RC60-72 Mower Gear Box

[tim0477]

Hi,

Question regarding the right angle gear box. I was doing oil seals on the gearbox and while I had it apart, I pulled the splined input shaft out to see why there was very slight side to side play in it. The parts diagram shows two shims behind the gear, but I could only find one. I turned it every which way and looked with a flashlight and even tried a magnet, but could only find one shim. Are there supposed to be two shims in there or is the parts diagram just showing two different thickness shims where either one or the other would be used as needed?

Thanks,
Tim

P.S. Are the bearings on the input shaft supposed to be a loose fit in the bore of the gear box. Hardly takes any effort at all to slide the shaft with both bearings on it in and out.

 

[E/S]

I am not familiar with this particular box, but usually you need to know the end play specs in order to know how to shim it.

E/S

 

[ETRon]

The drawings won't show you the "actual" number of shims required, it's just an example only. Like said already the end-play spec is what is important and unless the bearings are showing signs of eminent demise there's no real reason to think the play has changed enough to matter. The end-play if you were not aware, to allow for the effects heating from running has on the unit and a lesser amount for lubrication clearance.

Ron

 

[tim0477]

I was just wondering because it shows two in the drawing and they had different part numbers. One annoying thing about the Kubota drawings are that you get the picture and a part number, but no description of the part (at least in the book I have). I put it back together using the only shim I could find in there. Just finished patching the rust holes in the deck, my modified gauge wheels are almost done, then it will just need a paint job before it goes back to work.

Thanks,
Tim