My Coupe project

[Tractor Dave]

It's a hefty belt driven monster with a big tank but it recently sprung a pin hole
My fault for not draining the water daily for some 20 years of ownership.
Now, I thought I would treat myself to a new one but got a shock when I saw current prices
So, despite knowing it's risky, I intend to fill the hole with weld

[steve briance]

What sort of air supply are you using? As the owner of a proper lift, i imagine you have proper air as well...

[Tractor Dave]

I had a lot of dust issues with my cabinet, and it's all down to the massive amount of air your pumping into the cabinet. I upgrade (drilled another 50mm hole) my cabinet to have twin 50mm outlets and the dust has reduced by a massive amount. Also fitted some traps in the pipe work to catch some of the escaping shot.

1-pipes.jpg

2-traps.jpg

Brilliant

[B5NUT]

I had a lot of dust issues with my cabinet, and it's all down to the massive amount of air your pumping into the cabinet. I upgrade (drilled another 50mm hole) my cabinet to have twin 50mm outlets and the dust has reduced by a massive amount. Also fitted some traps in the pipe work to catch some of the escaping shot.

1-pipes.jpg

2-traps.jpg

[Tractor Dave]

Got my blasting cabinet set up.
Works quite well but makes a lot of dust as the door seal isn’t brilliant.



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[Tractor Dave]

Very good

You are restrained in removing the seals, think I managed to just pry them out with a pry bar

You painting the diff?

Probably will

[Bowie69]

Very good

You are restrained in removing the seals, think I managed to just pry them out with a pry bar

You painting the diff?

[Tractor Dave]

Quick update whilst I warm up having a tea break.
There was a nice clear mark where the larger old seal sat. I put the new seal in to match. I used the old seal back to front to gently drift in the new seal.
On the other side I used a 46mm socket and marked the position of the old seal.


Then used it to drift in the new seal.

This is how I removed the old seals.


The flanges got a clean up and coat of zinc.


Now torque settings. Set my wrench to 10nm. Once I reached that I re set to 25nm and went for the 90’. The 25nm was reached at about 80’. So, figure stated above appears correct. This was using new bolts lightly oiled.


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[SteveH]

I found no need for this tool, with a wiggle the input flange just came off.

[Bowie69]

I need to do the input shaft seal on my diff, so I need to find VW 391 tool. Having taken a quick Google there doesn't appear to be many around for sale.

I found no need for this tool, with a wiggle the input flange just came off.

[LSG]

I didn't measure
It was about 5mm inside the edge. There is a stop further in. So it doesn't go to the stop?
Hopefully, there is a mark left where the old seal sat. Have you got the Bentley measurement?

I did the seals on mine a fews years back now and didn't know not to pust the sael all the way in and guess what it leaked. Had to replace it a week later .. So do messure it fella. . Regards Lynn

[SteveH]

I need to do the input shaft seal on my diff, so I need to find VW 391 tool. Having taken a quick Google there doesn't appear to be many around for sale.

[Tractor Dave]

Thanks very much. I don't plan on buying the tool. I managed without before.
Not sure about 25nm? And 2.75ltrs of oil? Obviously refers to gearbox.

[Bowie69]

OK here goes the Bentley pages for the diff seals:

Screenshot 2022-01-05 at 21.13.04.jpg Screenshot 2022-01-05 at 21.13.56.jpg Screenshot 2022-01-05 at 21.14.18.jpg Screenshot 2022-01-05 at 21.14.27.jpg

....and a tool that has sold on ebay, with pics:

Genuine VW AUDI SPECIAL TOOL 3066/1 mounting device for Sealing Ring | eBay

Tool is 3066/1 for post 86 cars, and 3066/2 for pre 86, as noted here:

Vag 3066 (c)http://www.s2-audi.co.uk

With some other good pics, looks like the 3066/1 is deeper than the 3066/2.... so 8mm, maybe?

Not sure if any of that actually helps!

[Bowie69]

Hmm, perhaps, it is 3066 for the big seal, sorry!