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Chasing an Oil Leak - Gaskets? Seals?
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airschooled
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PostPosted: Sat Aug 17, 2019 10:18 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

raygreenwood wrote:
Indian head also works great with seals like this where the fit is difficult. You have to work fast on warm days though....that stuff tacks up and freezes fast. Ray


Yes! I’ve used it to cure a variety of ill-fitting parts that I have no choice with. It hasn’t let me down.

Just look for “Lion Head Shellac” now, as the name and logo changed in 2018. Some time this year the formula changed and it is now more transparent. I have not changed my application methods and I have not had any problems, but it is harder to see the evenness of applications.

Robbie
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Abscate Premium Member
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PostPosted: Sun Aug 18, 2019 3:41 am    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Smitty,

Don’t be tempted and take your fan apart. Rebalancing it is a subtle task, possible but a pain.

Nice track down and jury rig on the seal replacement.
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PostPosted: Sun Aug 18, 2019 7:17 am    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Thanks for the tips guys! The books I have only vaguely mention these seals, they only reference them in pictures:

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asiab3 wrote:
Nice job getting in there and getting it done.

When the new fan seal arrives, it should not slide into the bore without a bit of work. Find a big-ass socket JUST smaller than the seal and use it as a drift to tap it in with a hammer. This is one time I would use a hardenening sealant like Permatex Aviation. Usually I would use non-hardening sealants like Curil, but if the seal just slides into place you’re going to need to hold it somehow. You might eventually have to order a custom seal for the bore. If this happens, let us know. We have rescources for stuff like this.

Make sure you spread a thin layer of anti-seize on the crank/fan hub junction. If your repair works you may not be in there for a long time. Smile

Robbie


Thank you! Yea, kind of worried that the new one will just slide in like this old one did; wish there was a vintage vw parts store near me, so didnt have to wait for the shipping.

timvw7476 wrote:
There is an O-ring in there too, deep on the crank snout.


Thanks for the head up on the o-ring, because I had no idea theres one in there. I can't even find where to buy a replacement, the only place seems to be:
https://vwparts.aircooled.net/Fan-Hub-O-ring-Type-4-Engines-021-119-125A-p/021-119-125a.htm

BusDepot doesnt seem to carry them, unless they only include them in the gasket sets..

TomWesty wrote:
Wait a minute.... You took a sawzall to your fan hub? Laughing


Nothing a sawzall cant fix Wink
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PostPosted: Sun Aug 18, 2019 7:23 am    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

asiab3 wrote:
raygreenwood wrote:
Indian head also works great with seals like this where the fit is difficult. You have to work fast on warm days though....that stuff tacks up and freezes fast. Ray


Yes! I’ve used it to cure a variety of ill-fitting parts that I have no choice with. It hasn’t let me down.

Just look for “Lion Head Shellac” now, as the name and logo changed in 2018. Some time this year the formula changed and it is now more transparent. I have not changed my application methods and I have not had any problems, but it is harder to see the evenness of applications.

Robbie


Oh man!...thanks for that info! I am working through a 3oz bucket of it. I would have had to really look when it was time to buy new.

The one thing about Indian head/Lion Head and similar....is that once you use it....it does not come off...so a re-do or reseal usually means at tear down time. Ray
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PostPosted: Sun Aug 18, 2019 9:17 am    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

might want to check those motor mounts while you are there. Leave the oil pump alone.

As said by others, find that O-ring because you need to replace it too.
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PostPosted: Wed Aug 21, 2019 9:43 am    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

[quote="smitty1976bus"
Thank you! Yea, kind of worried that the new one will just slide in like this old one did; wish there was a vintage vw parts store near me, so didnt have to wait for the shipping.

[/quote]

You don't need to wait.

Here is a list of seal and packing suppliers in your area. A good seal house will be able to supply the correct parts in minutes to you.
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smitty1976bus
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PostPosted: Wed Aug 21, 2019 7:13 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Abscate wrote:
Smitty,

Don’t be tempted and take your fan apart. Rebalancing it is a subtle task, possible but a pain.


