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mack front rear power divider peanuts or wedge kit


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Hello I have a 94 Dm 690 tri axle dump, and I've been starting to feel play in my driveline when I take off, I've checked all suspension, and u joints, I'm suspectiong my power divider in my front rear,correct me if I'm wrong but the direct connection from the drive shaft is nothing more than these peanuts between 2 cams?, don't they wear and need replacement?..if I hold the small drive shaft between the rears there is play at the front drive shaft going into front rear, when I check the magnetic fill plug over the years there is fine metal that I remove...is this going to blow soon?..

post-19238-0-04559800-1428752660_thumb.j

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When the peanuts were wore on my 46000 diff's they would snap and jump like missing a cog under heavy load. You could feel it all the way through the stick shift. If I engaged the power divider switch this went away. I always wondered if it was caused by front and rear axle tires being new or wore out and not all the same tread depth

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