Case 4240 Transmission Oil and Filter Change

[DrWazzock]

I am intending to change the transmission oil and filter which is in the bowl up the LHS of the transmission housing.
Are there any other screens or mesh strainers that need cleaning?
Also, how do you drain the 4wd transfer box that sits under the transmission. It looks like there are two plugs in the end of it but don't want to undo them if they aren't plugs. Look a bit odd. Also appears to be a drain plug under the diff housing but its higher than the transfer box.

Just wondering how I can get as much muck out as possible and get it all flowing freely.

Thanks.

 

[Mr Mackay]

Case 4240 I presume ?

 

[DrWazzock]

That's the one. Case IH 4240 to be precise.
Drained it from plug under diff and plug under gearbox above transfer shaft. Replaced hydraulic filter and I'm back hedging again. If it needs anything more thorough it will get done next change but seems OK.

Bit concerned the transfer box might have accumulated some grit as it is lower than the drain plugs but not to worry.

 

[Flat 10]

If its like the earlier 885 filter bowl don't over tighten.

 

[livestock 1]

That's the one. Case IH 4240 to be precise.
Drained it from plug under diff and plug under gearbox above transfer shaft. Replaced hydraulic filter and I'm back hedging again. If it needs anything more thorough it will get done next change but seems OK.

Bit concerned the transfer box might have accumulated some grit as it is lower than the drain plugs but not to worry.

Is there a drain plug on the side of the bottom of the transfer box with a hexagon in it?

 

[DrWazzock]

Is there a drain plug on the side of the bottom of the transfer box with a hexagon in it?

I'll have another look but can't remember seeing one. There are what look like two hexagon headed plugs seen from the rear of the tractor but they aren't plugs according to a diagram I found. They are something to do with the internals of the transfer box.

 

[livestock 1]

I'll have another look but can't remember seeing one. There are what look like two hexagon headed plugs seen from the rear of the tractor but they aren't plugs according to a diagram I found. They are something to do with the internals of the transfer box.

Ok the old 895 xl has a plug on the left side of the transfer box standing behind the tractor I thought it was the same set up. I wouldn’t shift them if it’s something internal.

 

[DrWazzock]

Engines blown a piston ring now I think. Masses of blue smoke coming out the breather.
Are these wet liners? Do they take much force to pull out?
Thanks. What a week.

 

[essexpete]

Engines blown a piston ring now I think. Masses of blue smoke coming out the breather.
Are these wet liners? Do they take much force to pull out?
Thanks. What a week.

We made up a puller with some plate and a long bolt. Sump and head off.

 

[agrimax]

Might just be the head gasket.......

 

[DrWazzock]

Might just be the head gasket.......

Back around January, I took the head off and had it reburbished, skimmed, new gasket, valves and injectors done, back on again and all seemed fine. Been using the tractor until this week when it suddenly started blowing a lot of oil smoke out of the sump breather. So much smoke, you can't see the tractor if its stood with the engine running. Also seems to be a cylinder not firing.

Our concluson was that a piston ring has gone, oil is getting past the piston and being burned in the cylinder with the blow by and smoke also leaking past the piston and being blown out the breather. That's our interpretation of it.

 

[livestock 1]

Back around January, I took the head off and had it reburbished, skimmed, new gasket, valves and injectors done, back on again and all seemed fine. Been using the tractor until this week when it suddenly started blowing a lot of oil smoke out of the sump breather. So much smoke, you can't see the tractor if its stood with the engine running. Also seems to be a cylinder not firing.

Our concluson was that a piston ring has gone, oil is getting past the piston and being burned in the cylinder with the blow by and smoke also leaking past the piston and being blown out the breather. That's our interpretation of it.

Probably is but look for the easy things first. Is it getting air unrestricted?

 

[DrWazzock]

Probably is but look for the easy things first. Is it getting air unrestricted?

It's absolutely kelching oil smoke out of the breather, and a smaller amount out of the chimney.
Will strip down carefully looking for signs.
Seems a hell of a lot of smoke for a broken ring.
But why else would it breathe so heavily?

 

[livestock 1]

It's absolutely kelching oil smoke out of the breather, and a smaller amount out of the chimney.
Will strip down carefully looking for signs.
Seems a hell of a lot of smoke for a broken ring.
But why else would it breathe so heavily?

Could have picked up in one of the pots maybe. It could be rings but sounds drastic

 

[DrWazzock]

Whatever it is, it's a damn nuisance as it has a hedger and loader on it and I haven't room to park it out the way inside at the moment. Did the head up back in January. Should have done the pistons and liners.

 

[essexpete]

Out of interest have you had any knocking on start up?

 

[DrWazzock]

Out of interest have you had any knocking on start up?

I'd say there is a bit. Noticable at low revs. Revs seem to pick up very slowly as well. Hardly dare run it anymore there is huge amount of blue oil smoke from breather. Very low on power, but ideally need it running to get the loader off.

Anybody want some projects? This one and a Lamborghini 105 for £10k for the pair. Lambo has transmission failure but otherwise very good.

Don't have so much time to clat around with these things as I used to, but will get them done eventually probably when I retire. Tryjng to get on with farming work, which doesn't stop for broken down classics!

 

[essexpete]

I just wondered if the heat pilot has been leaking into the manifold?

 

[livestock 1]

I just wondered if the heat pilot has been leaking into the manifold?

Yes that would cause the knocking too

 

[DrWazzock]

I just wondered if the heat pilot has been leaking into the manifold?

Thanks for the suggestion. Worth a look. I had wondered if the turbo was leaking oil into the manifold but can't imagine the seal would fail so suddenly. There was a trace of oil from the turbo in the inlet manifold when I did the head but it wasn't thought significant and the turbo bearings seemed reasonable. Both air filters were renewed. It's been hedging and just had transmission oil change. No connection with engine really.

Head gasket is a possibly. I didn't retighten it after running it in. Maybe should have done but there were no instructions in manual to do this and lots of stuff has to come off to do it.

It really is a phenomenal amount of blue smoke pouring out of the breather, which came on very suddenly. I dare say the bores/pistons are very worn though, so maybe the heavy breathing was always there, but not the blue smoke. Smells like burning oil rather than diesel.