H3 final drive

I have a '61 H3 I'm trying to get running and it has a slight wobble on the right sprocket I need to fix after I get the engine running. I'd like to learn to take this apart so is this the same as on a D15, since the H3 is based on the D15 platform? Thanks for any help and suggestions.

There's a Youtube video that shows a guy taking the brake and steering clutch out of an HD6, are these similar enough to be able to use that video as a guide?

PaDon - it might be beneficial to purchase a service manual to review the criteria and tools necessary to remove the final  drive.  You will need to roll the sprocket clockwise in order to get to the bolts on the steering clutch.  

PaDon nothing like a REAL service manual from the manufactor of the machine. Chilton manuals are generally worthless and Haynes are worse. Looking for specs on pickup in a Haynes it had the line that say WORTHLESS if you had not already figured that out "if you need this information you should take it to a professional". Lucky for me I had not had to buy the manual it came with the truck from my in-laws.

Sprocket has nothing to do with the clutches or anything in that area . More than likely it's inboard or outboard bearing on the axle shaft - which carry the load of the tractor . 
 Check case area as you will probably find the wobble is from that area , and if severs the case is probably worn internally where the bearing cup resides in casting . 
 Might slacken track and see if you can move sprocket fwd or back with a bar , if movement , look at removing case and having it machined for new bearing race . 
 Had to do that for both sides of HD4 and also on my FD5 - no outboard support on sprocket like on older machines like HD5 or HD6 or other construction machines , industrial machines were made lighter and the smaller bearings in case were not up to stress placed on the drive systems 

I had a machine shop at a transmission rebuilder do my cases , cost around $500 to have case machined and a insert welded into case and new bearings . 
 If the case is worn to that point it's the cheapest way I found as finding a replacement case is expensive also .