Overdrive removal

[cmdr19]

Faced with the possibility of replacing the o/d (J type), does anyone know of a good reason why it shouldn't be possible to remove/replace just the overdrive unit without removing the gearbox assembly? On lesser cars sure, but with the TR's wonderful access to eveything from above it looks as though unbolting one from the other they should slide apart.

 

Apart from anything else the gearbox/ clutch are fine and I'm sort of in the 'if it ain't broke' frame of mind. i would be glad to hear anyone's thoughts or better yet, someone who's done it with the pitfalls to look out for.

 

Thanks

 

Mike

[peejay4A]

Mike, I think removal is not so much of a problem. My experience with my A-type O/D is that I replaced it on the bench in an upright position which avoids the springs moving out of place and makes lining the splines up easier. Also there's the oil pump cam to keep out of the way with some string (I used garden wire) until the gearbox and O/D are nearly fully mated.

 

If it were me I'd have the gearbox and O/D out as a unit.

[rpurchon]

Faced with the possibility of replacing the o/d (J type), does anyone know of a good reason why it shouldn't be possible to remove/replace just the overdrive unit without removing the gearbox assembly? On lesser cars sure, but with the TR's wonderful access to eveything from above it looks as though unbolting one from the other they should slide apart.

 

Apart from anything else the gearbox/ clutch are fine and I'm sort of in the 'if it ain't broke' frame of mind. i would be glad to hear anyone's thoughts or better yet, someone who's done it with the pitfalls to look out for.

 

Thanks

 

Mike

 

yes you will be able to remove the od in situ.comletley different to a A type. a lot easier

make sure its been disengaged NOT underload or it WILL be difficult to seperate.

otherwise just the gaskets holding it all toghether.

richard

[cmdr19]

yes you will be able to remove the od in situ.comletley different to a A type. a lot easier

make sure its been disengaged NOT underload or it WILL be difficult to seperate.

otherwise just the gaskets holding it all toghether.

richard

 

Very encouraging, the J type is different (or so the manuals say) in that there don't appear to be any springs etc between g/box & O/d that would try and make a break for freedom when separated.

 

As the O/d doesn't currently work I am assuming we can consider it dis-engaged. If it's a matter of just matching up the splines, doesn't sound too difficult.

 

Why am I bothering - well my nearest specialist is probably 800miles away. Living in sunny SW France does have it's drawbacks when you need help like this!

 

Thanks all

 

Mike

[rpurchon]

Very encouraging, the J type is different (or so the manuals say) in that there don't appear to be any springs etc between g/box & O/d that would try and make a break for freedom when separated.

 

As the O/d doesn't currently work I am assuming we can consider it dis-engaged. If it's a matter of just matching up the splines, doesn't sound too difficult.

 

Why am I bothering - well my nearest specialist is probably 800miles away. Living in sunny SW France does have it's drawbacks when you need help like this!

 

Thanks all

 

Mike

 

yes there are no springs to fall out.

the overdrive will be disengaged.but if it switched out under hard accelerartion or deceleration it will be a pig to remove.

before removing from the car.try wiring the solenoid directly to posotive supply. make sure the earth wire is still fitted also.

[can you here it clicking without engine running]if not. try a new solenoid first.

try cleaning both the filters out.last resort would be to remove fom car.

richard

[cmdr19]

yes there are no springs to fall out.

the overdrive will be disengaged.but if it switched out under hard accelerartion or deceleration it will be a pig to remove.

before removing from the car.try wiring the solenoid directly to posotive supply. make sure the earth wire is still fitted also.

[can you here it clicking without engine running]if not. try a new solenoid first.

try cleaning both the filters out.last resort would be to remove fom car.

richard

 

As I can recall, I switched the o/d off whilst driving along normaly. I guess i'll only find out when I try & serarate the two.

The solenoid does click in & out on command ( I have removed it once and checked it visually as well), so I know its not that. I've got a new pressure filter so that will be the next thing to try before deciding (or decision made for me)to remove the o/d.

 

Thanks for the info Richard.

 

Mike