Help with Bobcat m600

[gearheadnick]

I bought an early 70's m600 a few months ago. It runs well, and all the hydraulics work. One problem it had was the swivel connection for the variable drive sheave was broken off. I recently decided to fix it. I finally managed to get the bearings out and replaced them along with the swivel and the carbon seal. The problem I'm having is it leaks when I move the ground speed lever. It's leaking somewhere inside the pulley on the engine. I'm at a loss as to how to get it off the engine. I'd like to take it completely apart and replace whatever inside is worn out. The manual doesn't show how to remove it, it just says to take it off. Even the guys at my local Bobcat dealer weren't much help. Any ideas?

 

[OldMachinist]

See if this post helps
http://www.skidsteerforum.com/DesktopDefault.aspx?tabid=54&frmView=ShowPost&PostID=47788

 

[gearheadnick]

See if this post helps
http://www.skidsteerforum.com/DesktopDefault.aspx?tabid=54&frmView=ShowPost&PostID=47788

Thank you for that link. I was wondering how to get that other snap ring out. I'm going to take it apart tomorrow. If I get ambitious, I'll make a video of it and put it on youtube. If I do, I'll post the link here.

 

[gearheadnick]

Thank you for that link. I was wondering how to get that other snap ring out. I'm going to take it apart tomorrow. If I get ambitious, I'll make a video of it and put it on youtube. If I do, I'll post the link here.

Just in case anyone was waiting for the video (which I kinda doubt), it's gonna be a few more days at least until I tear into the variable speed sheave. When I originally posted, I had taken a side cover off to get to the clutches. Long story short, I had to order new ones, and they came in today. I have the back tires off, so I'm going to replace all the clutch plates before I tackle the sheave (when all the tires are back on). It finally occurred to me (I had a "doh"moment) that the reason it was moving before I tried fixing the sheave and why it stopped moving after I tried moving the ground speed lever is the fact that everything got soaked in hydraulic fluid, including the belt and pulleys. That was causing the belt to slip and when I tried putting a load on the belt by moving the machine, the front pulley wasn't being spun enough to get the machine to move. For now, I'm just going to take the sheave half apart to get the belt off and get everything clean and dry. I have the hose that goes into the sheave blocked off with a pipe plug. I'll overhaul the sheave in the summer, when I can keep the mess outside, instead of in our machine shop, with an unsightly amount of speedy dry on the floor.