How to Perform Bobcat Loader Lift & Tilt Calibration by Actuator Test

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Bobcat Calibration procedures must be followed when replacing hydraulic control valve, actuator, Drive / Drive+Controller, ACS Controller, pump controller, hydrostatic pump, or hydrostatic motor. Failure to calibrate after component replacement may result in error codes, poor performance or reduced life of actuator(s).There are two methods to perform the lift and tilt calibration, one is the Actuator Test and the other is manually. The Actuator Test is performed with the Service PC. The Actuator Test should be used if reduced performance codes are present or when replacing a controller or actuator.The Lift and Tilt Calibration (SJC) is performed by physically moving the joysticks to provide set points to the ACS controller to actuate the lift and tilt valve. The Lift and Tilt Calibration (SJC) should be used if reduced performance codes are present or when replacing a controller or actuator.More repair topic for Bobcat,please refer to:Bobcat Excavator Repair

 

NOTE:The Actuator Test should be used as the preferred method of lift and tilt calibration. The Hydrostatic Pump Calibration (SJC / SCPA) provides set points to the Drive controller to actuate the hydrostatic controller that directs flow to a servo piston.Hydrostatic Pump Calibration (SJC / SCPA) should be performed when a desired travel path cannot be at tained or replacing the hydrostatic pump, hydrostatic motor, or controller. After Performing a Hydrostatic Pump Calibration (SJC / SCPA), Steering Drift Compensation can be used to fine tune the hydrostatic pump control.For more information on Steering Drift Compensation(See STEERING DRIFT COMPENSATION on Page 60-161-1.)NOTE: The Actuator Test calibrates the lift and tilt system therefore no further lift and tilt calibration is required if using this method.

 

Excessive actuator loading can occur if the actuator and valve spool components are misaligned. Misalignment may reduce spool stroke performance and reduce the life of the actuator.

Connect the Service PC.

If a Service PC is not available

 

NOTE:Warm the hydraulic oil to room temperature22

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