June 2011 Online Question

online question:
I am looking for parts for a fluid coupling from a 1956 Yale forklift. I am needing a seal and a 46 tooth ring gear. The seal is held in by a large spring on the hub side and I believe it is possibly a ceramic seal of some sort. I would like to locate parts before I disassemble this unit.

answer:
Two options are acceptable replacement parts. Sonnax part number CI-RG-146XF a ring gear specific to ’51-’58 fluid drive industrial converters. Tri-Component also part number D-100K that would interchange correctly.

online question:
We have been using the Sonnax bearing GM-N-11 for years now in 5L40E converters without a problem.
On the 4T65E Volvo we use the same bearing, but after a few months these bearings start failing and creating a noise. We only see this in the 4T65E (Volvo is mainly what we do. As for GM applications, we do not see a lot).
Anyone seen this problem? Do we need a different bearing, or we do you think we are doing something wrong with these converters ?

answer:
One area to check if you are experiencing this problem is to check that you are not getting an arc from the welder. The surface that the bearing rides on must be flat. Sometimes if the heat is too high, it may distort the surface, which can be corrected by shaving it off to make it level.
In addition, you can machine the stator face to adapt to a GM N8HLT to fit in its place, which some have found to be a more rugged bearing.

-Found in June 2011 Newsletter