Case 644 loader repairs
- thebuildist
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Re: Case 644 loader repairs
The inner pipe's job is to spread the load over a greater surface area. Without the pipe, the edge of the thin sheetmetal would quickly wear egg-shaped, as has happened here after the weld failed.
With the pipe welded solidly to the sheet metal, the pressure of the shaft then pushes against the extended length of the pipe ID.
The pipe is acting as a large bushing.
Bob
With the pipe welded solidly to the sheet metal, the pressure of the shaft then pushes against the extended length of the pipe ID.
The pipe is acting as a large bushing.
Bob
"Never be afraid to try something new. How hard can it be?"
- Harry
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Re: Case 644 loader repairs
On mine the pipe is a short piece in each side of the towers.
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Harry
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Harry
1973 444, 1974 644, 1976 446, 1977 646, 1986 226
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Re: Case 644 loader repairs
Thanks @thebuildist. My 648 just has the 3/4” pin running across the tractor. It sits in bushings at the towers. Makes me think this one hasn’t seen the loader work that @Eugen tractor has done.
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Re: Case 644 loader repairs
Very interesting guys! The other 644 of mine doesn't have the tube all across, rather just bushing on each side of the tower. The tower is made of bent steel about 3/16" thick. Whoever used this loader, really abused it, in my opinion. I'm thinking t's hard to do this kind of damage from just soiIl or gravel loading work.
In any case, looking down where the arm/boom cylinder is connected to the base of the tower, I noticed something that will be useful. The pin holding the cylinder goes through a bushing welded to the tower base, but then there is a 1/4" plate with bushing welded on the inside of the tower, at about 2" distance from the exterior wall of the tower base, parallel to it. That plate also has a bushing. There is no reason why I could not weld a plate on the upper side too, there is room. That will reinforce the upper boom connection tremendously, and no more tubing all across. I'll post pictures when I get my phone back from the kids
In any case, looking down where the arm/boom cylinder is connected to the base of the tower, I noticed something that will be useful. The pin holding the cylinder goes through a bushing welded to the tower base, but then there is a 1/4" plate with bushing welded on the inside of the tower, at about 2" distance from the exterior wall of the tower base, parallel to it. That plate also has a bushing. There is no reason why I could not weld a plate on the upper side too, there is room. That will reinforce the upper boom connection tremendously, and no more tubing all across. I'll post pictures when I get my phone back from the kids
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- Spike188
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Re: Case 644 loader repairs
The rod can be brutal to remove from the tower as it aften seizes in.
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Re: Case 644 loader repairs
Oh the matter is clearly settled. The tube I had across must've been a patch solution by the PO. My other 644, like the tractors of @JSinMO and @Harry and @Spike188 has bushing on the tower interior. Thank you guys, this is so helpful!
- Spike188
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Re: Case 644 loader repairs
In the pictures I posted there are only bushings in the tower and are not a continuous pipe. The pin used to attach the loader arms is only supported on the two tower bushings and passes open air though the tower. The pin extends as one piece, loader arm through loader arm.
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
- DavidBarkey
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Re: Case 644 loader repairs
After seeing what the others tractors have with a sleeve welded in from factory . I would now say make a template to enlargen the hole and make round again both sides . Then make up 2 new oversized bushings and weld them in place restoring it back to the way the others are and that most likely was .
Dave
Mad Tractor Builder
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- Harry
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Re: Case 644 loader repairs
I also remember drilling holes and inserting zerk fittings into the loader arms and the bushings in the tower bushings. You just have to insert them into an area that you can access with a grease gun later. It's a big job repairing with a lot of attention to details. I have noticed my 644 lbh has a bent shaft also and I'm not in a hurry to replace it.
Keep the Peace
Harry
Keep the Peace
Harry
1973 444, 1974 644, 1976 446, 1977 646, 1986 226