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BampaBus Samba Member
Joined: February 15, 2009 Posts: 194 Location: Florida
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Posted: Tue Oct 26, 2010 5:41 am Post subject: What Is This Part? |
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'73 Bus, 1700 engine.
This will be simple for everyone but me. What exactly is this part? I'm guessing oil pump maybe? Bentley shows something similar, but no location. Just an exploded view away from the engine.
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Location is passenger side, toward front of vehicle. Underneath.
My problem is it is leaking oil. I can't tell if it's from the seam, or from that tube that sticks out the bottom. I tightened the 6 screws at the seam that shows oil but it still leaks.
Is there a seal kit?
Should that tube have some sort of hose on it? Why is the tube there?
If I remove it to reseal, will it dump out all my oil?
Thanks, as usual. |
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hazetguy Samba Member
Joined: April 06, 2001 Posts: 10773 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Tue Oct 26, 2010 5:45 am Post subject: |
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it's a fuel pump.
there are gaskets you can replace.
more info here:
http://www.thesamba.com/vw/forum/viewtopic.php?t=415986 _________________ thebucket: I invested in hoodride, now DBD won't return my call?
hazetguy: invested?
thebucket: Yeah Haze, its where people put money into a company in hopes of a return on their money
Last edited by hazetguy on Tue Oct 26, 2010 5:49 am; edited 1 time in total |
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raygreenwood Samba Member
Joined: November 24, 2008 Posts: 21519 Location: Oklahoma City
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Posted: Tue Oct 26, 2010 5:46 am Post subject: |
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It is the original fuel pump for twin carbs. The curved tube was a vent tube. Yes, you can remove it and fit a solid metal plate over the hole. Ray |
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volksterii Samba Member
Joined: December 01, 2006 Posts: 425 Location: San Diego CA
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Posted: Tue Oct 26, 2010 5:48 am Post subject: |
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Fuel pump. Sounds like it needs a new gasket at the base. _________________ 71 Westy Hardtop, 1915
2005 Touareg V8 air susp. |
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hazetguy Samba Member
Joined: April 06, 2001 Posts: 10773 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Tue Oct 26, 2010 5:50 am Post subject: |
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raygreenwood wrote: |
Yes, you can remove it and fit a solid metal plate over the hole. |
and this is a subject of much debate re: pump pushrod and oil pressure. _________________ thebucket: I invested in hoodride, now DBD won't return my call?
hazetguy: invested?
thebucket: Yeah Haze, its where people put money into a company in hopes of a return on their money |
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BampaBus Samba Member
Joined: February 15, 2009 Posts: 194 Location: Florida
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Posted: Tue Oct 26, 2010 6:46 am Post subject: |
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Okay, makes sense. I assume it is mechanically driven by something inside the engine?
So, if I remove it to cap it or install new gaskets, I should expect to lose some oil?
Not a big deal, just want to know what to expect.
I'd prefer to leave it there instead of cap it. Are gaskets available somewhere, or I should make my own? |
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raygreenwood Samba Member
Joined: November 24, 2008 Posts: 21519 Location: Oklahoma City
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Posted: Tue Oct 26, 2010 7:42 am Post subject: |
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hazetguy wrote: |
raygreenwood wrote: |
Yes, you can remove it and fit a solid metal plate over the hole. |
and this is a subject of much debate re: pump pushrod and oil pressure. |
Its not that you cant remove the pump. Its that you cannot remove the bushing that the pushrod goes through because it creates pressure at the end of the galley. I'm pretty sure of that....but its worth asking around. I use carburettors for boat anchors and door stops anyway. Ray |
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hazetguy Samba Member
Joined: April 06, 2001 Posts: 10773 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Tue Oct 26, 2010 9:45 am Post subject: |
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raygreenwood wrote: |
hazetguy wrote: |
raygreenwood wrote: |
Yes, you can remove it and fit a solid metal plate over the hole. |
and this is a subject of much debate re: pump pushrod and oil pressure. |
Its not that you cant remove the pump. Its that you cannot remove the bushing that the pushrod goes through because it creates pressure at the end of the galley. I'm pretty sure of that....but its worth asking around. |
further reading on this subject, no need to beat a dead horse in this thread.
http://www.thesamba.com/vw/forum/viewtopic.php?t=160512
http://www.thesamba.com/vw/forum/viewtopic.php?t=344881 _________________ thebucket: I invested in hoodride, now DBD won't return my call?
hazetguy: invested?
thebucket: Yeah Haze, its where people put money into a company in hopes of a return on their money |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50350
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Posted: Tue Oct 26, 2010 1:12 pm Post subject: |
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I certainly wouldn't leave a leaky fuel pump in place if I wasn't intent on using it. Leaving unused stuff in place just makes it harder for the next owner to figure out what the heck is going on.
I guess someone could solve the question of how much oil is lost through the pushrod sleeve by running a tiny boroscope down the tube and seeing the size of the drilling into the end of the oil galley. There must be some pressure that builds up in that area or the fuel pumps wouldn't tend to leak much if ever. |
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BampaBus Samba Member
Joined: February 15, 2009 Posts: 194 Location: Florida
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Posted: Fri Oct 29, 2010 6:19 pm Post subject: |
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Finally had some time to inspect this closely. Put the bus up on a jackstand on that right rear wheel and pulled the tire. Crawled under it and cleaned up everything thoroughly. Then ran it a while. The oil leak is at the base of the drain/overflow tube.
That doesn't make sense, at least to me. I thought it was for fuel overflow. Oil leaks out?
Any good way to seal it without removing and capping the entire assembly? |
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