Genie GR-20J Service Manual

Also see for GR-26J: Operator's manual Installation instructions Operator's manual

Contents

Genie GR-20J Service Manual Manual pdf 92 page image

Section 4 • Repair Procedures4 - 46 GR-20J • GR-26J Part No. 227656September 2016NON-STEER AXLE COMPONENTS11-2Drive BrakeHow to Remove the Drive Brake1 Block the wheels at the steer end of themachine.2 Turn the key switch to ground 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.3 Raise the jib boom to the maximum height.4 Turn the key switch to off position and push inthe red Emergency Stop button to the offposition at the ground control.5 Open the turntable cover at the ground controlside of the machine.6 Tag and disconnect the cables from the groundterminal of the battery.7 Remove the fasteners securing the rear chassiscover to the chassis at the non-steer end of themachine. Remove the chassis cover. Lay thecover and fasteners to the side.8 Tag and disconnect the two wire harnessconnectors at the steel bar.a b c d ea drive brakeb drive motor assemblyc speed reducer assemblyd mounting platee fasteners9 Remove the fasteners securing the steel bar tothe chassis. Set the fasteners to the side.10 Turn over the steel bar and cut the zip tiesattaching the two wire harness connectors tothe steel bar. Lay the steel bar to the side.11 Remove the fasteners securing the drive braketo the drive motor assembly. Set the fastenersto the side.12 Carefully remove the drive brake from the drivemotor assembly.Torque specificationsBrake mounting fasteners, dry 75 ft-lbs102 NmBrake mounting fasteners, lubricated 56 ft-lbs76 Nm