"SteveT" wrote in message
...
On Thu, 02 Oct 2008 07:13:58 -0500, dpb wrote:

wrote:
how do the spec-s of an air impact wrench relate to the air
compressor?
i need to loosen a crankshaft pulley bolt that is torqued at 134 ft-
lb. on a 1998 honda civic LX. i have a sears craftsman 1.5hp 4-
gallon @90psi air compressor. i don't yet
have an air impact wrench. what should i look for in terms of psi
when i go to buy one, such that i can use that air compressor to drive
the impact wrench to loosen the bolt? tia.

The problem is you'll have adequate pressure but highly unlikely to have
sufficient volume (cfm) to drive a sizable impact wrench. Most will
need in the 7-9+ cfm range at 90-100 psi to come close to the spec's
you're wanting.

Fastest way to get that bolt off is a 6 point 1/2" socket attached to a
long breaker bar extended with a piece of pipe. Attach and bump the
starter.
Used this method repairing Saturns. Works every time.



If you can get a solid 6 point socket on it with a good breaker bar. Hit the
breaker bar with a large rubber hammer. It will come off. If you have the
room, a good impact wrench will get it off. Good and made in China are not
synonymous BTW: I have a 30" long Snap-On breaker bar. It would be
worthless for this job as it's springy. The breaker bar needs to be solid.

Reminds me of a mechanic up the street. Was trying to get the axle nut off
an old Studebaker. Put a large pipe wrench on the nut. Told his helper to
put it in gear and let the clutch fly while he stood on the wrench. Tossed
him about ten feet, broke his arm and shoulder. The helper put it in
reverse

Al