[TR] J type overdrive rebuild

[Randall]

> I'm rebuilding an unknown gearbox with OD do I really need to split it and
> get into the mechanical part or should changing out all the  the O rings
> be sufficient?

IMO it is impossible to adequately clean and inspect the components without
removing the annulus from the housing.  And I would not be willing to skip
that step for an "unknown" gearbox; especially given what a PITA it is to
R&R the gearbox on a Stag.

Just to give you some idea of what can be lurking, here's what someone on
another forum found in his "good functioning" J-type
http://www.triumphexp.com/phorum/read.php?2,1428633,1442980#msg-1442980

As it happens, it takes only a tiny bit of dirt or swarf to jam the dashpot,
which can potentially lead to the OD engaging in reverse and doing major
damage to itself.  I can't explain how it got past the magnet and through
two levels of screen, but I don't know how else it got in there either.

> I don't have any specialist tools.

Again IMO, Either get some, or take the job to someone who has the right
tools.  There's a good series of articles that shows how to build them at
http://www.buckeyetriumphs.org/technical/jod/JOD1/JOD1.htm

If you don't feel like building the pressure gauge adapter, buy one from
Jay:
http://webspace.webring.com/people/tj/jholekamp/

-- Randall 
56 TR3 TS13571L daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild