Changed rear axle seal, still leaking!

[Wipeout]

Hi everyone,
So before doing a 5000km trip with our MK4 190L I changed the rear axle seal because it was leaking a bit from the entry of the shaft.
So I bought aftermarket seal (corteco) piece number 01026326B, which one has 11,5mm height....
At the beginning seamed to be sealing fine, but after some kilometers the rear door started to get with little drops of oil all over the door...I needed to top up the differential oil at the end of the trip...

So now I bought another seal...that has the same diameter but 12mm height...part number 01035950B

Do you know something about this problem with aftermarket seal?
Any tip/advice is more than appreciated!
Thanks!

[dumper]

Can’t be of help with seal type but make sure the breather is not blocked and the axle is pressurising and forcing oil passed the seal .
I’ve also had oil coming up the spines and coming out inside the flange and had to put sealer on one .

[Wipeout]

Can’t be of help with seal type but make sure the breather is not blocked and the axle is pressurising and forcing oil passed the seal .

Thanks for fast reply, I’ve checked the axle vent. Actually the van has like rubber cap on top of the vent. And nothing was block there…

[dumper]

If I remember correctly I used to remove it from the axle pull the cap off and clean it out it has a ball in it that may be spring loaded and they used to stick.

[Wipeout]

Hi again, just a little update to see if I can get some more opinions....
So the last weekend I did a 1k km trip...the axle started to leak a bit like 1 hour after departure...
So what I concluded is that the front seal is leaking when the axle gets hot after running some good kms...when I use it on a short distance or drive (30min-45min) it doesn't leak any...

Ive checked the vent, should be ok, I will say cannot be over pressure...

Thanks again for your comments !!

[dumper]

Has the lip of the seal worn a grove on the flange were it runs .

[metalworker0]

what dumper said ...and the best seals have spiral mouldings on them that send oil back towards inside. some OE have them ..whilst after market don't ..shown is rover t-series cam seal- they are directional. note: arrow on the seal.

if there is a groove worn on the shaft, it may be possible to pack the seal housing with shims so making the seal rub on a different area of the shaft

spiral mounding - like so : press to enlarge and see detail

all the best.mark

[Wipeout]

Hello again, thanks so much for the reply!
Im gonna have a look in the next days to fix it...

Has the lip of the seal worn a grove on the flange were it runs .

I don't understand very well sorry its because of language problem...so I should buy shims with the same dimention of the seal to pack inside the seal housing?? Should I make this shims "custom"?

[dumper]

If it’s worn a grove in it really needs a new flange or a good used one in the past I’ve had parts Metal sprayed and re-machine machine .i don’t know if you can get what we used to use on worn Cummins crankshafts seals was what is called a speed sleeve that that is knocked on to the crankshaft and a over sized seal is used .

SKF Speedi-Sleeve this is off Google. www. skf.com

This thin-walled sleeve [0,28 mm (0.011 in.)], developed by SKF, is simply pushed in position over the worn area, providing a counterface surface that is optimized for radial shaft seals.
There is no shaft disassembly or machining involved and costly downtime is minimized. Since the same sized seal as the original can be used, there is no need to search for other seals, or keep a stock of different sizes. No special equipment is required since the installation tool is supplied with the sleeve. A mallet and a pair of pliers are all that is needed for the installation.

Size range
The standard size range covers sleeves for shaft diameters from 11,99 to 203,33 mm (0.472 to 8 in.). Depending on production quantities, non-standard sizes can be manufactured. Each sleeve is designed to fit a specific shaft diameter range, usually above and below the nominal shaft diameter. This permits some flexibility to accommodate variations in the actual shaft diameter.

WHERE TO BUY

[Wipeout]

Hello cool people from the forum, finally todays I got to change the seal…but I’m not so sure about the final result…
Below the picture of how the previous seal was leaking…clearly is not leaking around himself but from the inner circle…
So I guess the problem is the aftermarket sealers without the special inner circle material ???
I’m the only one having this prob ??