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Jul 12, 2011 11:30 am
Jul 12, 2011 11:30 am
Subject: Re: G9 gearbox
Hi Peter,
Sounds like you have been lucky with your finds!
3rd gear problem
This is a usual problem and it is generally incurable without considerable expense but do as follows.
The problem is usually caused by the dog teeth that engage into 3rd to make it engage wearing at an angle, this angle then forces it out of gear harder and harder with the more power you feed in! Quite often this is caused initially by worn bronze bearings but as the teeth wear also the problem is compounded!
The only thing (simple) to do to cure this is to re-make all the bronze bushes for the sliding gears in the box and make sure all shafts etc are in tip top condition and then re-assemble as carefully as possible. Set the detent springs a little harder but don't over do it! and make sure that the gears are going fully into engagement! the selector rods and detent groves are often not correctly set and often need re-making!
Good luck.
Julian
Hi Peter,
Sounds like you have been lucky with your finds!
3rd gear problem
This is a usual problem and it is generally incurable without considerable expense but do as follows.
The problem is usually caused by the dog teeth that engage into 3rd to make it engage wearing at an angle, this angle then forces it out of gear harder and harder with the more power you feed in! Quite often this is caused initially by worn bronze bearings but as the teeth wear also the problem is compounded!
The only thing (simple) to do to cure this is to re-make all the bronze bushes for the sliding gears in the box and make sure all shafts etc are in tip top condition and then re-assemble as carefully as possible. Set the detent springs a little harder but don't over do it! and make sure that the gears are going fully into engagement! the selector rods and detent groves are often not correctly set and often need re-making!
Good luck.
Julian