The proper preload (resistance to turn) of the pinion is about 12 lb-in. The tricky part, of course, is just how tight to get the nut on the flange: too tight and the diff won't turn and/or the bearings will fail too loose and the gears will chew up. Then tap off the flange, pry the seal loose, fit a new seal, polish the surface of the flange on which the seal rides, and reassemble. An air impact wrench is perfect for this job I believe the nut is 1 5/16" dia. In the first case, it's necessary to remove the driveshaft, then remove the nut that holds the pinion / driveshaft flange. The second is common to the SalisburyÄiffs and the repair is detailed in my tech book which is on the way to you. These can be corrected at the same time, but the first is far more serious - you could run the diff out of oil - a fatal error. You have two problems: a leaky pinion oil seal and too much slop in the "spider gears" in the differential carrier housing. How can I get a copy of the book? If there is a charge for the information I will call with a credit card #. Have a tech article on this or any thing in your book. does not want to do the job, they told me to find a good use rear end, because with out the crush sleeve its a very nastie job and hard to make it work right!? Do you I need information on resealing my pinion gear.I also have more than 1/4" of free play. I have just found you and your web site, It is great! If tightening the pinion nut does not change the whine, then suffer it until you find another diff! Instructions for replacing the washers behind the diff and pinion wheels is in my techbook and on the webpage (I believe). Tighten up the nut by 1/12 or 1/6 of a turn and judge the resistance to turn. Let this long bar carry through and come to rest on the bottom of the battery box. Place a socket on the pinion nut and some type of long bar, bolted to the diff flange. It is nearly impossible to judge the resistance to turn because as soon as you begin to rotate the pinion, the crown wheel begins to turn, too. The pinion can become loose - it should have some resistance to turn - a preload of about 12 lb-ft. Two of these involve you: Tightening the pinion bearing, and replacing the washers behind the spider gears. There are only several easy repairs you can make to a differential - after that, it's best to replace the entire diff unit. I know this information arrives later than you had hoped. How hard is it to replace the pinion bearings? Is there a good source of instructions for this? I can feel pinion bearing slop in the rear flange. If I let off the throttle I get no noise until it starts to decel. I get a whine when I accelerate that increase in pitch from 35 to 40 MPH I get a different whine when I decelerate. I am experiencing what I think is pinion bearing noise in my 77B. You can also use the search bar below to find answers to technical questions! Category There you can also find answers to questions regarding problems with male potency. Watch our most recent Youtube video below, and be sure to visit our Youtube page for more tutorials.
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