Diff lock leak.
I have a loss of fluid from the diff. lock reservoir but no obvious leak. On checking the rear axle oil recently it was over full and thin. Is it possible to have a leak into the rear axle case? If so can I buy a seal kit or is it a whole new part? Any ideas on what's happening? Hope you can help.
its possible but not sure if that amount of fluid would make all the oil thin unless its just laying on the top. I would change the diff oil and dissconect the rear diff pipe and seal off or clamp and see if the oil dissapears. I am not aware of a seal kit but speak to your local MB dealer first.
There is a repair kit for both the master cylinder and the slave:
For my 1989 280ge the master kit is A000 353 24 55 and the slave is A460 350 07 84
Ernest, your a bit of a diamond when is comes to these Part no's. Looks like your the new JESUS. I'm a believer!!!!. Oh no, that was the monkees?
Ernest,
Master and slave for the diff locks? I thought they were independent, front and back? both with the same design?
Appreciate if you can clarify. My seals are totally worn.
Cheers,
Jeff
Ernest,
Master and slave for the diff locks? I thought they were independent, front and back? both with the same design?
Appreciate if you can clarify. My seals are totally worn.
Cheers,
Jeff
They are independent: front master, front slave; rear master rear slave. The seals are the same as above, ie both masters are the same seals as are the slaves. To do both front and rear you need two sets of the part numbers listed.
Check the partnumbers with MB with your VIN number if you get them as my EPC is over six months old and there may have been changes. Hope this helps - Good luck.
The only rubber pipe that should be there is the one from the fluid reservoir under the bonnet to the master cylinders. It’s prone to failure and is a push fit at both ends. It looks a pig to replace but it’s very easy to do by just feeling your way about even though you can’t see anything. Just pull the old bit out and go get a replacement pipe from a motor store – a longer pipe is easier to install – be careful as the plastic connector that joins the master cylinders and which it pushes into is really delicate and prone to breakage. When I did mine it didn’t even need bleeding afterwards.
Hi, I seem to have a similar problem with my 1987 280ge automatic, the difflock resevoir under the bonnet empties itself after a couple of hours, my mechanic believes it to be leaking from underneath, not from the pipe but from the servo itself, can anybody supply advice/part numbers.
regards.
Frannie,
See reply on your other post. There is no (vacuum) Servo on a 460 diff lock but sometimes mechanics call master/slave cylinders "servo" I think... Most likely problem is perished rubber hose at the master cylinder feed down around gearbox area.. area where the rods pass through from up by the gearchange is where the master cylinders are. Brake fluid is thin and there is so much grease down there it is hard to see sometimes; especially when wet.
Until mechanic finds leak you cannot solve it but not impossible.. just wash under car, fill up and wait 24 hours .. especially on dry days when you can see fluid seepage... trying to see it in the winter can be hard.
Hi Our workshop replaced the hose under the reservoir to stop a seeping leak through a perished hose only to find another hose half way along the near side chassis (parallel to the fuel pipe from the tank) also seeping from a decayed flex hose.problem solved with new push on hydraulic hose cut to length and a top up with dot 4+ hydraulic oil.....................
So that leaves one more of those flexible hoses in a far more important area .. the reservoir feed to the brake master cylinder.. would definitely get the garage to replace that bit at the some point very soon.
so there are 3 bits of hoses
one diff lock reservoir feed,
one diff lock steel pipe from reservoir to actual master cylinder down by chassis rails beside gearbox
one is on the other side of the engine for the reservoir feed to the brakes
.. if one has perished they all need done.
I have just put an enquiry on american forum regrding this leak and non operating pumps/master cylinder etc problem.. But I have to say you have answered everything.I am impressed. Long live GWOA.
so I can fix my master cylinder for the diff locks with the above part numbers. One question though.
do you have to remove the master cylinder when doing this repair?
I do not believe you can do a proper master cylinder rebuild with it installed on the G. The 2 masters come down fairly easily in their lever housing. I did this last year. Very straight forward and a good time to clean up the mechanism and give it a shot of paint to protect it.
Mark
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Sorry for delay in replying. It now appears my diagnosis was wrong (I blame man at garage). The leak is from a rubber pipe about the middle of the vehicle This pipe looks like an earlier repair as M.B. say it should be all metal. I did fit the service kit to rear diff. lock for about £25 but no harm done. Thanks for all your help. Vic b.