Otter LRC CM4647296 comes home

[Jordan Baker]

I’m also happy to report that the transmission is now all back together. The bearings arrived last week. It now has a pair of Japanese KOYO bearings in it, replacing a Swedish Timken bearing.

The front input shaft bearing was an oddball New Departure number that I was unable to find for a reasonable price. However after learning about all the different types of bearings and the letter designations, I was able to cross reference it a KOYO bearing. All was going well as it fit the shaft and the hole in the transmission case. The issue arose when I went to install the snap ring on the input shaft, it simply would not fit. I needed about 2mm more of grove space. It was then that I realized the original bearing’s inner race was actually about 2mm shorter than the other race. The bearing was handed over to a machinist friend of mine who got it back to me later that night. After that everything fit perfectly and the snap ring went one without issue.

I’ve included a few pictures of the new KOYO bearing on the shaft and the snap ring not fitting.