I have a 1994 Ford 7740 with about 8500-9000 hrs and recently there does a be a pool of engine oil on the ground when i turn off tractor after the tractor has been running a while, the oil comes out of the steel breather pipe down side of engine(injector pump side) every time i stop the engine. Is this normal? Or what Can i do to fix this? Thanks
Ford 7740 Oil Coming out of Breather pipe
- Thread starter Fmck1994
- Start date
- Location
- Lorette Manitoba
Certainly not normal. Is it just engine oil. coolant might be leaking in and raising the oil to the top and it’s flowing out. Might even be diesel that’s coming in from a lift pump or injector block. At some point it going to die from lack of lubrications so fix it first.
startinghandle
Member
I remember our JD2040 would leak oil from the rocker cover gasket if it went over due for oil change
Has it been used for light work causing glazed bored
Has it been used for light work causing glazed bored
Nearly
Member
- Location
- North of York
Almost normal for a 40 series. 
Check the tappets and while the rocker cover is off look at the fibre insert blocking the breather pipe.
Check the tappets and while the rocker cover is off look at the fibre insert blocking the breather pipe.
Pistonbroke
Member
A few early 7740s had a baffle plate retrofitted inside the rocker cover to stop oil being thrown out of the breather.
Nearly
Member
- Location
- North of York
The really bad ones had an 'oil catcher' piping it back into the sump.
Pistonbroke
Member
We have never owned one but a valley nearby had about ten farms with at least one,all from the same dealer and I saw one being fitted. Just a flat steel sheet with cutouts for rockers etc. Fitter said they were only fitting them on problem ones,which seemed a bit tight to me because it was only a ten minute job
Have a 1992 7740 here with 14000 hours and not a drop out of breather .
Remove breather tube, rubber grommet, then using qa small hook tool remove filter wipe clean where it fits and fit a new one [do not wash and refit old one] refit other parts this should stop a lot of oil, as stated a catch can can be fitted to return oil to sump if bad, i made several different types for Fords when this problem started.
fermerboy
Member
- Location
- Banffshire
Is it a SL with the aux pump on the side of the block?
I'd one went the seal and it was dumping rear axle oil into the sump till it was spitting it in the most spectacular fashion.
I've got various 40s at 16-17k hrs and a bit of dampness round the breather pipe is the extent of it.
If its got that bad crankcase pressure, she must have really worn/glazed bores, or broken rings maybe.
I'd one went the seal and it was dumping rear axle oil into the sump till it was spitting it in the most spectacular fashion.
I've got various 40s at 16-17k hrs and a bit of dampness round the breather pipe is the extent of it.
If its got that bad crankcase pressure, she must have really worn/glazed bores, or broken rings maybe.
Similar here with my 7840. Did you get it fixed? If so what did it need?