Terex Genie GR-26J Service Manual

Also see for Genie GR-20J: Service manual Operator's manual

Section 4 • Repair Procedures4 - 6 GR™-20J • GR™-26J Part No. 227656GTMarch 2022How to Calibrate the Steer AngleSensorCalibration of the Steer Angle Sensor is essentialfor safe machine operation. The Steer AngleSensor controls the maximum steering angle thatcan be attained.1 Adjust the wheels at the steer end of themachine so they are in straight driving position.2 Turn the key switch to off position and push inthe red Emergency Stop button to the offposition at both the ground and platformcontrols.3 Tag and disconnect the steer angle sensor wireharness from the machine wire harness.4 With a multimeter set to read 4K±0.2 ohms,connect the leads to the green and black wiresof the potentiometer.Result: The reading is 4K±0.2 ohms.Proceed to step 5.Result: The reading is not 4K±0.2 ohms.See 10-4,How to Replace the Steer AngleSensor.5 Connect the steer angle sensor wire harness tothe machine wire harness.6 Turn the key switch to platform control and pullout the red Emergency Stop button to the onposition at both the ground and platformcontrols.Note: Rotate the red Emergency Stop button atplatform control one quarter turn in a clockwisedirection to restore the power supply. The redEmergency Stop button returns automatically tothe out, or on position.7 Simultaneously press and hold all three functionselect buttons for 3 seconds.Result: A beep sounds and three functionindicator lights will flash one after another.a joystick function enable switchb thumb rocker switchc joystickd jib boom function button BN97e lift function and turntable rotatefunction button BN63f drive function button BN130g function indicator lightsh red Emergency Stop button P28 Simultaneously press and hold the lift functionand jib boom function buttons for 3 seconds.Result: All three function indicator lights will stopflashing.9 Press and hold the joystick function enableswitch and activate the thumb rocker switchturning the wheels fully to the left.10 Press the drive function button for 1 second tovalidate the left side steering limit.11 Press and hold the joystick function enableswitch and activate the thumb rocker switchturning the wheels fully to the right.12 Press the jib boom function button for 1 secondto validate the right side steering limit.13 Press and hold the joystick function enableswitch and activate the thumb rocker switchplacing the wheels in line with the chassis.14 Press the lift function button for 1 second.15 Press the drive function button for 3 seconds.Steer Sensor calibration is complete.PLATFORM CONTROLSdhefgabc