Posted by jimg.allentown on April 03, 2020 at 17:50:35 from (24.115.193.250):
In Reply to: Re: HELP!!! posted by MarkB_MI on April 03, 2020 at 16:58:48:
Mark, that is complete overkill.
First thing - there is NO REASON to bother the pinion. The repair that George is trying to do does not require disturbing the pinion. All he has to do is remove the carrier unit from the housing.
Second thing. In case you did not know, the shims on a Dana rear are INBOARD of the bearings. That is, you need to remove the bearings from the carrier to access the shims. Again, there is no reason to disturb them. All he needs to do is unbolt the ring gear from the carrier unit. The most sensitive thing he needs to do is to make sure that when he replaces the ring gear, he gets it on evenly and torques the bolts evenly and to spec - which in this case is 75 ft.-lbs.
Third thing - As long as no major parts are replaced, all shims remain in place and do not need to be changed. Backlash will be in spec, and all will be fine.
The only parts being replaced as far as I can see are the side gears and the pinion gears in the carrier. Not to be confused with the ring and pinion set. These gears have No effect on the setup.
Also, bear in mind that we are looking at a machine that will probably never go faster than 15 mph. Even if the preload and backlash were not exactly to spec, does it matter? All the difference it could make would be gear whine AT HIGHWAY SPEEDS.
The most difficult thing to do will be putting the carrier back in the housing. The bearing races will want to tip to the outside, and will continually have to be tapped back straight during assembly.
Those rears are almost generic in that they were used by several manufacturers. I tangled with a few in my time at dealerships. They are a real challenge to set up, but they are also very robust.
There is no need for him to go to a specialist for this repair. If he were setting up a replacement ring and pinion, that would be a different story. What he needs to do is well within the realm of a do-it-yourselfer with a bit of guidance.
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