vehicle in question has a Ford 9.75 rear axle.
Replaced pinion seal, and flange due to leakage and a small wear scar on the flange. Marked the nut to pinion with 2 different color markers, but upon tightening of the nut I couldn’t get the nut to line up with the marks. They are about 1/4 inch off on the “ loose side” from being spot on.
Used a medium strength Dewalt 1/2”battery impact to tighten the nut. Stopped as soon as the gun started hammering for fear of crushing the sleeve further. Backlash feels fine when turning the flange by hand. I put the gun on the nut one more time to see if it would turn for just a second, but it started hammering immediately so I stopped.
I counted the threads before hand and there were 2 exposed before and after the repair. I’ve done 4 or 5 of these in the past and never had an issue getting the marks to line up, and I’ve always tightened the nut just a hair more past the marks.
Anyone ever see that happen before? I know you are supposed to measure rotational torque, but I don’t think many people do it that way for a simple seal replacement.
Replaced pinion seal, and flange due to leakage and a small wear scar on the flange. Marked the nut to pinion with 2 different color markers, but upon tightening of the nut I couldn’t get the nut to line up with the marks. They are about 1/4 inch off on the “ loose side” from being spot on.
Used a medium strength Dewalt 1/2”battery impact to tighten the nut. Stopped as soon as the gun started hammering for fear of crushing the sleeve further. Backlash feels fine when turning the flange by hand. I put the gun on the nut one more time to see if it would turn for just a second, but it started hammering immediately so I stopped.
I counted the threads before hand and there were 2 exposed before and after the repair. I’ve done 4 or 5 of these in the past and never had an issue getting the marks to line up, and I’ve always tightened the nut just a hair more past the marks.
Anyone ever see that happen before? I know you are supposed to measure rotational torque, but I don’t think many people do it that way for a simple seal replacement.