Sears Air Compressor Flapper Valve Replacement


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Old 06-12-11, 04:10 PM
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Sears Air Compressor Flapper Valve Replacement

I bought an old Sears two-cylinder air compressor and it works great except one of the flapper valves is broken and it leaks down over about an hour.

I pulled the cylinder head (that's how I found the broken flapper) and found the 3/16 hex screws holding the remainder of the flapper are so shallow-headed I can't get a bite on them with any tool. They look like brass, too.

Wonder if anyone's dealt with this before?
 
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Old 06-12-11, 06:34 PM
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Cut the slot deeper with thin disk on a Dremel. Soak the screw with PB Blaster penetrating spray, then try it. Insert your screw driver and tap it with a light hammer while putting unscrewing motion on the driver.
 
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Old 06-12-11, 07:22 PM
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That would be a good approach if this were a slotted screw instead of a hex head.
 
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Old 06-13-11, 04:53 AM
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I just removed 8 of those screws yesterday from a old 2 hp compressor from sears .Here is what I did to get them out. I wire brushed the nut area
lightly to clean any debris from around the nuts edges of the nuts. A hand wire brush not a power one.
I then used a proper sized nut driver . Hand nut drivers tend to have more of a flat cut across their surface making fit tighter to the nut sooner with little slop. I then applied a lot of down force on the nut and rusty broken flapper and much to my surprise all 8 of them came out.
You might try grinding a old 3/16 socket down on the end so that the entry to the socket is not rounded off any. They tend to be rounded some.

Good luck.
Larry
 
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Old 06-13-11, 05:32 AM
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Larry, that's good improvisation. Thank you.
 
 

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