NGarner
New member
This is more of an informative thread than anything. When I was looking into buying this dozer, I couldn't find ANY information on them. From what I have noticed, the Furukawa dozers are extremely rare in the US, especially the older CB5/CT5. I thought I would make a thread going through what I am doing to potentially help someone in the future.
If anyone has any helpful comments, feel free to chime in! This is my first dozer I have ever worked on (I am pretty familiar with mechanics, though. No better way to learn that to do!)
When I bought this dozer, the left track was very weak. If I tried to turn in that direction, or apply braking to pretty much either side, you could hear gears in the final drive jumping. I was told it just needed a bearing, but I was a bit leary of that. I was prepared to have to make new gears (I work at a machine shop). When I got it, I started taking everything off to try to get to the final drive assembly. I couldn't find the master pin on the tracks so I couldn't actually take the tracks off. I didn't even have anything big or strong enough to remove the pin even if I did find it. So I attempted to release the pressure on the track adjusters. I knew the track adjusters need to be rebuilt at minimum, but as I found out, they need to pretty much be completely replaced. So, that will be another thing I will have to make for it, seeing as parts are non-existent for these.
After removing several bolts that were rusted beyond belief, I finally got the tracks loose enough that I could remove the sprocket. To my surprise, they final drive had 2 reductions instead of the normal 1 (I think that is worded correctly...). From what I saw on other dozers, they just had one smaller gear that drove the bull gear. This on had 2 sets of reductions. Anyway, when I pulled the two covers off that were on the side of the final drive housing, I could see what the problem was. One of the bearings was gone! All of the rollers where in the bottom of the housing. I originally thought about trying to remove the bearing where it was instead of taking the whole thing apart, but after some thought, I wanted to play it safe and check out the rest. I'm glad I did because when I pulled everything apart, two more bearing assemblies fell apart. I brought the housing to work and am going to press out the races that are in it and the races that are on the gears. It was pretty late when I got the housing pulled off so I don't have any pictures of that yet. I'll be sure to upload some when I get the chance. I do know one of the bearings is 22208E (the one that was originally bad). I'll get the numbers for the others when I get them pressed out. A local bearing store has one for just under $100.
The track adjuster was seized. I had to unbolt it from the track frame and pull the whole thing back. Two of the bolts required to get it taken apart to get it out of there completely were rusted to the point a wrench would not fit on the end. I am going to have to cut the bolt heads off and figure out if I'm going to build a complete new adjuster assembly or try to repair this one. They are both shot.
If you look closely, you can see the gap where a bearing is supposed to be. :laughing:
If anyone has any helpful comments, feel free to chime in! This is my first dozer I have ever worked on (I am pretty familiar with mechanics, though. No better way to learn that to do!)
When I bought this dozer, the left track was very weak. If I tried to turn in that direction, or apply braking to pretty much either side, you could hear gears in the final drive jumping. I was told it just needed a bearing, but I was a bit leary of that. I was prepared to have to make new gears (I work at a machine shop). When I got it, I started taking everything off to try to get to the final drive assembly. I couldn't find the master pin on the tracks so I couldn't actually take the tracks off. I didn't even have anything big or strong enough to remove the pin even if I did find it. So I attempted to release the pressure on the track adjusters. I knew the track adjusters need to be rebuilt at minimum, but as I found out, they need to pretty much be completely replaced. So, that will be another thing I will have to make for it, seeing as parts are non-existent for these.
After removing several bolts that were rusted beyond belief, I finally got the tracks loose enough that I could remove the sprocket. To my surprise, they final drive had 2 reductions instead of the normal 1 (I think that is worded correctly...). From what I saw on other dozers, they just had one smaller gear that drove the bull gear. This on had 2 sets of reductions. Anyway, when I pulled the two covers off that were on the side of the final drive housing, I could see what the problem was. One of the bearings was gone! All of the rollers where in the bottom of the housing. I originally thought about trying to remove the bearing where it was instead of taking the whole thing apart, but after some thought, I wanted to play it safe and check out the rest. I'm glad I did because when I pulled everything apart, two more bearing assemblies fell apart. I brought the housing to work and am going to press out the races that are in it and the races that are on the gears. It was pretty late when I got the housing pulled off so I don't have any pictures of that yet. I'll be sure to upload some when I get the chance. I do know one of the bearings is 22208E (the one that was originally bad). I'll get the numbers for the others when I get them pressed out. A local bearing store has one for just under $100.
The track adjuster was seized. I had to unbolt it from the track frame and pull the whole thing back. Two of the bolts required to get it taken apart to get it out of there completely were rusted to the point a wrench would not fit on the end. I am going to have to cut the bolt heads off and figure out if I'm going to build a complete new adjuster assembly or try to repair this one. They are both shot.
If you look closely, you can see the gap where a bearing is supposed to be. :laughing:
