I use 2 5/8 bolts with the heads cut off and 2 flats ground on the end to help remove if needed for help with alingment of center section to rear. The transmission input shaft and its housing bolts to center housing with or without T/A and the outside of that housing fits in the big hole in transmission to take care of final alingment. The transmission main shaft front roller bearing slides inside transmission input shaft, on reassembly some recommend putting a rubber band around rollers to hold them closer. I usualy remove belt pulley gear box or cover and reach roller bearing and lift front of main shaft to line up because transmission main shaft drops a little without input installed. Most 450 have just the splined coupler for the pto shaft,if so the splines need lined up also when installing center to rear. If it has the seasonal disconnect just set in disconnect position when installing housing. Before removing center housing from transmission take out 9- 5/8 diameter bolts( not head size), one is inside the T shaped cover plate on bottom of center housing. If you don't know how parts are removed from center housing you should get a manual or someones web site that shows how.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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