well..I thought mav.s didn't have posi track(?) rear ends, and that they only had one real drive wheel.. however, I always noticed that my rear was quite large. the other day while warming my car up it kicked into reverse(shoddy column shift) and what happened stunned me.. both wheels spun out.. they actually dug holes in the dirt about 3/4 of an inch deep..I am absolutely sure of this, as a friend of mine whom was with me confirmed it..well, at least now i may have some ideas as to why my rear end is about 2 inches higher then other mavs I've seen...anyways, any ideas as to what rear end this is?? was it original equipment? it looks like it's been in there for a loooonnngg time..
jack the rear of the car up and spin one wheel. If the wheel on the other side spins in the opposite direction it is an open rear. If it spins in the same direction it is a trak-lok. Obviously, the tranny needs to be in neutral.
I did that when I was checking the rear brakes..it spins the same way...so that means it's a trac lock i guess.. rear ends are not my best thing...my father, the mechanic, never got the chance to teach me much about rear ends before his death.. I was always rebuilding all carbs at his shop.. rebuilt a few pontiac engines.. a few chevys.. but other then that, i never learned much else.anyways..thanx for the help there..
If you are still unsure, while the car is up in the air have a friend try to hold one rear tire "in place" while you turn the other. If it isn't a worn out trac-lok there will be some resistance! As I recall the clutches "break loose" at about 80-100 ft/lbs of pressure so the car can turn a corner without dragging the inside tire!
You guys sure about your testing procedure?? I thought Posi-rears when jacked up will turn the wheels in opposite directions ...
DM, I'm posi-tive, no pun intended! Another way to test it is to jack one side up and see if you can turn that tire, again be sure it is in neutral. DO NOT start the car when trying this in case it is a posi. You'll launch the car! The clutches in the rear "lock" the axles so they rotate in the same direction. When enough pressure is applied these clutches disengage (slip) allowing one wheel to turn at a different rate than the other--ie so you can turn a corner without dragging the inside wheel with you (or would it be the outside wheel). Anyway, the outside wheel is trying to turn faster than the inside.
