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Page 110 December 2007

Telescopic Boom Series

Models SJ61T & SJ66T

194312

Section 4 - Troubleshooting InformationService and Maintenance

Table of Contents

4.1-44 High Throttle Inoperative ..............................................................................................................................134

4.1-45 Brake will not Release...................................................................................................................................135

4.1-46 No Drive and Steer .......................................................................................................................................135

4.1-47 No Forward Drive ..........................................................................................................................................135

4.1-48 No Reverse Drive ..........................................................................................................................................135

4.1-49 No High Speed Drive ....................................................................................................................................136

4.1-50 No Elevated Drive .........................................................................................................................................137

4.1-51 No Left Steer .................................................................................................................................................137

4.1-52 No Right Steer...............................................................................................................................................138

4.1-53 Direction Sensing Inoperative ......................................................................................................................138

4.1-54 Steer Direction Sensing Inoperative .............................................................................................................139

4.2 Hydraulic System

4.2-1 All Controls Inoperative...................................................................................................................................139

4.2-2 All Boom Functions Inoperative ......................................................................................................................139

4.2-3 No Main Boom Up ..........................................................................................................................................139

4.2-4 No Main Boom Down......................................................................................................................................140

4.2-5 No Turret Rotate Left .......................................................................................................................................140

4.2-6 No Turret Rotate Right ....................................................................................................................................140

4.2-7 No Boom Extend ............................................................................................................................................141

4.2-8 No Boom Retract ............................................................................................................................................141

4.2-9 No Jib Up ........................................................................................................................................................142

4.2-10 No Jib Down .................................................................................................................................................142

4.2-11 No Platform Rotation Right ...........................................................................................................................142

4.2-12 No Platform Rotation Left ..............................................................................................................................143

4.2-13 Platform will not Level Down.........................................................................................................................143

4.2-14 Platform will not Level Up .............................................................................................................................143

4.2-15 Brake will not Release...................................................................................................................................144

4.2-16 Brake will not Engage ...................................................................................................................................144

4.2-17 No Drive Forward or Reverse .......................................................................................................................144

4.2-18 No Forward Drive ..........................................................................................................................................145

4.2-19 No Reverse Drive ..........................................................................................................................................145

4.2-20 No High Speed Drive ....................................................................................................................................145

4.2-21 No Right Steer...............................................................................................................................................145

4.2-22 No Left Steer .................................................................................................................................................145

4.2-23 Axle Will Not Oscillate ...................................................................................................................................145

4.2-24 Axle Will Not Lock .........................................................................................................................................146

4.3 Load Sensing System - CE

4.3-1 Green Power LED is not Flashing...................................................................................................................146

4.3-2 Load Cell red Alarm LED is ON (with platform empty) ..................................................................................146

4.3-3 Red Error LED is ON .......................................................................................................................................147

4.3-4 Load Cell red Alarm LED is OFF (with platform overloaded) .........................................................................147

4.3-5 Platform Indicator Light does not turn ON .....................................................................................................147

4.3-6 Audible Alarm does not turn ON ....................................................................................................................147

4.3-7 Boom and Drive Functions are Enabled (with boom extended) ....................................................................147