Topic: Message #216342

[cruzila]

Hey everybody.  I'm Tim.  Been trying to get in touch with Dave for a few days now about some questions with a MC20 - MC23 Toybox install.  Got a call from him today but wasn't at home to take it and couldn't get through the phones at MC again.  Made the mistake of mentioning this to my overzealous friend Smtyblt who started this thread to try to help me out.  Good old Smtyblt...

So here are my questions and issues for Dave or whoever might know:

I can't get the Toybox to slide onto the Output Shaft of the SM420 output to save my life.  The old LC 3spd TC input gear was tight but will slide all the way on by hand if you get it aligned right. I first checked for and removed any burrs by hand with emory cloth. No go.  I polished the ID of the Toybox (using a socket wrapped with 400 grit) and the OD of the SM420 output.   Now the LC 3spd gear goes right on, but still no go for the Toybox. I then marked the entire SM420 output shaft with a soapstone and tried to slide it on again to see if I could determine how far it goes on and where it hangs up. Well the splines never engage. It seems that the ID and OD are fine, but the "male" splines on the SM420 are too wide to engage the female splines of the Toybox.  Whats up with this?  Do I need to have the SM420 output shaft machined or is this a problem with the Toybox input?

Does the split ring go right against the SM420 mainshaft bearing, or should there be a thrust washer/spacer in there? One side of the split ring has a small groove machined in it - does this face the transmission or the Toybox?

I can run the SM420 Countershaft Rear Bearing Retainer and Lock Plate with the MC20 adapter right? (It hit the old adapter I use to have and was told to leave it off, which I was never comfortable with. My truck has still not moved under it's own power since I got it so no damage could have been done.)

I hope I was supposed to remove the three allen head bolts that were retaining the bearing on the back of the Toybox and knock in the machined aluminum spacer. Seemed to make sense to me and it was the only place I could find for it to go. Not sure I can get it back out without damaging it. It was a tight fit over the retaining clip. The allen head bolts seemed to be red locktited - for shipping I assume?

I pulled the Splitcase a month or so ago off a parts 60 and forgot a little bit about how it came apart. It was either missing or I have lost the PTO gear. I have some pics somewhere of the teardown, but can't find them on my computer. Do I need the PTO gear? In addition to the input gear, I still have a 2 3/16" spacer, a 9/16" spacer, and the three single and one double thrust washers that came with the Toybox that I assume all go on the output shaft of the Toybox in some specific order before the new nut.  I don't know what this order is.

Dave - sorry I missed your call today.  I'll try to reach you tomorrow or give me a call after 7 PM EST.

Thanks,

Tim Minner
Bowling Green VA
Bay to Blue Ridge Cruisers