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Sylinder head bolts and nuts
Posted: Wed Jun 29, 2011 10:15 pm
by TomiF
I had sylinder head removed and installed back, so I'm asking if I need to retighten sylinder head bolts and nuts after running the engine a while or is it enough that they have been tightened once.
Re: Sylinder head bolts and nuts
Posted: Wed Jun 29, 2011 10:40 pm
by Mincehead
If they are torqued down correctly you shouldn`t need to recheck them.
Re: Sylinder head bolts and nuts
Posted: Wed Jun 29, 2011 11:09 pm
by TomiF
Nuts are tightened to 40nm (haynes) with torque wrench if that is the english word for the tool and bolts to 10nm.
Re: Sylinder head bolts and nuts
Posted: Thu Jun 30, 2011 12:32 am
by Mincehead
Sounds about right but you can always check out Mr Yamaha`s specs for torque values here:
http://trx850.motomaniac.net/forum/view ... f=47&t=595
Re: Sylinder head bolts and nuts
Posted: Thu Jun 30, 2011 8:15 pm
by TomiF
Thanks! Got it running today for a while and it rattled like a bitch until it stopped with a noice.. It seems that camchain tensioner didn't work properly and chain may have jumped or something. I don't have time to open it again now but lets keep fingers crossed that there wasn't too much damage done.