ATP* wrote:

"habbi" wrote in message
...
I have what I thought was a decent quality cambell hausfeld 1/2" gun which
is rated at 380 ftlbs. All fitting are 1/4" M style and hose is 25' 3/8"
ID.
It will not remove my lug nuts from my chev 1/2 ton truck. I tried
pressures
from 90 up to 120 psi with no luck. It removed a few of them but some will
not loosen at all. I am using 1/2" drive impact sockets as well. Anyway
are
these guns over rated, it is made in Taiwan. I noticed some ingersoll rand
and even sears brands rated up to 600-700 ftlbs, is this what I need. I
tried a friends Chicago pneumatic and it would not spin the nuts either.
Also there is an Allen set screw type plug in the side of the gun and it
says oil, how do you know how much to put in? Thanks

Campbell Hausfeld is trash, but the problem may actually be in your impact
sockets. If they are cheesy and whored out so that they do not fit tightly
on the lugnuts the play will suck the power of the impact gun up and even a
good impact gun will not perform well. A cheap impact gun should take
lugnuts off a 1/2 ton truck with no problem if the socket is good.

I picked up one of the Harbor Freight 1/2" impact / 3/8" ratchet combos
a while back when it was on a cheaper-than-dirt sale. When I first tried
them they seemed a little under powered, but I figured they would at
least save me some awkward hand cramping wrenching.

A month or two later I had to do brakes and replace some brake line on
my truck. I figured I'd give the HF wrenches a shot and amazingly enough
they worked beautifully. It seemed that they needed a minute or two of
use for the air motor vanes to seat or something, but after that they
had plenty of power.

The only fasteners that the HF impact wouldn't remove were the lug nuts,
but they actually required me to use a 4" cheater pipe on my 3/4" drive
ratchet with a lot of straining to remove (sounded like a damn gunshot
when each one finally broke free) so I certainly can't blame the HF
impact.

Pete C.