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  1. L

    Case 580CK Rockford Power Shuttle

    Hi everyone, Unfortunately, I'm having issues with my shuttle again. I had the machine apart a couple of years back for some broken transmission gears and while I was in there found that someone else had assembled the shuttle incorrectly and done a pretty crappy weld repair on the shuttle...
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    1969 580CK - Broken Transmission Gears

    Thanks for the pics Juskatla! I ended up using the same bearing splitter I used to pull the axle bearings off with, worked perfectly to install the seals. I guess I do catch a break every now and then... The old girl is officially mobile again. No funny noises from the transmission and it...
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    1969 580CK - Broken Transmission Gears

    I'm with you there kshansen! I took the axles up to the machine shop last night so I could press the bearings on/off. They were seriously on there, no way I was getting them off without a press. Then I chucked up the axles in the lathe and polished the seal surfaces, there was a bit of a...
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    1969 580CK - Broken Transmission Gears

    kshansen, I was dealing with one of the no hole internal snap rings you speak of on this unit. I ended up heating the tip up enough to anneal it, once vice grips would bite into it I could use a pry bar on them to pop it out. Took forever and was very frustrating. I've run across a few design...
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    1969 580CK - Broken Transmission Gears

    I ended up ordering new thrust washers from my local bearing supply, they're a standard size and were $7.50 from Koyo instead of 2 x $188 for the kit from Case. The tractor is back together now and I tested it without the bull gears in with no issues or strange noises. The axle seals were...
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    1969 580CK - Broken Transmission Gears

    Alright, I think I've finally made some headway. The cause of a much of my concern was the two circlips and splined washers. These had been installed incorrectly and it was throwing off the assembled heights of the clutch hubs. Once I got that straightened out, the washer thicknesses as shown in...
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    1969 580CK - Broken Transmission Gears

    Hi Tinkerer, I do have a service manual, I'm just looking for reassurance that it is in fact correct. I keep finding instances on this machine where parts were assembled incorrectly or missing parts altogether, which is why I'm second guessing everything now. It was one of the 1/8th thrust...
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    1969 580CK - Broken Transmission Gears

    It's been slow going on the assembly, we've gone from a month of rain to 100F heat. I've got the transmission and diff back together and within tolerance. I have a powershuttle question before I put it back together. When I took it apart, I found that the 1/16th thrust washers were paired with...
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    1969 580CK - Broken Transmission Gears

    I had one hell of a time disassembling the rest of the transmission last night. Why the Case engineers thought it was a good idea to use internal snap rings without any circlip holes is beyond me. I also found the infamous fibre thrust washers in the diff. I have an order coming tomorrow from...
  10. L

    1969 580CK - Broken Transmission Gears

    Looks like you might be onto something Tinkerer. Based on the weld repair on the fork, someone has definitely been in there before. The shifter seems to work as it should, but someone may have lost the part and just replaced it instead of going hunting in the gearbox. I'm hoping to bring my...
  11. L

    1969 580CK - Broken Transmission Gears

    I took the powershuttle apart tonight to see if it needed a rebuild. I found a couple issues, but the clutch packs look fine to me. I found a cracked thrust washer, there appears to be a not so nice weld repair to the mainshaft and the 3 split rings that go into the torque tube are a bit chewed...
  12. L

    1969 580CK - Broken Transmission Gears

    I'll double check the ring gear, it did have threads on it though.
  13. L

    1969 580CK - Broken Transmission Gears

    I have found the culprit. Looks like a bolt had been floating around the gearbox and finally decided to jam itself between two gears. Not happy about having to rip everything apart for shoddy workmanship, but glad I found the root cause. I did find another small pin lying in the front...
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    1969 580CK - Broken Transmission Gears

    Just about have the tractor split. All of the bolts are out, I just have to pull the halves apart. A hell of a lot easier than splitting the engine from the torque converter! Finger's crossed I don't find any other carnage while I'm in there.
  15. L

    1969 580CK - Broken Transmission Gears

    I'm planning on starting into the job this week. I was able to track down an oil slinger, 1-2 gear, 3-4 gear and both shift forks for a pretty good price. I have no interest in splitting this tractor a 3rd time, so I figured I'd replace anything with signs of damage/wear. Has anyone done this...
  16. L

    1969 580CK - Broken Transmission Gears

    I'd say I'm about a 7/10 with my wrenching skills, I'll have a better look at it tomorrow when I'm out at the lot. I think my top priority is getting my hands on a 3-4 shift fork and a slinger gear as a start. Alternatively, if someone had a complete transaxle for the right price it might be the...
  17. L

    1969 580CK - Broken Transmission Gears

    I'll have to have a look in the service manual and see if I want to tangle with the ring/pinion. I know it can take some skill to get the engagement pattern set right. Maybe it wouldn't be so bad as I'm not changing the bearings or shims. I would really prefer to replace the slinger gear for...
  18. L

    1969 580CK - Broken Transmission Gears

    I must have been turned around, you're right, the slinger is between 3rd and 4th gears. I guess it's the 3-4 shift fork that was repaired then. It's the one with the mechanic's wire on it, hard to see the nasty weld repair in this picture:
  19. L

    1969 580CK - Broken Transmission Gears

    Since I heard the initial pop, there is definitely a rattling noise that hasn't gone away in the few minutes I've driven it. I'm assuming this is coming from gear teeth rubbing against each other. Maybe the shift fork bent when the slinger broke causing alignment issues? Here's the best pic I...
  20. L

    1969 580CK - Broken Transmission Gears

    Yep, it was the 1-2 shift fork that was welded. I've been searching through the parts diagrams and it would appear that the gear with the broken teeth is actually an oil slinger, not a drive gear. I'm wondering if I can get away with replacing the broken gear and the welded shift fork? It's a...
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