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Caidyn Meyer 
Bronze Level
Joined: 22 Dec 2024
Location: Sac City Iowa
Points: 2
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 Topic: Allis Chalmers 190 Gas Brakes
Posted: 22 Dec 2024 at 11:46pm |
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Every so often while in motion one side of the brakes likes to lock up. Any idea on what it could be?
Edited by Caidyn Meyer - 22 Dec 2024 at 11:47pm
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8070nc
Orange Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 649
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Posted: 23 Dec 2024 at 9:08am |
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I think if you take the cover off and pull the disc out you will find your problem. Stretched spring,worn out ball ramps or broken brake material
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 5250
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Posted: 23 Dec 2024 at 1:08pm |
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Wear a mask when you remove the cover, the asbestos dust in there is harmful. Vacuum the dirt and dust before disassembling. The balls and ramps as said above are a common issue. Thankfully mine did not have flat spots worn in either. Installed new brakes and cleaned everything well and they work great. Not too bad of a job since they are external brakes.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
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Posted: 24 Dec 2024 at 10:06am |
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When it locks up, it usually means it is time to replace the shoes and pads.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Fritz
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Joined: 19 Feb 2024
Location: Wellington ohio
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Posted: 27 Dec 2024 at 10:52am |
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Oil getting on the disks will cause this because the brake action is so sensitive that if they get sticky , the stickiness will energize the brakes.
Possibly also the internals are so filthy that condensation could be causing the same effect.
Take it apart, clean everything up, and rough up the disks on the concrete , or if they look doubtful, replace them.
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