Hello Folks- my 86 (10/85 manufacture, technically an ?85.5?) 720 driveshaft may or may not be out of phase-- the question is are all three yokes supposed to be parallel/ inline ? my front yoke is 90 degrees off from the two rear yokes which are inline with each other.. The Full Story below..
Was getting heavy vibrations between 60-70 mph
So I've done a number of things- replaced everything, may have put it together wrong at one point. Took it off the truck and had the carrier bearing and front u-joint pressed in, then took the rear in the next day. Put it back on and had less vibration, but still some. Took it in and a shop pulled shaft and balanced it for me, and now vibrates even less but it is still noticeable. Worse, now i look under truck and front yoke is 90 degrees to rear yokes so im wondering if i had it balanced while out of phase, and what will happen if i try to rotate it..
For now I'm hoping someone with close to the same truck can tell me how their yokes are aligned and i can go from there, thanks in advance.
and Ok folks after years of finding every answer on this forum i have one i cant find first time posting but owe you all a great many thanks for getting me through quite a few repairs...