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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Sat Jul 01, 2017 9:42 am Post subject: Oil leaking from transmission side of driveshaft? |
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I woke up to about a 12" puddle of oil this morning. Upon inspection it looks like it's leaking from where the driveshaft meets the transmission. In this pic, I've cleaned off all the oil, but the arrow points to where it appeared the source was. Is there a seal behind this? I have to replace the boots anyways, but figured that housed grease in these IRS ends and replacing the boots wouldn't sole this oil leak. Thoughts?
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51156 Location: Surrey B.C. Canada, but thinking of Ukraine
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50353
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Posted: Sat Jul 01, 2017 9:50 am Post subject: Re: Oil leaking from transmission side of driveshaft? |
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A bit of seepage isn't a big deal so you don't have to act immediately, but do plan this in. You also need to replace at least that one cracking axle boot.
You might also consider doing the inner and outer rear wheel bearing seals at this point. |
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Sat Jul 01, 2017 11:07 am Post subject: Re: Oil leaking from transmission side of driveshaft? |
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Perfect! Thank you. I cleaned everything off and just returned from a 15 minute jaunt down the freeway so I can confirm the leak point. Of course nothing is leaking now, which makes me think I should check the hypoid level . Is this a job worth tackling without the specialized tools? I see some used makeshift PVC and other tools with various levels of success. _________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50353
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Posted: Sat Jul 01, 2017 12:26 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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About the only specialized tool you need is a tool to pop the seal out and a pair of duckbill snapring pliers. You can improvise if you want but a seal puller will save a lot of aggravation and doesn't cost much. Some pullers are pretty junky though so buy with care.
These seals can weep for years hurting little, as I suggested above you should consider doing other work at the same time that requires having the axle removed to do.
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Tue Jul 11, 2017 5:29 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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A lot of heavy, gritty sediment, but seals don't look horrible so far. Waiting on parts, but here is where things are at:
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51156 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Tue Jul 11, 2017 6:08 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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How does the outer edge (snout) of the drive flange look where the seal rides against it? _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Tue Jul 11, 2017 7:29 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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busdaddy wrote: |
How does the outer edge (snout) of the drive flange look where the seal rides against it? |
Smooth. The marks shown below cannot be felt.
Clearly leaking though. I haven't drained the fluid yet. I figured I didn't have to until I got to the inner seal. It only appears to be leaking from one side.
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51156 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Tue Jul 11, 2017 7:34 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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lintbrush wrote: |
Smooth. The marks shown below cannot be felt. |
I was more interested in the side of that area. (you may want to clean it up first) _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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skills@eurocarsplus Samba Peckerhead
Joined: January 01, 2007 Posts: 16886 Location: sticksville, ct.
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Posted: Tue Jul 11, 2017 7:48 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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^^^^X2
make sure the sealing surface on the flange hasn't had a groove worn in it.
also, there is a big o-ring behind that diff nut that likes to bleed oil as well _________________
gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
Jake Raby wrote: |
Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
Brian wrote: |
Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
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airschooled Air-Schooled
Joined: April 04, 2012 Posts: 12728 Location: on a bike ride somewhere
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Posted: Tue Jul 11, 2017 8:36 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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Don't drain the fluid until both sides are complete. You want the fluid to flow out of the junction so debris has a harder time finding its way in. Once you've done all your work (both sides) then consider draining or topping off to complete the job.
Like the posters above say, your output flange sealing surface should be groove-less and shiny clean.
When reinstalling the circlip, make sure that it fully seats; no sense in having the flange pop off down the road somewhere.
Robbie _________________ Learn how your vintage VW works. And why it doesn't!
One-on-one tech help for your Volkswagen:
www.airschooled.com |
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Wed Jul 12, 2017 4:45 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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busdaddy wrote: |
lintbrush wrote: |
Smooth. The marks shown below cannot be felt. |
I was more interested in the side of that area. (you may want to clean it up first) |
Okay, here are pics of the snouts. The wear lines are faint and hard to feel.
Left:
Right:
Also, when I pulled the right drive flange out (I have them just placed in there just to keep them covered) I'm guessing this that I found on the ground is the thrust/spring ring? I haven't pulled the final seal out yet so wasn't expected to see this ring quite yet.
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51156 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Wed Jul 12, 2017 5:27 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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The ring is responsible for the marks on the ends of the snouts so you can figure out where they came from by that.
While you await the new seals shine up the seal areas on those flanges with steel wool or super fine sand paper so they are like a mirror and smooth as a baby's ass. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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mikedjames Samba Member
Joined: July 02, 2012 Posts: 2745 Location: Hamble, Hampshire, UK
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Posted: Thu Jul 13, 2017 1:09 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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On my transmission the oil leaked because the bearing was a little loose and the splined shaft could move from side to side a little and let oil pass the seal at speed.
I suspect this was from when the transmission was reconditioned and it was not exactly set correctly.
I tightened the side plate maybe a millimetre of rotation and replaced the seals and it has not leaked since. _________________ Ancient vehicles and vessels
1974 VW T2 : Devon Eurovette camper with 1641 DP T1 engine, Progressive carb, full flow oil cooler, EDIS crank timed ignition.
Engine 1: 40k miles (rocker shaft clip fell off), Engine 2: 30k miles (rebuild, dropped valve). Engine 3: a JK Preservation Parts "new" engine, aluminium case: 26k miles: new top end.
Gearbox rebuild 2021 by Bears.
1979 Westerly GK24 24 foot racer/cruiser yacht Forethought of Gosport.
1973 wooden Pacer sailing dinghy |
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Fri Jul 14, 2017 10:40 am Post subject: Re: Oil leaking from transmission side of driveshaft? |
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busdaddy wrote: |
The ring is responsible for the marks on the ends of the snouts so you can figure out where they came from by that.
While you await the new seals shine up the seal areas on those flanges with steel wool or super fine sand paper so they are like a mirror and smooth as a baby's ass. |
Duh, that was easy...
I didn't see it mentioned anyplace, but based on the snout wear marks and the matching marks on the washer it appears the narrower side of the washer faces the transmission?
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3899 Location: Seattle, WA
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Posted: Fri Jul 14, 2017 3:34 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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lintbrush wrote: |
I didn't see it mentioned anyplace, but based on the snout wear marks and the matching marks on the washer it appears the narrower side of the washer faces the transmission? |
That ring is called "thrust ring" in Type 2 Bentley manual, "spacer ring" in Type 1 manual. It's shown in Type 2 manual, but no mention of correct orientation.
Type 1 manual specifies that flat side goes toward CVJ flange, and rounded (narrower side, as you put it) side towards differential. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
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lintbrush Samba Member
Joined: October 10, 2013 Posts: 269 Location: Campbell, California
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Posted: Mon Jul 17, 2017 11:37 am Post subject: Re: Oil leaking from transmission side of driveshaft? |
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Finished. Not the funnest, cleanest or exciting project. Hardest part was getting the seal to seat. I used the 46mm socket and mallet, but realized after I was done I could have put a bolt/washer/nut thru it and used it as a press.
For the benefit of others tackling this in the future, here are a few photos...
The seals are definitely taller than the originals by ~7mm:
New seal in:
New sidescrew lock/coverplate:
Cleaned up the drive flange :
Final drive seal...done.
_________________ 1970 Westfalia Campmobile - SF Bay Area
https://www.instagram.com/campishome/ |
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Tcash Samba Member
Joined: July 20, 2011 Posts: 12844 Location: San Jose, California, USA
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Posted: Mon Jul 17, 2017 12:49 pm Post subject: Re: Oil leaking from transmission side of driveshaft? |
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For the future
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