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khouse6
02-01-2017 13:43:57
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left wheel brake was not holding on older cub: about 1950 model. tore tractor down. bolt in brake wheel was broken. replaced it and it held fine for a few weeks. failed again. tore back down, bolt was loose. cleaned it up, put some lock tite on bolt. held for a few weeks and failed again. any suggestions?
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Jim Becker
02-01-2017 20:20:25
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Re: cub brake in reply to khouse6, 02-01-2017 13:43:57
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I know it is a diagram from CaseIH. What I don't know is how that diagram ended up saying it is a 3/8 capscrew.
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john *.?-!.* cub owner
02-01-2017 19:17:39
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Re: cub brake in reply to khouse6, 02-01-2017 13:43:57
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Slide the drum off and see if the hole in it is "wallered" out. If so, it will keep coming loose till you get a new drum. Like wise with the shaft being worn.
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khouse6
02-01-2017 20:09:18
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Re: cub brake in reply to john *.?-!.* cub owner, 02-01-2017 19:17:39
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Roster
02-01-2017 19:01:06
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Re: cub brake in reply to khouse6, 02-01-2017 13:43:57
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Open your email,,might have some parts to help you.
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Jim Becker
02-01-2017 18:37:57
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Re: cub brake in reply to khouse6, 02-01-2017 13:43:57
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The hole in the drum is threaded, mandating use of whatever thread the hole has. The original printed parts catalogs just called it a lock screw. I don't know where the online list (that JAN linked to) got the capscrew and 3/8 from. Some of the IH parts didn't translate well when they went online.
TM Tractor has the right thing.
www<dot>tmtractor<dot>com/new/br/4721fp.htm
It should be a cup pointed setscrew with a locknut. The setscrew goes in directly on top of the woodruff key. I suggest a new setscrew and a new key. Then tighten the ^%$& out of it. If the shaft or center hole of the drum are worn, you will probably have the problem again.
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Janicholson
02-01-2017 19:04:30
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Re: cub brake in reply to Jim Becker, 02-01-2017 18:37:57
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It is from Caseih.com Parts diagrams. Setscrews are tough material. Loose fit on the drum will cause failure every time. Jim
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Janicholson
02-01-2017 15:24:59
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Re: cub brake in reply to khouse6, 02-01-2017 13:43:57
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I see only a woodruff Key holding the brake drum the the differential shaft. What bolt are you discussing.
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khouse6
02-01-2017 15:32:11
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Re: cub brake in reply to Janicholson, 02-01-2017 15:24:59
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the woodruff key keeps the drum from turning on the shaft. there is a bolt and locking nut that holds the drum in position, on the shaft. thinking about a small spot weld. sigh
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Janicholson
02-01-2017 16:23:54
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Re: cub brake in reply to khouse6, 02-01-2017 15:32:11
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I see a 5/16" 18 bolt/nut in the parts list. Using a grade 8 bolt or socket head cap screw with fine thread and locktite would be a good option. If the drum is loose on the shaft, it will be a problem and fail again. if the woodruff key is loose in its pocket and way, again it will fail. Jim
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