Question about 1994 Nissan King Cab

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Truck jumping in first and second gear once clutch is let out fully when accelarating

I had a machine shop press on a center support bearing after my sons put it back on the truck jumps when you have it in first gear and in second gear also once you put into third gear it stops I know that is not my clutch doing this. does anyone have any idea what might be going on. has split drive shaft or two piece drive shaft.

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  • Nissan Master
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I am guessing here but I am sure that the yokes on the shafts are not in phase . That is to say that the cross pieces are out of wack. check the position of the gearbox yoke and place it directly vertical . Check the position of the joint at the other end of the shaft and the cross must be exactly the same . If it is off say 45 degrees then it has not been assembled properly. Now to explain it better . the ears of the gearbox yoke ( bit that has the 'U joint bearings in it) should be on top and underneath ---Vertical plane ---. That will place the ears of the shaft in the horizontal position now go to the rear end of that shaft and the ears of the shaft must be in the same plane . IF those eras are vertical ( the same as the gearbox yoke ) then it has to be pulled apart and rotated 90 degrees to be the same as the front of the shaft. Now the second shaft ( slip joint end and the diff end get the same treatment. So the slip joint yoke has to be in the same plane as the diff yoke. It all has to do with the shaft speeding up and slowing down as it rotates through the 90 degrees and the different "u" joint s speed up and slow down at different times so that one end cancels out the other and you have a vibration frees shaft. If you are still unsure go on the web and find a site the refers to drive shaft manufacture and problems and phasing

Posted on Mar 31, 2014

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The overdrive clutch is splined between the case and the coast clutch cylinder. The overdrive clutch holds the coast clutch cylinder and, in turn, the overdrive sun gear, to permit the planet assembly to overdrive the ring gear.
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