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Case Tractors Discussion Forum

Case 580 CK Brake lock-up

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Ralph D'Ambrosi

10-21-2004 17:17:00

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I have a 1968 580ck. From time to time the left brake gets into a state where I just touch the brakes and it locks up. This happens in forward and reverse. The only way to free it up is to rock the tractor in the opposite direction. When I release the brake peddle the peddle comes up and the linkage returns, but it doesn't free up unless it is rocked.
I have taken apart the brake and there is plenty of pad on the shoes and disks.
Sometimes if I am moving at a good speed (3rd or 4th gear)on pavement and hit the brakes it will chatter and then operate normal for an hour or so.
Any ideas on how to fix this would be appreciated.
Thanks in advance.
Ralph D

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just 580's

10-21-2004 18:59:48

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Re: Case 580 CK Brake lock-up in reply to Ralph D'Ambrosio, 10-21-2004 17:17:00

The ball socket ramps in the disc & drum are worn allowing the balls to ramp up too far to return. Not inexpensive, check a dealer then check EPS.

Equipment Parts Source, Inc.

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Joe (Wa)

10-21-2004 21:00:38

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Re: Case 580 CK Brake lock-up in reply to just 580's, 10-21-2004 18:59:48

I have the ball & ramp type actuators in a 311b that did the same thing. The tractor sat outside for years and rain water leaked into the housings at the top mixing with brake dust and corrosion forming a goop that would make the balls stick in the ramps.

Disassemble, clean and check ramps are fairly smooth. Balls should be smooth & round w/o pitting or corrosion. Make sure the weep holes in the bottom of the housings are clear.

The balls in mine were chromed with some of it worn through. I plan to go up from 7/8" to 15/16" or possibly 1" balls to make up for dressing the ramps next time I have to get into the brakes.

Joe

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Ralph D'Ambrosio

10-22-2004 11:29:27

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Re: Case 580 CK Brake lock-up in reply to Joe (Wa), 10-21-2004 21:00:38

Thanks for the info. I have another question on the subject. Is it acceptable to use larger balls?
Thanks again,
Ralph

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Joe (Wa)

10-22-2004 14:02:32

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Re: Case 580 CK Brake lock-up in reply to Ralph D'Ambrosio, 10-22-2004 11:29:27

Ralph, I am not sure larger balls are the answer since I haven't tried them yet. Considering the cost of new plates I think it is worth a try.

When you separate the actuator plates, I think you will find wear ridges in the ramps as I did. The ramps have to be fairly smooth and dressing up requires metal removal hence the larger balls to keep the same spreading configuration.

Mine are 7/8" dia and I am going to try the larger chrome balls at the link. Do a search "steel bearing balls" and then select the size that you need to see what is avail. The balls are very cheap and worth a try IMHO.

Joe

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Ralph D'Ambrosio

11-02-2004 06:38:51

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Re: Case 580 CK Brake lock-up in reply to Joe (Wa), 10-22-2004 14:02:32

Thanks Joe!
I"m going to dress the ramps and try the 1-1/8 balls (the 580 already has the 1" balls). What material would you suggest? Stainless?
Tahnks again,
Ralph

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