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Air Ride Suspensions \  Pinion angle question

Pinion angle question

Air Ride Suspensions Q & A
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replies 25
following 15
 
Wicked Fantacies   +1y
the angle finder has a magnet on the side put it against the yoke on a flat part the same with the trans. and if the trans is 2 degrees positive then the pinion should be 2 degrees negative what ever one is the other end should be the same only opposite
sjudd86   +1y
got it, that helped out alot, thanks man.
Hemi00x   +1y
sounds easy enouugh..
Hemi00x   +1y
damn steve thanks for the post man cause now im saving a little money becuase i wouldnt have thought about it and just took it to have it done... now that i know a little more about it i think i should be able to do it
Hemi00x   +1y
Alright so i go to home depot today and pick up a angle finder and i measure my diff. at like positive 17 degrees and my tranny is at about negative 15 degrees should i sweat it and adjust it asap or is it not bad??? Im a newbie with measuring pinion angle so any .2 cents would help...
olskoolpup   +1y
jesus christ, you must not have the truck anywhere near level
Hemi00x   +1y
fill me in..... i might know what i did wrong..... i was sittin on a hill with the tires turned man you just made me look like a jackass thats common since to have it on a flat surface.... but i was in a hurry.. imma go re-measure now that its in the garage
olskoolpup   +1y
it doesnt have to be perfect, but on jack stands within a couple degrees. then set it equal and opposite to the tranny at ride height, that is if you have a 1 piece drive shaft.
Hemi00x   +1y
thanks man im not gonna lie i dug into this without knowing anything but i mean i know the basics of everything so i figured i could do it.... but i dont want to go riding around with the pinion shot... but im just wondering if it being out by 2 degrees how bad is that?? at ride height its 2 degrees off but my flip kit has fully adjustable pinion built in so i mean im just too lazy at the moment to take the time to loosen the u-bolts and twist the axle a bit..
olskoolpup   +1y
Andy (periportfd) has helped me alot with pinion angle stuff.

for instance, if the rear of your tranny is pointing down 2 deg, then youll want the front of the rear end pointing up 2 deg. this will allow the bearings in the ujoint to lubricate properly, and not bind.

if your angles are off a little, it may just shorten the life of your ujoints a little bit, barring they are binding. if they bind or if the drive shaft is in a straight line with the front of the rear end, the bearings will not rotate inside of the ujoint and fail rather prematurely.

suspension geometry is pretty important, but easily learned.