Genie Articulated Boom Lift Z-20N

Drive hub specifications require that this procedure be performed after the first 50 hours of operation

After the initial oil replacement, specifications require that this procedure be performed every 1000 hours

Replacing the drive hub oil is essential for good machine performance and service life. Failure to replace the drive hub oil may cause the machine to perform poorly and continued use may cause component damage

1. Select the drive hub to be serviced. Drive the machine until one of the two plugs is at the lowest point

2. Remove the plugs and drain the oil into a suitable container

3. Drive the machine until one of the two plugs is at the highest point

4. Drive hubs with 2 plugs: Fill the hub until the oil level is even with the bottom of the lowest plug hole. Refer to Specifications, Hydraulic Specifications

- Check the Track Tension and Fastener Torque, TRAX Models - S-40 and S-45 Models

Maintaining proper track tension and properly torqued fasteners is essential to good machine performance and service life; The machine will not operate properly with a track that is incorrectly tensioned. Continued use of a machine with incorrectly tensioned tracks may cause component damage

1. Thoroughly clean the track assembly of any dirt, rocks, clay, etc.

2. Chock the tracks at one end of the machine to prevent the machine from rolling

3. Center a lifting jack of ample capacity (20,000 Ibs / 10,000 kg) under the drive chassis between the tracks at the other end of the machine

4. Lift the machine until the tracks are off the ground and then place jack stands under the drive chassis for support

5. Visually inspect the section of track under the bogey wheels

Result: There should be less than 1 inch / 2.5 cm of gap between the bogey wheels and the inside surface of the track. Proceed to step 7

Result: There is 1 inch / 2.5 cm or more of gap between the bogey wheels and the inside surface of the track. Proceed to step 6

- Test the Primary Boom Angle Sensor - SX-105 XC, SX-125 XC, SX-135 XC, SX-150 and SX-180

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

The primary boom angle sensor signal is used to control the ramping of the primary boom, limiting the speed of the primary boom to 2.3 feet / 0.7 meters per second

Note: The turntable level sensor must be tested before starting this procedure. Refer to Maintenance Procedures, 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

Note: Perform this procedure with the booms in the fully stowed position and the axles fully extended

This maintenance procedure applies to the following models: S-100, S-105, S-120, S-125, S-100HD, S-120HD, SX-105 XC, SX-125 XC, SX-135 XC, SX-150, SX-180, Z-80/60, Z-135/70 and ZX-135/70

Perform this procedure with the machine on a firm, level surface with the axles extended

Perform this procedure with all weight, tools, equipment and personnel removed from the platform

If any boom safety limit switches are faulty, the primary boom will only retract and not lower

Turn the key switch to the ground control and pull out the red Emergency Stop button to the on position. Start the engine

Fully raise the secondary boom then extend it approximately 4 ft / 1.2 m

Raise the primary boom approximately 15° then extend it approximately 4 ft / 1.2 m

Turn the key switch to the off position to turn off the engine. Turn the key switch back to ground controls

Remove the key from the main key switch and insert the key into the bypass/recovery key switch

- Test the Safety Envelope Limit Switches, Z-135/70, ZX-135/70, SX-105 XC, SX-125 XC, SX-135 XC, SX-150 and SX-180 Models

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

Note: Perform this procedure with the boom in the stowed position

Note: Perform this procedure with the axles extended

Note: Two people will be required to perform this procedure

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

Z-135/70 and ZX-135/70 Models:

Secondary Boom #1 Retracted Safety Limit Switch, LSS1RS

1. Working at the platform end of the turntable, support and secure the lower turntable riser end cover to a suitable lifting device