Rear hub / driveshaft seal

Rear hub / driveshaft seal

Author
Discussion

chris212

Original Poster:

133 posts

164 months

Saturday 6th April 2019
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Hi all!
Car just failed the mot on the n/s rear hub driveshaft seal. Oil leaking onto the hub. Can anyone tell me the procedure for replacing it?
I take it the oil I can see is from the cv boot? Can’t think where it’s coming from otherwise? Driveshaft is dry coming out the diff.
Thanks

lancepar

1,041 posts

179 months

Saturday 6th April 2019
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I would be interested in hearing replies to this because as far as I know the only fluids/lubricant in his area are brake fluid, wheel bearing grease and CV joint grease.

cool




Plan B

347 posts

132 months

Saturday 6th April 2019
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Oil leaking from rear damper??

lancepar

1,041 posts

179 months

Saturday 6th April 2019
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Doh, I hadn't thought about that

cool

Moose v8

204 posts

73 months

Saturday 6th April 2019
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Yes, shocker leaking? I can't see it been brake fluid would have failed brake test. how was it worded on failure sheet. Racetech do hub seals they wouldn't leak oil speak to the mot station,to confirm the components that have failed . Mot testers do make mistakes I know I work in one.

bobfather

11,186 posts

262 months

Saturday 6th April 2019
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CV leaking into the hub, i.e. not a split gaiter. Mine is currently doing this and looks just like yours. There's a cover plate around the shaft where it bolts onto the wheel hub. CV grease can leak around that cover

lancepar

1,041 posts

179 months

Saturday 6th April 2019
quotequote all
bobfather said:
CV leaking into the hub, i.e. not a split gaiter. Mine is currently doing this and looks just like yours. There's a cover plate around the shaft where it bolts onto the wheel hub. CV grease can leak around that cover
When I viewed the Griff' I bought recently it was like the OP's photo, and the Dealer said verbatim what Bob says also it didn't fail its fresh MOT.

I'm Happy now

cool

Edited by lancepar on Saturday 6th April 17:14

chris212

Original Poster:

133 posts

164 months

Saturday 6th April 2019
quotequote all
It’s like clean engine oil. Wouldn’t the cv boot be packed with grease? What seal do I need? Mot pic below

lancepar

1,041 posts

179 months

Saturday 6th April 2019
quotequote all
chris212 said:
It’s like clean engine oil. Wouldn’t the cv boot be packed with grease? What seal do I need?
Yes it does look and feel like oil but it's seperated from the grease in the cv joint.

If it were me i'd degrease the affected area and either take it back to the tester and explain there's no where oil can leak from in this area or take it to a tester that knows TVR's

Have you checked the shocker for leaks?
Is the clamp on the CV boot tight?
Are the drive shaft fixings to the outer hub tight?

cool

chris212

Original Poster:

133 posts

164 months

Sunday 7th April 2019
quotequote all
lancepar said:
Yes it does look and feel like oil but it's seperated from the grease in the cv joint.

If it were me i'd degrease the affected area and either take it back to the tester and explain there's no where oil can leak from in this area or take it to a tester that knows TVR's

Have you checked the shocker for leaks?
Is the clamp on the CV boot tight?
Are the drive shaft fixings to the outer hub tight?

cool
Would it be coming through the hub? How is it prevented ( a seal failed?)
No signs of leaking from the cv boot. Shock ok. Nipped up the bolts on the cv plate to hub and cleaned it up. They were already tight (36 ftlb is the quoted setting I think but I tightened them more)
Cv boot looks fine and clips tight- no sign of leaking.
I guess it will pass now, but would like to fix it really. The other side looked similar but not as bad.
Thanks

bluezeeland

1,965 posts

166 months

Monday 8th April 2019
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How long have you had the car, or to put it in other words, do you know what is in the hub (grease/oil...) ?

chris212

Original Poster:

133 posts

164 months

Tuesday 9th April 2019
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9 years. Never touched that area so don’t know what’s in it. Assumed it would be packed with grease? Never heard of anything like that being filled with oil. Don’t want to disturb the cv boot as it’s in good condition (looks like last owner put new on during rebuild)
Never heard of grease separating, so really puzzled on this one.
I was expecting it to be diff oil running down the driveshaft, but not the case.


TJC46

2,164 posts

213 months

Tuesday 9th April 2019
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It is probably nothing to worry about, just general grease and grime.

Only other possibility would be the rear hub/ rear wheel bearing as this has 2 no seals just to contain all the grease around the

bearings. But this would indicate possible wheel bearing problems, but then the M.O.T should of found any play in them.

Clean everything up and just inspect on a regular basis.

bluezeeland

1,965 posts

166 months

Tuesday 9th April 2019
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Can't be your diff, if a drive or prop shaft seal is leaking, oil will drip down from the diff proper............you've establish it ain't your shocks..........carbon grease from the CVs will not seperate.........that'll leave you with the wheel-bearing cavities............I would agree with the previous post, if a bearing problem is there you /MOT peep should notice problems. Clean up the oil, have it MOT and keep a close eye on it (if problems persists, renew the wheel bearings/repack)

chris212

Original Poster:

133 posts

164 months

Saturday 13th April 2019
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bluezeeland said:
Can't be your diff, if a drive or prop shaft seal is leaking, oil will drip down from the diff proper............you've establish it ain't your shocks..........carbon grease from the CVs will not seperate.........that'll leave you with the wheel-bearing cavities............I would agree with the previous post, if a bearing problem is there you /MOT peep should notice problems. Clean up the oil, have it MOT and keep a close eye on it (if problems persists, renew the wheel bearings/repack)
Passed MOT today after clearing it up. Must be wheel bearing grease over time, so I guess it needs a new seal. Will do it and re grease it ( don’t want the wheel bearing going).
Thanks for all the advice!

Sardonicus

19,109 posts

228 months

Saturday 13th April 2019
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I would be inclined to renew both bearings and both seals going forward,. If you do decide to just renew the deal and re-pack the bearings don't mix up the races inner to outer because they are identical parts

lancepar

1,041 posts

179 months

Saturday 13th April 2019
quotequote all
chris212 said:
Passed MOT today after clearing it up. Must be wheel bearing grease over time, so I guess it needs a new seal. Will do it and re grease it ( don’t want the wheel bearing going).
Thanks for all the advice!
Well done.

So next MOT I bet you will be under the car clearing away any oil residue before taking it, I wouldyes

cool

TJC46

2,164 posts

213 months

Saturday 13th April 2019
quotequote all
Sardonicus said:
I would be inclined to renew both bearings and both seals going forward,. If you do decide to just renew the deal and re-pack the bearings don't mix up the races inner to outer because they are identical parts
This..yes...once you remove the rear hub nut and pull the carrier of the spline, [which you will have to do to change the seals] then you may as well fit new

wheel bearings. Contact TVR Parts for a cost to purchase 2 off. The link below is for one, but comes with 2 hub nuts. You need 2 off but then you will have 4 hub nuts?????????

https://tvr-parts.com/tvr-parts/part-details/tvr-d...

crowfield

444 posts

165 months

Saturday 13th April 2019
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I had the same on my Chimaera. I noticed it when it was being MOT'd, ( friendly tester let me walk under the car to have a look around ) but the tester didn't make any comment - just passed the car with no advisories smile I have replaced wheel bearings and seals on both sides to be on the safe side.

Sworkskid

13 posts

54 months

Saturday 6th April
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Sorry for an old thread resurrection. Can the rear hub bearing be done with the carrier in situ?