Be carefull with your impact wrench.... - Page 2

WICKEDOWESIX · 11-03-2009, 09:17 AM

Quote:

Originally Posted by rynomx785

I worked at a Big O for a year and a half. I could be remembering wrong though. 140 is a lot for a half ton truck.

Yeah 140 is used on the dmax diesel trucks too since GM uses the same wheel studs for the 1/2 ton and 3/4 tons just that the 3/4 diesel is 8 lug not 6.

rynomx785 · 11-03-2009, 09:57 AM

Quote:

Originally Posted by WICKEDOWESIX

Yeah 140 is used on the dmax diesel trucks too since GM uses the same wheel studs for the 1/2 ton and 3/4 tons just that the 3/4 diesel is 8 lug not 6.

I see. I guess I was under torquing mine the whole time. . .

bestatchess · 11-03-2009, 10:35 AM

I don't understand how a decent pneumatic impact wrench won't take lug nuts off that the same wrench put on. I thought they were all higher reverse torque than forward. Mine would certainly break the studs or strip the threads at a minimum.

WICKEDOWESIX · 11-03-2009, 11:06 AM

Quote:

Originally Posted by bestatchess

I don't understand how a decent pneumatic impact wrench won't take lug nuts off that the same wrench put on. I thought they were all higher reverse torque than forward. Mine would certainly break the studs or strip the threads at a minimum.

They do have a slightly more TQ in reverse.. But when a stud fails due to over TQ there is no way it will come off with impact gun unless you have the IR Titanium which has 1000lbs ft of TQ... Then you will be ripping **** up LOL

MotoJack · 11-04-2009, 08:46 AM

Quote:

Originally Posted by bestatchess

I don't understand how a decent pneumatic impact wrench won't take lug nuts off that the same wrench put on. I thought they were all higher reverse torque than forward. Mine would certainly break the studs or strip the threads at a minimum.

Yes,I was wondering the same thing.I of course was using the same impact gun with the same 115 psi and it seems that they should have come off.I am going to use my torque wrench for final tightening from now on and put them all at 100 ft/lbs.which is splitting the difference between what Nissan calls for (98) and what the tire shops torque charts say (105).

Discount Tire charts: Wheel Torque Chart - Discount Tire

bestatchess · 11-12-2009, 12:43 PM

Quote:

Originally Posted by WICKEDOWESIX

They do have a slightly more TQ in reverse.. But when a stud fails due to over TQ there is no way it will come off with impact gun unless you have the IR Titanium which has 1000lbs ft of TQ... Then you will be ripping **** up LOL

I have the IR 2135 QTIMAX. Yeah, they allege 1,100 ft-lb reverse NBT and 550 forward. Stuff comes off or it strips or breaks.