JCB 3C MkIII Rear Wheel covered in oil...

[Woody3]

Just been under the rear of the machine and it appears my right handside rear wheel is covered in oil. I can see it actually dripping from the axle as such.

Any ideas what could be causing this and is it something that is "easy" to fix?

[philwheelton]

sounds like the oil seal is leaking in the end of the halfshaft which transmission / axle set up have you got, is it the Leyland or JCB's own rear axle?...

[essexpete]

sounds like the oil seal is leaking in the end of the halfshaft which transmission / axle set up have you got, is it the Leyland or JCB's own rear axle?...

Have you got a separate prop shaft?

[Woody3]

I'll have a look tomorrow morning. Don't recall a rear propshaft, but not certain.

[TullyveeryClassicJCB]

Woody's digger has the Brockhouse Build 3 torque so would be the Leyland axle.

[Woody3]

Thanks Tullyveery

Here are some photos anyway.

The other wheel is completely dry.







ETA - there is no visible rear prop shaft.

[davew2]

Bloody hell it looks like youv'e been under my digger

[TEZB]

Mines is about the same (keep putting it off), not a big job to do if it was the Leyland tractor but more of a job on a JCB

[Woody3]

Ah, so I'm still ok to use it? Didn't want to drain the axle dry.

Is it the hub seal that's gone then? I'm leaning towards getting someone in to fix it, as I don't like the idea of 7tonne of steel without a wheel on it, above my head...

[hubert]

Remove floor plates. Jack machine up. Remove wheel. Drain oil out of rear axle. Remove heavy plate at rear of axle. Might need assistance with this. Inside you will find a large nut held on with a split pin. Remove pin & nut. Half shaft should pull out. Prize seals out of axle housing. Replace seals and fit half shaft taking end float out of half shaft. Do not over tighten.