Author Topic: Air Wrench Repair?  (Read 155 times)

Online wortluck

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Air Wrench Repair?
« on: 19.12. 2020 18:08 »
Hi folks, hope you're all ok.

Bought myself a s/h air wrench (Bergen/USPro) but it's crap.  Any ideas how to fix it or increase the power.  I've stripped it down, cleaned and oiled everything and am working it from a small compressor (8 Bar/117psi) which I'm told should be enough.  I got a full refund from the vendor on Ebay (really decent bloke, said I could keep it and get it working or bin it).  The vanes look a bit worn, but everything else checks out.  The vendor said he'd been using it with a biggish workshop compressor so may need more pressure??
'62 Flash
'49 B31
'59 BMW R60
FS1-E, YB100, RS100, RD200DX,250DX,350B, XS750



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Online RDfella

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Re: Air Wrench Repair?
« Reply #1 on: 19.12. 2020 18:17 »
Pressure not so much an issue (though I'd prefer around 150) as volume. How many CFM does your compressor supply, and what does the tool require? And what size bore are your hoses? 5/16"? 3/8" is preferable.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Online wortluck

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Re: Air Wrench Repair?
« Reply #2 on: 19.12. 2020 18:52 »
Cheers RD.  CFM is around 6-7, tool requires about 5.  Hose is 5/16 I think, will have to check.  Have read somewhere that turning the regulator down can build CFM value??
'62 Flash
'49 B31
'59 BMW R60
FS1-E, YB100, RS100, RD200DX,250DX,350B, XS750



"I may disagree with what you have to say, but I shall defend to the death your right to say it."
Evelyn Beatrice Hall