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1999 Case 85XT parking brake doesn’t engage intermittently.

1999case85xt

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Joined
Sep 11, 2024
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Has anyone had issues with the brake hanging up electrically? Or not applying?

Interlock system will work correctly after a cold start everytime. When the lap bar is up, the lap bar light goes out. When you’re off the seat the seat light goes out. Seat timer output appears to be working correctly as well. If you break the interlock circuit while in motion it will drop the brake like it should. The brake button on the left control works as it should.

After running for awhile it will not apply the brake when the lap bar is up and you are off the seat. When this occurs the seat and lap bar lights are out, parking brake light is off. travel controls still work but loader controls didn’t. So when changing attachments if the lap bar is up and you lean forward off the seat to lock or unlock the attachment, if you bump the controls the loader will move forward or backward. Or if you were to get out of the machine on a hill with the lap bar up it will roll.

When the brake is engaged it works and works well. Machine has just 950 hours on it. I hit the parking brake button when testing and it didn’t engage. Then while driving the brake dropped and stopped me on a dime. Everyone else appears to have issues releasing the brake. Has anyone had issues with the brake hanging up electrically?

NOR solenoid unhooked read 6.8ohms which according to the manual seems fine. This was when everything was working correctly.
 
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