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Engine Specific Info and Questions => IDI Engine => Topic started by: captainpartytime on August 04, 2008, 02:30:49 pm

Title: Excessive Intermediate Shaft Play
Post by: captainpartytime on August 04, 2008, 02:30:49 pm

I just picked up a nice dial caliper from Myke W and decided to measure the axial clearance on my IM shaft. It came up 0.12 mm off. The wear limit is 0.25mm and I measure 0.37mm of axial play. IThe procedure I used was to place the dial caliper on the block with a magnetic holder. I pushed the IM shaft all the way toward the flywheel side of the block, set the dial to zero, and pulled out the shaft as far as I could. I can't figure out what could be causing the excess play. I had new bearings pressed in and the shaft itself looked really good without any excessive wear. Any thoughts?
(http://images.thesamba.com/vw/gallery/pix/465979.jpg)

Title: Excessive Intermediate Shaft Play
Post by: riddleyo on August 05, 2008, 07:14:10 am

Have you checked the thrust surface of the intermediate flange for wear? (the piece that has the o-rings and holds the intermediate shaft in place)

Title: Excessive Intermediate Shaft Play
Post by: captainpartytime on August 05, 2008, 07:46:43 am

I think I may have figured out the problem with the little help from Myke W. The vacuum pump was not in place and bolted down when I measured the axial clearance. Hopefully, with the pump bolted in the IM shaft will have less play. I will report my findings shortly.