separating j type overdrive from gearbox

[boiler]

Hello to all.

I have removed gearbox from the car to replace the clutch. I am in the process of removing the j type overdrive from the gearbox but it doesnt seem to want to come off. should this just pull off after removing the bolts or is there some procedure to follow, All help and suggestions would be appreciated. Thanks.

[nang]

Once had an A type that did it to me. 

When I finally levered it off found splines on the main shaft were twisted. Hope J types don't do this. especially yours  🙁

Tony.

[Radders]

Undo the bolts for the gear selector plate on the top of the gearbox. It sometimes compresses on the overdrive and stops it from releasing. 

[Pete Lewis]

once youve broken the grip of the gaskets it should be a simple pull it off.

J type refit better tan Dtype but to realign the inards use two decent screwdrivers to lever the piton plates open this frees the cone and all just drops back on . do keep the drivers and fingers out the way when it drops 

Jtype have a chamfer on the lead to the pump roller but position the cam at its lowest helps

Pete

[Guppy916]

Please why remove the o/d just to replace the clutch ??

[boiler]

Thanks for all your replies. I managed to get the overdrive unit off just after this post. I was only going to replace the clutch but with the gearbox out decided to tackle some noisy bearings and oil leaks.(note to self; leave things alone in future)

[Pete Lewis]

the top two studs have to be sealed and copper washers or you pump a leak.

if fact  seal everyting.  i like loctite 574 for all face joints  brilliant stuff

pete