copperworx

my boss told me the other day when following me down the interstate that my truck looked like the rear end was "dog legging" or kinda sideways with the front
when i was going straight. i know the rear axle was replaced before i bought it. i am wondering how i can check that or attempt to fix it. also, when i am driving along and completely let off the accelerator the rear end kicks a little sideways. i am assuming the two are related?

BILTIT

Broken center pin in a leaf spring most likely.

Measure from front and rear of wheel well to tire on each side, if one side is alot different than the other than a centre pin has sheared.

copperworx

thanks, i will check it out on the jobsite in the morning.
i have a newbie question also-i see the word getrag alot on this site,is that the 5-speed transmission that came in the 1st generation cummins ?

bobva

Getrag 5sp yes

93-12Smoke

What about bad spring bushings or loose u-bolts?

BILTIT

Could be those too but i'm not sure if they would make the problem bad enough to be visible from behind, possible though. Definitely worth a check.

simplysmn

also miss matched offset on the wheel's from front to back will do that also

Jim Lane

I used to be a mechanic for a roofing company and the guys were always hitting the curbings with the duals while backing over the curbing and were always shearing the pins on the Internationals and LN's.
I had recovered one truck that took almost the entire freeway lane to drive straight.

A couple of times they hit so hard they bent the spring near the front eye.

Jim