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Texas77
 Post subject: Tolerance
PostPosted: Mon Dec 19, 2011 5:31 pm 
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Joined: Fri Sep 30, 2011 10:46 am
Posts: 19
what is the axial tolerance for the 1975 MT250 piston rod?
I've got a little play in the rod but not sure of the tolerance
and don't want to tear the whole thing down if not necessary!
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woosh
 Post subject: Re: Tolerance
PostPosted: Mon Dec 19, 2011 9:01 pm 
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Joined: Sat Dec 01, 2007 3:03 pm
Posts: 265
Parts are nla so before you tear into it try looking for them first. I rebuilt my mt250 crank with parts from badbrush.com but dont know that they are around anymore.
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woosh
 Post subject: Re: Tolerance
PostPosted: Mon Dec 19, 2011 9:07 pm 
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Posts: 265
.02-.04mm is normal and .06mm is the service limit.
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Texas77
 Post subject: Re: Tolerance
PostPosted: Tue Dec 20, 2011 8:52 am 
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Posts: 19
That's a 1/16th! Is that at the top of the rod?
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woosh
 Post subject: Re: Tolerance
PostPosted: Tue Dec 20, 2011 5:21 pm 
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Posts: 265
As far as I know its at the top thats where I have always checked it.
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Texas77
 Post subject: Re: Tolerance
PostPosted: Tue Dec 20, 2011 5:44 pm 
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Posts: 19
I checked it and it's less than 1/16 of an inch. Like .048 thousandths. Should that be o.k.?
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Texas77
 Post subject: Re: Tolerance
PostPosted: Tue Dec 20, 2011 5:45 pm 
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Joined: Fri Sep 30, 2011 10:46 am
Posts: 19
And no up and down slop.
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