John Deere 4755

[Hesston4860s]

Hi there

I’ve a 4755 which has recently started to breath quite heavy which it’s never done before, it always ran clean !.
There doesn’t appear to be water in the oil but it does look to me as if there’s oil in the water “it looks like cold tea”, it starts fine and runs fine. It only ever pulls a Baler and ran it fine all last harvest.

 

[puntabrava]

£6000

 

[Hesston4860s]

£6000

?????

 

[Bob lincs]

?????

?????

I will up that to £6500

 

[whiddy]

Hate to say it but, will probably be a head off job! had a 4850 that used to do that for a past time! It was normally a head bolt that had broken. have a look in rad cap, any bubbling?

 

[puntabrava]

Will be the gearbox next.
£6750

 

[Hilly]

You can get a kit/tool you put on the radiator and it will tell you if head gasket gone, forgot the name of it but im sure google would find it for you.

 

[Bob lincs]

You can get a kit/tool you put on the radiator and it will tell you if head gasket gone, forgot the name of it but im sure google would find it for you.

I’ve got one , I call it a sniffer but don’t know the proper name . It can detect exhaust gas in the water but not oil .

 

[Hilly]

I’ve got one , I call it a sniffer but don’t know the proper name . It can detect exhaust gas in the water but not oil .

Thats the one.

 

[Bob lincs]

 

[Hesston4860s]

Hate to say it but, will probably be a head off job! had a 4850 that used to do that for a past time! It was normally a head bolt that had broken. have a look in rad cap, any bubbling?

Nope no bubbles in there, also had overflow pipe into bottle of water no bubbles there either !.

 

[Hesston4860s]

View attachment 781368

Got similar thing not quite as comprehensive coming from eBay £8

 

[Hilly]

Cylinder head Gasket is good job, love doing them.

 

[Hesston4860s]

Cylinder head Gasket is good job, love doing them.

I’ve done a fair few in the past, not gonna say I love doing them but there ok.
Not looking forward to this one as it’s mine and I’m paying NOT being payed to do it.

 

[whiddy]

Check the height of the liners while your there!

 

[Hilly]

I’ve done a fair few in the past, not gonna say I love doing them but there ok.
Not looking forward to this one as it’s mine and I’m paying NOT being payed to do it.

All ones ive done are mine , i dont do work for other people, tis a nice job to get stuck into, secrete is a good person to skim it crack test and do valves etc, price a new head you might get a pleasant surprise but then again its a johndeere so maybe not.

 

[Hesston4860s]

Check the height of the liners while your there!

It’s the liners that worry me !, if it needs pistons and liners it won’t get done !.

 

[puntabrava]

It’s the liners that worry me !, if it needs pistons and liners it won’t get done !.

It hasn’t done many hours has it? Unusual for them to blow oil into water with hedgasket gone, done 4 and never had that, all went on no 6.

 

[whiddy]

Got mine sent over from the States when I did mine, think it was cheap at the the time, no idea of cost as it was long time ago.
Was told it was the torsional rigidity that was the problem, as the artics didn't suffer so badly.

 

[Hesston4860s]

It hasn’t done many hours has it? Unusual for them to blow oil into water with hedgasket gone, done 4 and never had that, all went on no 6.

Done just over 5k hours. Oils normal in colour but like I say waters horrible !.