Genie Articulated Boom Lift S-80/4WD

- Test Secondary Boom Angle Sensor - Z-135/70 and ZX-135/70

A properly functioning secondary boom angle sensor is essential to safe machine operation. The ECM at the ground controls (TCON) monitors the position and angle of the secondary boom using the signal from the secondary boom angle sensor

The secondary boom angle sensor signal is used to control the ramping of the secondary boom

Note:The turntable level sensor must be tested before starting this procedure. Refer to Maintenance Procedure, Test the Turntable Level Sensor

Note: A digital level will be required to perform this procedure

Note: A kit is available through Genie Product Support (Genie part number 58351). This kit includes a digital level with a magnetic base and cable harnesses

Note: A properly calibrated digital level is essential to proper machine calibration. Refer to the manufactures calibration information

Note: Use the following chart to identify the description of each LCD screen control button used in this procedure

1. Turn the key switch to ground control and pull out the red Emergency Stop button to the on position at both ground and platform controls

- Test the Aircraft Protection System (if equipped)

Testing the machine aircraft protection system is critical to safe machine operation. If the boom is allowed to operate when the proximity switch is not functioning correctly it could result in machine and property damage

Note: Start this procedure with the machine in the fully stowed position

1. Turn the key switch to platform control and pull out the red Emergency Stop button to the on position at both the ground and platform controls

2. Start the engine from the platform controls

3. Move the yellow bumper at the bottom of the platform 4 inches/10 cm in any direction

4. Activate each function control handle or toggle switch

- Check the Oscillate Directional Valve Linkage (if equipped)

1. Remove the drive chassis cover and the axle covers from the non-steer end of the drive chassis

2. Locate the oscillate directional valve inside of the non-steer axle and inspect the linkage for the following:

1) Lock nut is tight against yoke

2) Yoke clevis pins are installed

3) Cotter pins are installed through clevis pins

4) Linkage is properly attached to directional valve;

- Visual Inspection of the Hydraulic Oil

- Inspect the Hydraulic Filters

- After performing maintenance, perform scheduled services;

- Test the Safety Envelope and Circuits - Z-80/60

Testing the machine safety envelope is critical to safe machine operation. If the boom is allowed to operate when a safety switch is not functioning correctly, the machine stability is compromised and may tip over

For limit switch and angle sensor information, Refer to appropriate Service and Repair Manual for your machine

Note: Use the following chart to identify the description of each LCD screen control button used in this procedure

Secondary Boom #1 Angle Safety Limit Switch, LSS2AS

1. Turn the key switch to ground control and pull out the red Emergency Stop button to the on position at both ground and platform controls

2. Start the engine from the ground controls

3. Press the (plus)(minus) buttons on the LCD screen to activate status mode

4. Press the enter or previous button on the LCD screen until secondary boom length is displayed