halftrackinfo
tracks/ tires and associated rear suspension => all track related hardware and maintenance => Topic started by: brit plumber on May 25, 2021, 01:41:42 PM
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I’ve noticed I’ve got 2 versions of the Bogie bolt pt. no. C-86015. Is it a case of different manufacturers or perhaps a early v late difference?
The one on the top is shown in Ord 9 TM9-710 page 254. It has little slots cut out of the top edge. The 2 on the bottom don’t have the slots because the bar is actually lower in relation to the threaded ends.
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I have two tracks and am taking parts from one to finish the other. I noticed the same thing. One of my manuals states, To provide for the additional weight of guns and other heavy equipment, a heavier volute spring No 3 is now being used. The new No 3 spring compresses to 9 1/4 inches under a load of 5000 pounds compared to 8 inches for the No 1 spring. Installation of the new spring requires machining of the bogie arm tie bolt surface to provide more operating clearance between it and the crab assembly. I think this is what you are referring to in the picture, don't know if there were any updates.