Edmond Posted April 24, 2015 Report Share Posted April 24, 2015 (edited) My, supposed rebuilt, gearbox has given up after 4000 miles. Among other problems, disintegrating bushes and case hardened washers that were ground down to fit and weakened as a result.Then there's the overdrive ...what turns out to be a Triumph 2.5PI unit that has had a rear case and solenoid bracket swapped to make it look like a TR It has a lot of brass going through the whole unit and whoever did it last time left an extra piston ring floating about under the accumulator assembly. It seems it's a mongrel gearbox. Can anyone identify it from the numbers stamped on the casing 306812 SM V 2947. Edited April 24, 2015 by Edmond Quote Link to post Share on other sites
peter clarke Posted April 24, 2015 Report Share Posted April 24, 2015 You are quoting the casting number of the gearbox case. The id number is stamped on Lhs of the casing on TR 2 to 4A similar to engine numbers. Same casting used on other Triumph models and numbers stamped on casing near clutch operating lever. Quote Link to post Share on other sites
peter clarke Posted April 24, 2015 Report Share Posted April 24, 2015 Club triumph have a good web page listing all model engine and gearbox numbers Quote Link to post Share on other sites
stuart Posted April 25, 2015 Report Share Posted April 25, 2015 All Triumph prefix numbers for engines/gearboxes/axles here http://club.triumph.org.uk/prefix1.htm Stuart. Quote Link to post Share on other sites
glasgow4a Posted April 25, 2015 Report Share Posted April 25, 2015 Edmond, good to hear you are still around, I can help re g/box, give me a ring, Ian Quote Link to post Share on other sites
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