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  #11  
Old 11-28-2016, 11:49 AM
mbuehler mbuehler is offline
 
Join Date: Jun 2016
Location: Tacoma
Posts: 77
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Quote:
Originally Posted by Dean Pichon View Post
I noticed your pump installation puts the vent fitting very close to the firewall (touching?). I have the same issue in my -4. The other day, a mechanic suggested I could remove the pump, disassemble it, and "clock" the spacer that includes the vent to put it in a better location. In my case, that would be to clock it such that the vent moved to the space in the firewall cut-out that provides clearance for the prop governor.

Has anyone done (or considered) this?

Thanks,
I'd be interested as well. It is so close that bolt is beveled on the other side so that it won't touch the firewall (maybe a mm of space between them). There is no way to remove it with the pump in place (which probably explains the attempted fix in the past).
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  #12  
Old 11-28-2016, 07:23 PM
Achelis Achelis is offline
 
Join Date: Sep 2005
Posts: 14
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After years of trying to chase a persistent oil leak, I discovered that the vent also 'relieves' oil from a cracked or otherwise damaged fuel pump diaphragm. Replacing the pump required modifying (shortening) Allen wrench sockets due to tight access / proximity to firewall, but it cured the leak!
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  #13  
Old 11-28-2016, 08:14 PM
sf3543 sf3543 is offline
 
Join Date: Jan 2005
Location: San Antonio, TX
Posts: 1,024
Default Van sells that part

It is: F OVERFLOW PLUG 1/8". Price = $10.70
However, i would not reinstall it as yours currently is.
The part comes with a copper tube, just like yours, but i would simply slide some flexible tubing over it, doing away with the AN fittings, and route it so any fuel would be dumped overboard in an appropriate location.
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