is the one and only one that's patch-locked. I just made the assumption that in case the other 7 should vibrate out and you didn't notice it, at least the one would keep you from losing the cover. (In other words, I couldn't figure it out either. :017:) I did buy the bolt, because I didn't know. Next time I won't.

  • Offline earthman   gb

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #6 on: Aug 06, 2019, 07.16 am
    Aug 06, 2019, 07.16 am
    Thanks Jeffb, the thought of all those other bolts vibrating loose did cross my mind too, more chance of winning the lottery hey. Lol

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    Re: Crankshaft cover bolt(s)-question dealer can't answer!
    Reply #7 on: Sep 22, 2019, 12.51 am
    Sep 22, 2019, 12.51 am
    All other bolts have ‘dead’ threads. This one is the only one wich is directly connected to the carter behaind is. That means there is oil behing it wich can creep through the thread into the outside world
    . Therefore there’s a oil blocking loctite on it. Not to secure it but to prevent it from leaking oil

     



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