Good advice. Less work the better!

SGKent wrote:
might want to check those motor mounts while you are there. Leave the oil pump alone.

As said by others, find that O-ring because you need to replace it too.


Motor mounts are new; well probably 3 years old. Back when I put the motor into the bus... Back when i should have changed every single seal and gasket when the engine was out of the vehicle... If only I knew what i know now back then.

ToolBox wrote:
You don't need to wait.

Here is a list of seal and packing suppliers in your area. A good seal house will be able to supply the correct parts in minutes to you.


That's a good idea, theres alot around me too. I didn't even think of going to one of them, dang. Parts came in the mail today too, haha.
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smitty1976bus
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PostPosted: Wed Aug 21, 2019 7:26 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Seals and o-ring came in the mail today Very Happy

The crank seal look a little different than the original one.

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But it seems to fit very nicely:

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It doesn't just slide in, like the old seal did, which was a hug relief. Engine case is in good shape and looks like this seal will work. No need to add any shellac or sealers. Made a make-shift driver, since I had no large sockets to fit around the seal:

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Took a little while, but the seal was driven in, flush with the metal:

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Slide the new o-ring in, filled up the crevasse with oil (not sure if needed to be, or not, but thought it should be), and put the hub back on (with thread lock and torqued to 23 foot pounds)

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And ta-da!

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All done, and hopefully does the trick. Don't have enough time to button up everything tonight (dang days getting shorter). I'll have to finish up later and see if anything leaks out.
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PostPosted: Wed Aug 21, 2019 7:35 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

good job
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PostPosted: Sun Aug 25, 2019 7:12 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Thank you!

Finaly was able to button it all up, spruced up the engine bay a bit:

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And boom, no oil dripping!
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Well.... not as fast anyways. Seems my engine just wants to leak oil. After the start up, after the repair, I blew a valve cover gasket. Maybe not blew it out, but it was leaking pretty bad from the drivers valve cover. (was fine before the repair) Replaced that, and all seems to be fine now. I don't know much about it, but could I have a high positive crank case pressure? I noticed that there's a lot of pressure coming out of my oil filler neck (had it off to check something). No idea whats normal though. Back to the research table! Cool
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PostPosted: Sun Aug 25, 2019 7:45 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Glad I was able to help
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PostPosted: Wed Aug 04, 2021 1:19 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

So how can you remove a stuck fan hub seal. Mine is way stuck, and at this point it's definitely been damaged enough to HAVE TO come out.
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telford dorr
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PostPosted: Wed Aug 04, 2021 1:33 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

Slide hammer with a hook of some sort on it?
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PostPosted: Wed Aug 04, 2021 1:33 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

(double post)
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Last edited by telford dorr on Wed Aug 04, 2021 8:19 pm; edited 1 time in total
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PostPosted: Wed Aug 04, 2021 2:00 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

https://www.amazon.com/Lisle-56750-Seal-Puller/dp/...mp;sr=8-26
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PostPosted: Wed Aug 04, 2021 2:07 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

^ what Telford said.

A seal removal tool also works. Or you can use a screw and screw it into the face of the seal, then pull the seal out with some pliers by the screw.
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PostPosted: Wed Aug 04, 2021 2:40 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

cmonSTART wrote:
https://www.amazon.com/Lisle-56750-Seal-Puller/dp/...mp;sr=8-26


Just be aware that all of these "T" shaped seal pullers are not created equal. Some are pretty flimsy. I hit a half dozen FLAPS and bought what looked to be the sturdiest puller. Sorry don't remember the brand at this point.
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PostPosted: Wed Aug 04, 2021 3:06 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

I have a set of these too which work. The foot on them is a bit flatter, too, so less chance of damaging something. They don't always fit.

https://www.amazon.com/4pcs-Steel-Heel-Aligning-Ro...amp;sr=8-2
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PostPosted: Wed Aug 04, 2021 6:25 pm    Post subject: Re: Chasing an Oil Leak - Gaskets? Seals? Reply with quote

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[img][/img]
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