First motion shaft gear removal
First motion shaft gear removal
Author
Discussion

Skyedriver

Original Poster:

21,950 posts

303 months

Saturday 11th October 2008
quotequote all
Sorry, me again.
It has been suggested that I should remove the first motion shaft gear from my old gearbox and fit it to the replacement one as it may be a matched set wih the idler gear and I can see the logic of keeping them together but: how the H do you lock the shaft to undo the nut. The manual says put it into first and top. I couldn't even do that with the gearstick and a heavy clutch foot.....
Regards
Tony H

guru_1071

2,768 posts

255 months

Sunday 12th October 2008
quotequote all
tony

there are two ways

1) the 'dirty' way.

get an old idler gear and weld a bit of angel iron across it so that it rests on the top egde of the gearbox (no engine), this stops the gearbox turning when you undo the nut.

2) the 'correct' way

remover the diff housing and the diff. then turn the little rod that selected the gears until the selector dog is not engaged into the selector bell cranks. once that is free you can knock the 1/2 synco into 1st and the 3/4 syncro into 4th - dont be tempted to use 2nd or 3rd for this as some gear kits have a funny torque muliplying affect and will pull the teeth off the laygear as you start to undo the nut. once the box is locked in 1st and 4th you can undo the nut. dont be tempted to use windy guns to shock the nut off as this can damage stuff, rather a correct sized socket and a decent bar (plus a good method to stop the box tipping over) will undo it in no time)

easy ;-)

Skyedriver

Original Poster:

21,950 posts

303 months

Sunday 12th October 2008
quotequote all
guru_1071 said:
tony

there are two ways

1) the 'dirty' way.

get an old idler gear and weld a bit of angel iron across it so that it rests on the top egde of the gearbox (no engine), this stops the gearbox turning when you undo the nut.

2) the 'correct' way

remover the diff housing and the diff. then turn the little rod that selected the gears until the selector dog is not engaged into the selector bell cranks. once that is free you can knock the 1/2 synco into 1st and the 3/4 syncro into 4th - dont be tempted to use 2nd or 3rd for this as some gear kits have a funny torque muliplying affect and will pull the teeth off the laygear as you start to undo the nut. once the box is locked in 1st and 4th you can undo the nut. dont be tempted to use windy guns to shock the nut off as this can damage stuff, rather a correct sized socket and a decent bar (plus a good method to stop the box tipping over) will undo it in no time)

easy ;-)
Rich,
this all sounds rather more than I want to do, to a box I am putting in on exchange, will speak to suppliers tomorrow.
Also I am dropping you a line
Regards
Tony H