Top positive review
41 people found this helpful
Must follow setup to get max torque
on June 27, 2014
Crankshaft bolt on my 1997 Toyota is nasty to remove. It is tightened to 283 ft/lbs of torque. My Craftsman 1/2" impact gun only creates 580 ft/lbs of losening torque and was not doing the job. Couldn't use a 3/4 driver because there's not enough space. Therefore, only a 1/2 driver will fit that space. I didn't want to use a 6' cheater pipe because when the friction is released, I run the risk of denting my fender no matter how well I pad the bar with foam and blankets around the fender. I decided to get this gun due to the 1295 ft/lbs of loosening torque.
First, I hooked the aircat up to my regular 50 foot air hose. Wasn't sure how much pressure loss but thought I'd give it try. I kept the gun on it for a while and no movement.
Sprayed some Maltby penetrant to help lubricate and remove rust off the threads. Came back 3 days later and still nothing :(
Called their support and they recommended that I crank up my regulator to 150 PSI to compensate for the long hose since the rating for this gun is 120 PSI for 1295 ft/lbs torque at the gun, rather than at the regulator. No luck.
If you read the instructions, they mention the following key instructions.
1. Don't use a hose longer than 25'
2. Don't use a quick connect at the gun.
Both of these things restrict air flow to the gun causing the gun to not perform at optimal range.
So to be safe, I bought a short 6' hose with 1/2" diameter, put on the adapters so that it's 1/4" npt straight to the gun and the other end 1/4" npt quick connect to the compressor. Set the regulator at 150 PSI
This is one insane bolt to remove because message boards were saying that you need about 1000 ft/lbs of torque to get this bolt off.
With the new setup, I can definitely hear and feel the amount of extra power.
At first, the bolt still didn't budge. It took me about 4 tries within the first minute and the bolt came off finally!
So my advise to you is to make sure that your setup is on a very short hose and you'll love this gun.