P38A Leaky rear diff

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300bhp/ton

Well-Known Member
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Near MK
Almost got my p38 MoT ready. Test driving it around the field today and it seems to have developed a leak.

Quite a lot of oil (think it’s oil) is dripping down from near the rear Y section of exhaust not far from the fuel tank, above the rear axle.

The nose of the diff and end of be prop are all wet. So I’m guessing it’s the pinion seal.

Google is being a little vague and I can’t find a p38 exploded diff diagram. Is there only one seal for the pinion?

Such as this
https://www.ebay.co.uk/itm/Bearmach...179524&hash=item33bca33988:g:ys8AAOSwyLlXoXdO

Thanks.

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0A3000EA-13EA-46D6-9C90-6E877AF20CC3.jpeg
 
edit :oops: rear diff;) read the post properly (slap myself)
Needs a closer look:)

J
 
Last edited:
Nah it had got too late. I only crawled under to check some bolts. Thought it was brake fluid at first as I’d just had a low fluid warning on the dash. But it doesn’t smell or feel like brake fluid. Nor petrol.

It’s a golden colour. EP90 I think. But first saw it dripping down off of the cross member by the exhaust and onto the top of the diff casing and then dripping off the bottom of the diff. Think it must have flown the oil everywhere. Hoping it’s only the diff pinion and nothing more serious at any rate!
 
Almost got my p38 MoT ready. Test driving it around the field today and it seems to have developed a leak.

Quite a lot of oil (think it’s oil) is dripping down from near the rear Y section of exhaust not far from the fuel tank, above the rear axle.

The nose of the diff and end of be prop are all wet. So I’m guessing it’s the pinion seal.

Google is being a little vague and I can’t find a p38 exploded diff diagram. Is there only one seal for the pinion?

Such as this
https://www.ebay.co.uk/itm/Bearmach...179524&hash=item33bca33988:g:ys8AAOSwyLlXoXdO

Thanks.

View attachment 190176

View attachment 190177View attachment 190177

@jamesmartin would know.
 
It has a seal, as do all diffs thats how u keep the juicy bits in.

Whats the fluid level like?

Brake fluid level?!
 
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