Manual gearbox J type O/D leak

[Rabd]

Been trying to trace the source of a minor but irratating gearbox leak. Its not the output seal as i originally suspected, could be speedo drive so replaced o-ring and seal but now suspect either the rectangular filter access plate - easy fix? OR the gasket between the last casing (speedo drive case) and the O/D main case.

Question...how easy is that case just to slip back after undoing case bolts and output shaft nut and renew the gasket in-situ????

Car is currently on ramps on driveway with prop shaft, rear gearbox mount all removed. Also rear diff as im addressing input seal leak on that as well

Thanx

[NeilR]

To replace the casing gasket is complete dismantle of O/D, so it has to come off gearbox entirely.
Sump gasket is easy to do, oil everywhere when removed though, so messy job.

[flying farmer]

Sometimes the oil comes up the threads of
the bottom two bolts where the adapter plate is bolted to the gearbox case. Can be fixed by fitting a plain copper washer instead of a split washer, or a good dollop of thread sealant.

[NeilR]

There should be copper washers on the two top rear casing nuts, if it's been apart someone may have just used plain steel washers.

[mike@thenook]

Have you replaced the copper washer on the speedo angle drive?
Mine had that missing and was a source of a leak for years.

[Rabd]

Have you replaced the copper washer on the speedo angle drive?
Mine had that missing and was a source of a leak for years.

Copper washer on speedo drive?
just learned of copper washers on casing bolts but cant see anything about one on speedo drive??
As i posted new o- ring and seal fitted
Rab

[mike@thenook]

It fits between the angle drive and the adaptor that screws onto - very important part to stop oil leaks from that point.

[trunt]

Also check for copper washers on the brake ring nuts, mine leaked from those until I fitted some, I don’t remember exactly which ones as I ended up just putting copper washers on alll I could get to.. no leaks now.

[Rabd]

It fits between the angle drive and the adaptor that screws onto - very important part to stop oil leaks from that point.

Mike,
Could be the culprit as there wasn't one fitted when i removed it! Can't find the angle drive in Rimmers catalouge and can' t see who the supplier is from your image.

Can you tell me who your supplier was

Thanx

Rab

[DJT]

http://www.ldpart.co.uk/shop/shop.php?c=viewproduct&pid=737&cat=13&sid=sid7c7718a7efc6c64896a20fc2b731f433

[Rabd]

Thanks all. Hopefully the fitting of these copper washers will solve the issue