benett oil pump(suntec

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Old 09-24-11, 07:15 AM
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benett oil pump(suntec

i installed a used furnace.when i fired it up it blew the seal(suntec av2a 7116).originally it was a 2 pipe system.my service guy said i didnt need 2 so i stayed w/one.since the pump ran before and was in good shape,i cant figure why it blew.i dont want the new one doing the same.(the only thing i changed was an inline check valve).the manufacturer of the new one says it should be fine.im real shaky !!!!!
any ideas???joel
 
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Old 09-24-11, 09:12 AM
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You forgot to remove the bypass plug.

http://www.beckettcorp.com/protect/t...104BAFGR04.pdf Page 12.
 
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Old 09-25-11, 06:49 AM
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im confused.if i remove the bypass plug,doesnt it leave an open hole for fuel to pour out of?
 
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Old 09-25-11, 11:31 AM
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The bypass plug is internal to the pump. You need to remove an external plug (usually from the return line port) to access the bypass plug. You then replace the external plug.

It would help if you told me what brand and model pump is installed on the burner.
 
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Old 09-25-11, 05:20 PM
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Furd,
You are absolutely correct in your advice. BTW, the pump is a Suntec A2VA-7116.
He will need to remove the hex plug on the bottom return port then use a 5/32" allen wrench to remove the by-pass plug then reinstall the hex plug.
 
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Old 09-25-11, 06:02 PM
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Thanks, Grady.

Do not use Teflon tape when replacing the external plug. You must use a pipe joint compound suitable for fuel oil. My preference is Permatex Number 2.
 
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Old 09-26-11, 05:20 AM
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YES!!!!grady,thats the answer ive been hunting for weeks!i did remove the 'return' plug but didnt see anything further inside.i will look again and let you know how i made out....thanx...joel
ps..does anyone know where i can get a rebuild kit for the A2VA 7116?
 
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Old 09-26-11, 07:31 AM
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Joel,
I did manage to find the shaft seal but in nearly 25 years in the trade, I've never replaced one. There may be specialized tools involved. If you want to try, you can get the seal here: Patriot Supply - SP-367

As Furd suggested, the #2 Permatex is exactly what I would use.
 
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Old 09-30-11, 07:47 AM
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thanx grady-i double checked the new one-installed it-bled it and holy moly it worked
 
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