I maintain a M109 in running condition at the museum, and we have others in either monument or preserved state. The museum also has pretty much all the CFTOs for the M109 and the ARV. I'll provide photos of the prop shafts later today when I get to work.
The shafts are much larger than the M113A3/TLAV family. The M109 weighs more than twice what a M113 weighs, consequently, the drivetrain is much heavier.
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