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Gregory HallAug 3, 2025
What to do if the parameter arm on my John Bean VPI System Wheel Balancers is not measuring rim distance?
- PPeggy ClarkeAug 4, 2025
If the parameter arm isn't measuring rim distance, and the machine locks up, it could be due to a malfunction in the parameter arm itself, caused by an electrical system failure or a loose harness connection. You can either replace the parameter arm or manually enter the parameters to continue using the machine.