Could be old fluid. Keep an eye on reservoir level over next few days.

 

Spray it with brake cleaner and monitor brake fluid

 

this one is before i started the car today.

And then i let the car idle for a good 30 mins pumping the clutch every now and again.

Hopefully its a case of the first old leak making its way out.fingers crossed.

 

Come on people, someone any thoughts on this?? What colour is gearbox oil ? Would it leak from there or further away from the bellhousing??

 

I'd keep an eye on it for a day or two, then maybe every couple of weeks.

 

Yeah I will keep An eye on it, just wondered what colour to look out for

 

Hi Tomsky I've experienced this before after having all my clutch/flywheel slave etc changed . It was the seal between the concentric slave cylinder and the gearbox . Some gearboxes were not quite machined properly from the factory so when you change the slave the rubber seal/o ring doesn't seal properly against the gearbox so gearbox oil leaks out and sprays round and usually comes out the gap where the engine and gearbox are bolted together like on your photos. Mine was coming out the bottom and the top of this joint . This was fixed by having to remove the gearbox again then replacing the rubber o ring that is on the back of the slave cylinder (this is on back of slave that is squished between gearbox and slave) with a sealant then bolting it back on again and refitting gearbox . We used loctite 518 sealant. Ford are aware of this problem and it also happens to vw sharans and jag x types that use same gearbox as mondeos on some models. The ford part no's for there approved sealant is Esk-m4g269-A or WSK-m2G348-A5. Another thing is that these gearboxes are sometimes filled with automatic transmission fluid and mine still is which can confuse you when you rub the leak and smell ya finger u wont smell the normal strong gearbox oil smell that gear oil has and think its something else.

 

Sorry havnt been on,been a bit busy.Thx for that,will mention that to the garage,going to try and get it back in soon.About thr gearbox oil,i undone the filler plug the other day,there was no dripping or overflow when i removed the plug,so put my finger in i could feel the oil just below the hole,and it stank it was awful lol,so put the plug back in,i then wiped where it was leaking from on the bellhousing and that deffo was not gearbox oil,hardly any smell to it,it fel slightly grainy, when rubbed between the fingers,so i an thinking its brake/clutch fluid,cant see it being the rear crankcase seal,as this would piss out,when the cars running.And my engine oil hasnt moved any on the dipstick.The seal your referring to,is it on the back of the slave already or is it a seperate seal i will need?thx mate.

 

Sorry havnt been on,been a bit busy.Thx for that,will mention that to the garage,going to try and get it back in soon.About thr gearbox oil,i undone the filler plug the other day,there was no dripping or overflow when i removed the plug,so put my finger in i could feel the oil just below the hole,and it stank it was awful lol,so put the plug back in,i then wiped where it was leaking from on the bellhousing and that deffo was not gearbox oil,hardly any smell to it,it fel slightly grainy, when rubbed between the fingers,so i an thinking its brake/clutch fluid,cant see it being the rear crankcase seal,as this would pi$$ out,when the cars running.And my engine oil hasnt moved any on the dipstick.The seal your referring to,is it on the back of the slave already or is it a seperate seal i will need?thx mate.

Hi tomsky

The seal that was the problem with mine was the one on the back of the concentric slave cylinder . This is between the slave and the gearbox as i said above . Mine was confusing as it didnt smell of gearbox oil because the box had atf fluid in it . I tested mine by jacking both front wheels off the ground started the engine and put it in gear . Soon as you put it in gear the oil started dripping out more . Then slowed to a small drip when in neutral. As i said above we used loctite and did away with the rubber seal all together as it wouldnt seal against the gearbox . If yours is leaking brake fluid you unfortunately usually have to replace the whole slave . Unless somebody on here knows different . Check your brake fluid reservoir to see if the brake fluid has gone down as this feeds the clutch slave as well . Gearbox will probably have to come out again to fix it whatever it is . Garage should do it under guarantee ? If you had all the bits changed at once.you shouldn't have to bung out again for faulty parts or someone damaging something being heavy handed putting things back together.

 

I am hoping its brake fluid,to be honest,if this goes tits up with the garage,how much am i looking at just to replace the slave,seeing as theres a new clutch in place???

 

To replace the slave will cost just as much as the clutch swap cost in terms of labour.

The box will need to be removed the same as if you were changing the clutch

again.

Also there is a risk that fluid has got onto the clutch plate which can ruin them.

 

Thx,told the garage i aint happy,and to get it sorted,asap,if its the slave,could they not drop the subframe on one side.and pull the box back enough to get the new one in?.

 

They will need more room to do the slave than the clutch itself because the

slave is in the box.

The time difference between moving it over far enough and taking it out wont

be great when you add in the extra time it will take to fiddle with the slave with

less space to work.

It will cost roughly the same in labour, unless they charged for more time than it

actually took and know they can do it faster this time.

 

This is supposed to be the second slave thats gone in,now when i first had the job done,they billed me for 7 hours labour,now,when i took the car in last week,dropped it off at 12.30,they had the second slave in by 5.00pm??,if its supposed to take just as long,they were pretty quick the second time around,Could they have done it that quick?to get the second slave in or have they tried to bodge the first slave?also i dont think they sealed the back of the slave to the back of the input shaft, with loctite 518 sealer,? where it bolts on,and thats why i think its leaking from there.

 

I'm confused (easily done). Are we saying the slave needs a seal between the back of the slave cylinder and the box? I thought the slave essentially a self contained unit. I can see incorrect fitting or perhaps a replacement dmf/clutch with a different height might cause slave to overextend. Not come across the mismachined issue before...

 

Even ford have done away with the o ring on the back of the slave??? Why I don't know but everywhere I have read say use loctite on the back of the slave as leakage can occur from the input shaft ??

 

At work at the movement will put the link up later

 

Ah.. so this is a leak of gearbox oil from input shaft, not hydraulic fluid? Does the slave contain the input shaft oil seal now? Will read your link with interest. All this modern stuff...

 

To be honest I am not sure?? Doesn't smell like gearbox oil

 

Hers the link.

http://www.valeoservice.comthen click on technical info,clutch and csc the scroll down till you find ford

 

Those gearbox stop leak tubes of stuff you squirt into the gearbox can make the gearbox fluid smell different as well . Think it has brake fluid in some of the ingredients to make leaky seals swell up . If somebody has been naughty and squirted some of that in it could confuse the smell of the fluid as well . Noticed this before when I've used that stuff (its crap don't bother )As i said in my earlier post my box oil that was leaking didn't smell of gearbox oil as the gearbox was filled with ATF fluid . Found that some vw's that share the gearbox with the mondeo are filled with ATF fluid as well ,dextron 2 . Apparently it helps with gear shifting in cold weather . How true that is feck knows

 

That's really interesting. The illustration seems to show an o ring (with the bearing visible through it )rather than the normal input shaft seal. You can see how that would leak if the csc did not also act as a shaft seal.

 

Yeah that's what I thought

 

Yeah thats the crappy o ring that fails . Loctite or ford approved sealant now takes the place of the o ring .

 

another trick to get more money off you