Driveline Angles
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Trailering
Joined: Feb 2022
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Driveline Angles
Looking for some advice on best way to resolve u-joint working angles.
Was having some vibration at higher speed so I pulled my driveshaft and took to a local shop. They said it was pretty much roached so they swapped yokes, u joints, phased all that good stuff.
While it was out I checked angles and pinion angle was way off.
transmssion yoke is 7 degrees down. Driveshaft was 1.5 degrees down and pinion was 7 degrees down (I shimmed it to match the trans.) I did reinstall driveshaft after I got it back and vibration seemed to be gone. However I’m concerned about the u joint working angle.
From my calculation, Which could be wrong, I’m figuring my u joint working angle is 5.5 degrees which seems excessive compared to 3 degrees I’ve seen listed as maximum.
with all that, what is the best way to correct this to get back to three degrees or less Assume I need to shim under the trans cross member. Also assume I’d need to loosen engine mount bolts to do this? once I can work out the trans angle shimming rear end to match shouldn’t be a big deal.
Was having some vibration at higher speed so I pulled my driveshaft and took to a local shop. They said it was pretty much roached so they swapped yokes, u joints, phased all that good stuff.
While it was out I checked angles and pinion angle was way off.
transmssion yoke is 7 degrees down. Driveshaft was 1.5 degrees down and pinion was 7 degrees down (I shimmed it to match the trans.) I did reinstall driveshaft after I got it back and vibration seemed to be gone. However I’m concerned about the u joint working angle.
From my calculation, Which could be wrong, I’m figuring my u joint working angle is 5.5 degrees which seems excessive compared to 3 degrees I’ve seen listed as maximum.
with all that, what is the best way to correct this to get back to three degrees or less Assume I need to shim under the trans cross member. Also assume I’d need to loosen engine mount bolts to do this? once I can work out the trans angle shimming rear end to match shouldn’t be a big deal.
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