Lots of RD4 Questions

Well I'll give you a couple answers, 4G1993 is 1936. I use 30w in the pinion clutch compartment.
Timing marks on the mag are accessed thru a pipe plug on the backside of the magneto mounting flange.

Do a search for each of these topics on the acme board. Most has been covered in detail.

Matt

Thanks for the info. Matt. I searched ACME for a couple of hours and didn't really find what I needed. I probably need to try different key words. I pulled the pipe plug behind the mag and didn't find any marks when the timing mark was lined up in the window on the mag. I'll play with it some more this evening and see how many more questions I can come up with.

I tried looking up some of the topics since I went through most of the same questions a year ago. Can't find them now. Do have the book so I'll brush up and get back to you.

Main clutch throwout is lubricated by a drip cup located between the steering levers.
Matt

Thanks ccjersey and SpragueM.
I would have thought that there would be a removable cover to adjust the pinion, too, but there's not. There's a hump cast in to the flywheel housing for the pinion, but its not removable. The top of the clutch housing, the transmission and steering clutch covers are all one big piece.
This Cat has a funnel over the release collar (inside of the housing) and an oil line that runs into the funnel from the transmission. I'm wondering if oil is supposed to be pumped through the line by the transmission, or if the transmission gears are supposed to splash oil into the line. If you guys can find more information for me, I'd sure appreciate it.

Transmission level is checked by a plug. Plug is located on right side of tractor, just forward of the rear sprocket on the access cover. Kinda tight as you are between the track, sprocket and carrier frame. A bit of a reach to get in there, but it's possible.

You should have a large drip cup in front of the gear shift quadrant, between steering levers. that cup is attached to the oil line under the clutch access cover. Also 2 smaller cups just in front of operator seat. one to lubricate each steering brake.

Pinion is adjusted thru that pipe plug hole as CC stated. No cotter pin though, a small pin is pulled back, pinion rotated and pin pushed back in to hold adjustment.

Thanks SpragueM. I've been sick the last few days, but I'll get back to working on the little Cat this weekend.

The main clutch bearing lube arrangement sounds like a one of a kind. Would you mind putting up pictures if you get the cover off working on the pinion latches?

Sounds as if it might work ok. It wouldn't take a lot of oil out of the transmission if there was a slinger on something that kept a little oil coming through that tube into the funnel. I would make sure that a little bit of transmission lube kept accumulating in the bottom of the clutch housing though! Don't know how you would check it otherwise.

I reread the procedure for adjusting the pinion clutch on the old ones and you only have to pry out the pin working through the fill plug hole. While you have it held out, you rotate the pony flywheel to turn the pinion and make the adjustment. I couldn't see any way to get a second tool in that one hole to turn the pinion, but you don't have to do it that way.