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Re: [TR] Bullet nose starter ejected front bearing

To: "'Chris Simo'" <ccsimonsen@gmail.com>, "'list Triumph'" <triumphs@autox.team.net>
Subject: Re: [TR] Bullet nose starter ejected front bearing
From: "Randall" <TR3driver@ca.rr.com>
Date: Wed, 9 Sep 2015 10:41:56 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
Thread-index: AdDq/YTWFm3a90aaSpC7Qsv/vRJYdAAJppwQ
> 
> Starter wouldn't turn well and when I heard a part drop to 
> the driveway,  I pushed it back into the old garage. What was 
> underneath was the nose cover and front bearing of the starter.
> 
> Anyone else have this happen?

I haven't, but obviously something is letting the armature shift back and 
forth.  You'll have to find out why and fix it, in
addition to replacing the bushing.   Most likely candidate IMO (assuming the 
bolts are tight) is the locking ring and/or it's cover
at the drive end.  The cover has to fit snugly over the ring, to lock it into 
the groove in the shaft.

Nominal end play is only .010", max about .015"; the old Lucas Technical 
Correspondence Course talks about adding shims if
necessary.  You also want to be sure the thrust is against the housing, not 
just the bushing.

I forget which one it was, but one of the bushings was NLA from the usual 
suspects, last time I fought with an original starter.
Some quick measurements turned up a suitable substitute from MMC, though, that 
could be cut to length.  I used a drop of Loctite
"retaining compound" (RC609 IIRC) to make sure they didn't wander off again.

-- Randall  



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