On Fri, 06 Jul 2012 05:15:31 -0700, Larry Jaques wrote:
On Thu, 5 Jul 2012 20:37:26 -0700 (PDT), Ivan Vegvary
wrote:
Picked up my impact wrench (1/2") and it stopped working. Pull the
trigger and all you get is air out of the exhaust. No rotation.
Is this worth tearing into? Could something be gummed up, not letting
air flow to wherever? I'm generally good at fixing things but I've
never been inside an air tool. All advise appreciated. BTW, the gun
does not have that many hours on it. 9 years with maybe changing two or
three sets of wheels per year.
Ivan, it's usually gumming of the old oil and is usually a quick repair.
I like to relube with Marvel Mystery Oil for reassembly.
Get the manual, note the parts in the exploded view for reference, and
note the way the vanes sit in the cylinder. One edge will usually be
more rounded. Soak the metal parts in lacquer thinner for half an hour,
brush them with it using a nylon brush and let them dry. Relube and
reassemble. All done!
Check the condition of the vanes, and the bearings.
The air tools I used to rebuild would get cupped on one side (presumably
they'd get cupped on both if you go both ways equally -- the impact
wrenches were used in manufacturing, so they mostly drove one way, and
the grinders -- well, they always go one way). If the vanes aren't nice
and flat where they're obviously supposed to be flat get a set of vanes
and replace.
Mostly I spent my time disassembling, cleaning, replacing vanes if
necessary, and reassambling. But if you spin the bearings and get grindy
noises instead of a smooth "whizzzzzz" then replace them, too.
I'd tell you to make sure the impact head is in good shape, too, but it
doesn't sound like that's your problem, and we never got that far into
the tools anyway so I have no experience.
--
My liberal friends think I'm a conservative kook.
My conservative friends think I'm a liberal kook.
Why am I not happy that they have found common ground?
Tim Wescott, Communications, Control, Circuits & Software
http://www.wescottdesign.com