how exactly do you correct pinion angle?
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how exactly do you correct pinion angle?
i recently lifted my 97 f350, and i have a feeling my pinion angle may be off. as soon as i hit 75 mph, i can feel a vibration coming from the driveshaft. the mechanic that installed it said the angle barely changed, but could it have been enough? so how do i go about correcting the angle to get rid of the vibrations?
http://i15.photobucket.com/albums/a368/Dan_Hero/liftedtruck-1.jpg
http://i15.photobucket.com/albums/a368/Dan_Hero/liftedtruck-1.jpg
Posting Guru
Joined: Aug 2005
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From: Coal Country, ND
WOW!!! How much lift do you have! You ABSOLUTLY have to adjust the pinion angle. Sometimes lift springs come with degreed wedges on the bottom to compensate for lift, sometimes not, mine didn't. I had to go to a local truck shop and order some, and that was for a 4" lift, so yeah you definitly need to do something to get the angle corrected.
PS Nice lookin truck just get some bigger tires on that thing!
PS Nice lookin truck just get some bigger tires on that thing!
Last edited by unrulee; Feb 24, 2007 at 12:37 PM.
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its a 6" skyjacker kit, and i do believe there were shims on the bottoms of the leaf packs. is my only option more shims?
and the tires are coming this tuesday. im cramming 38" super swampers under it.
and the tires are coming this tuesday. im cramming 38" super swampers under it.
Lead Driver
Joined: May 2000
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From: Senoia, GA
the best way to correct pinion angle is to cut off the old spring pads and relocate them. i did this on the bronco. cut them off, cleaned the axle so it was good and smooth. placed the pads on the axle then without welding or anything i bolted the rear axle up like the pads were welded on. then with a jack under the pinion i tilted it up until i got it as humanly possible as i could. then with it sitting there i tacked them in 4 places each so there was no way they could move! a lil time consuming but very easy and surefire way to do it!
its a saturday job, from start to finish. well worth it though, i dont have to run any weak shims or worry about whether the shims are working themselves loose
-cutts-
its a saturday job, from start to finish. well worth it though, i dont have to run any weak shims or worry about whether the shims are working themselves loose
-cutts-
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From: Coal Country, ND
Well there is always that, if your handy with a grinder and a welder. Shims are the easiest, but as cutts explained cut and weld is stronger. I've run shims and haven't had a problem....yet. I got the type that bolt on with the spring center bolt, figuring that ther'd be less chance of them working loose. My 2 cents.
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please check your u-joints, centering kit, and see if the angles of the lift blocks are in the right way and one more disconnect the drive shaft from the rears and check the slipjoint and see how the wear is that might your vibration........
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