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Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 12:46 pm
by Eugen
Santa came early
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 12:55 pm
by Eugen
Having trouble finding a #20 buna-n o-ring 7/8 ID 1/16 thickness for the inlet hydraulic pump fitting. Any suggestions?
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 1:05 pm
by Spike188
@FUTZ should be able to help.
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 4:05 pm
by DavidBarkey
Eugen wrote: ↑Fri Dec 09, 2022 12:55 pm
Having trouble finding a #20 buna-n o-ring 7/8 ID 1/16 thickness for the inlet hydraulic pump fitting. Any suggestions?
Round or square cross section ?
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 5:15 pm
by Eugen
DavidBarkey wrote: ↑Fri Dec 09, 2022 4:05 pm
Eugen wrote: ↑Fri Dec 09, 2022 12:55 pm
Having trouble finding a #20 buna-n o-ring 7/8 ID 1/16 thickness for the inlet hydraulic pump fitting. Any suggestions?
Round or square cross section ?
It would be round good sir. Like the wheels of the bus!

Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 5:24 pm
by Eugen
It's good with rivets. Nice to have the right tool.
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 6:19 pm
by DavidBarkey
https://www.amazon.ca/020-Buna-N-Ring-D ... B000FMYOXW
This comes with a few extra in Case you need a spare or two. Or you have freinds to share with .
Re: Case 644 loader repairs
Posted: Fri Dec 09, 2022 6:34 pm
by Eugen
I've seen those Dave, but I don't know if 70A durometer is too hard. Also, pack of 100!

Re: Case 644 loader repairs
Posted: Sun Dec 11, 2022 6:39 pm
by Eugen
Last night I decided to make a move on to loader arms. At some point I was wondering whether I should use just two shorter rods, on account of having reinforced the tower with 0.25" plate, but gave up on that idea and used full length rod across the entire width.
So I cut the rod and drilled it for spiral pins.
I was happy to see that the reinforcement plates and tube I welded were true enough as to allow the rod to go through easily. Applied good grease liberally on all inner surfaces.
Pay no attention to the looks of the paint. That's something planned for next summer, first I want to see it functional.
Took advice from you guys and warmed up the rattle cans and plate that I wanted to paint, using the diesel heater in the shed. Then went outside, sprayed the part and hung it inside. Dried up real fast so it was easy to put two coats.
Re: Case 644 loader repairs
Posted: Sun Dec 11, 2022 7:29 pm
by propane1
Looks good Eugen. Any way to drill, tap and put grease nipples in there on both sides ?
Noel