Old Magnet
Senior Member
Is this the version used????
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Help with ‘74 D5 dozer.
- Thread starter Hambone33
- Start date
Old Magnet
Senior Member
Problems with holding speed setting is usually related to the roller/spring gizmos. Not responding to de-acceleration is going to be an issue with the de-acceleration unit itself. The speed holding portion is the same as the illustration I showed except the 63J uses a shorter shaft version.
Hambone33
Active Member
Been awhile since I posted on this but I came up with a repair. The spring inside the tube was locked up and due to corrosion and years of rubbing the inside wall of the tube the tube itself was worn through. I crossed my fingers and took a grinder with a cutoff wheel to it. When I removed the tube here’s what I had. 
Hambone33
Active Member
I had to carefully grind off the remnants of the tubing where it was welded so the “caps” were the correct diameter to fit in a new section of tube. Thankfully the spring, though rusty still seemed in serviceable condition. A local weld shop had some tubing with the right ID. We got things assembled and he welded the ends in. I’m going to put a grease zerk in so I can lubricate it. When I disassembled it the tube was full of a black power like residue which I guessed was dried up old grease. Not sure how they got it in there at the factory. Here’s the finished rebuild. 
Hambone33
Active Member
The little “L” shaped stop is just tacked on for now. The tube is a larger OD than the original so I’m going to see if I can get it in place before we weld it on fully. If it won’t go I might have to turn down the tubing a bit to get it in. Getting ready to see if it fits today.
HarleyHappy
Senior Member
The black stuff, was probably a mix of grease and powdered iron.
LCA078
Senior Member
Nice repair- hope it works like new.
Hambone33
Active Member
It was a little too thick with the heavier wall tubing. Bound up on the hood just a bit. A little grinding on the edge of the hood and it dropped right in.