South Wales Trail Riders

    Timing Chain replacement KTM 400 EXC

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    Portboy29

    Posts : 374
    Join date : 2010-05-29
    Age : 66
    Location : IOW

    Timing Chain replacement KTM 400 EXC

    Post by Portboy29 on Sat Sep 04, 2010 8:08 pm

    Anybody had the pleasure of renewing their timing chain ? I would appreciate a brief run through if at all possible, rads off, valve covers off, alternator cover and crankshaft main nut removed looks like a puller job for flywheel as far as I have got. RSVP
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    Tilts

    Posts : 2693
    Join date : 2010-01-26
    Age : 43
    Location : Long way from home.

    Re: Timing Chain replacement KTM 400 EXC

    Post by Tilts on Sat Sep 04, 2010 9:15 pm

    Posted your thread on a KTM fourm, ill copy and paste any comments left.




    1.TDC, cut chain, join new chain to old and turn engine,join new chain (tensioner removed).

    2.I've just done this job on my mates 02 400. Tappett adjuster nut came off and got itself wedged between chain and cam sprock, bent a couple of the side plates on the chain , so we changed it for a nice new one.
    Exactly as said above. When you come to put it back together, I'd put new water pump seals in while you're there. Disturbing them seems to upset them. And the centre retaining bolt in the rocker cover needs to be fitted in its hole before you put the cover in place - theres no room under the frame rail to get it in once its fitted. Apart from that its pretty simple.

    And dont forget to tighten the lock nuts when you set the valve clearances!!!!


    Last edited by Tilts on Sun Sep 05, 2010 9:44 am; edited 1 time in total
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    chamber66

    Posts : 1297
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    Location : jack land

    Re: Timing Chain replacement KTM 400 EXC

    Post by chamber66 on Sat Sep 04, 2010 10:43 pm

    Portboy29 wrote:Anybody had the pleasure of renewing their timing chain ? I would appreciate a brief run through if at all possible, rads off, valve covers off, alternator cover and crankshaft main nut removed looks like a puller job for flywheel as far as I have got. RSVP
    You are forgetting petrol and a match ❤
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    Portboy29

    Posts : 374
    Join date : 2010-05-29
    Age : 66
    Location : IOW

    Re: Timing Chain replacement KTM 400 EXC

    Post by Portboy29 on Sun Sep 05, 2010 7:26 am

    Chambers, Go Orange you it makes sense !
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    chamber66

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    Re: Timing Chain replacement KTM 400 EXC

    Post by chamber66 on Sun Sep 05, 2010 8:01 am

    Portboy29 wrote:Chambers, Go Orange you it makes sense !

    Not for me that's why i'm selling my KTM great bike and does everything i could want. But I just don't love it or get excited about riding it. And Steve would never forgive me if i bought another Laughing
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    Portboy29

    Posts : 374
    Join date : 2010-05-29
    Age : 66
    Location : IOW

    Re: Timing Chain replacement KTM 400 EXC

    Post by Portboy29 on Sun Sep 05, 2010 8:36 am

    Hey, variety is the spice of all life, you enjoy, it looks a cracker, being old skool i cant do 2smokes. But you'll be back.
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    chamber66

    Posts : 1297
    Join date : 2010-01-29
    Location : jack land

    Re: Timing Chain replacement KTM 400 EXC

    Post by chamber66 on Sun Sep 05, 2010 8:38 am

    Don't think I will ever do the 4t thing again. But you never know
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    Portboy29

    Posts : 374
    Join date : 2010-05-29
    Age : 66
    Location : IOW

    Re: Timing Chain replacement KTM 400 EXC

    Post by Portboy29 on Sun Sep 05, 2010 1:48 pm

    Are all single row cam chains the same pitch and width ? Have'nt got a KTM dealer over here but we got yam,suzuki, honda, triumph . Would instant gasket type sealant do for valve cover and and flywheel case ?
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    Tilts

    Posts : 2693
    Join date : 2010-01-26
    Age : 43
    Location : Long way from home.

    Re: Timing Chain replacement KTM 400 EXC

    Post by Tilts on Sun Sep 05, 2010 8:36 pm

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    Portboy29

    Posts : 374
    Join date : 2010-05-29
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    Location : IOW

    Re: Timing Chain replacement KTM 400 EXC

    Post by Portboy29 on Sun Sep 05, 2010 8:41 pm

    cheers nip

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