Boom Cylinder Lock (If Equipped

ON - Insert the battery disconnect switch key, and turn the battery disconnect switch key clockwise in order to activate the electrical system. The switch must be ON before you start the engine.

OFF - Turn the battery disconnect switch key counterclockwise in order to shut off the entire electrical system. The battery disconnect switch and the engine start switch serve different functions. When the battery disconnect switch is turned off, the entire electrical system is disabled. When only the engine start switch is turned off, the battery remains connected to the electrical system. Turn the battery disconnect switch key to the OFF position and remove the battery disconnect switch key when you service the electrical system or you service any other components of the machine. Turn the battery disconnect switch key to the OFF position and remove the battery disconnect switch key when the machine is left for a period of one month or longer. Adopt this procedure in order to prevent the following circumstances: • A short circuit from draining the battery • Active components from draining the battery • Draining of the battery through vandalism

Note: The battery disconnect switch should never be disconnected while the machine is running.

A raised boom can fall if a hydraulic component is removed. Sudden movement of the boom could cause personal injury or death. Remove any load from the work tool, retract the boom and install the boom cylinder lock or a suitable supporting stand before working under a raised boom.

When you are working under the boom it is necessary to install a boom cylinder lock on one of the boom cylinders.

Installation and Removal Procedures Installation

1. Park the machine. Retract and lower the boom.

Move the transmission control to NEUTRAL.

Engage the parking brake and stop the engine. 2. Start the engine and raise the boom to an angle of approximately 20 degrees. Stop the engine.

Illustration 76 g01066075

3. Install boom cylinder lock (1) onto the boom cylinder. Secure boom cylinder lock (1) in place with pin (2) and the cotter pin. 4. Start the engine. Lower the boom slowly until there is a clearance of 6 mm (0.25 inch) between the end of boom cylinder lock (1) and the boom cylinder.

NOTICE Do not operate the boom with the boom cylinder lock installed. Operating the boom with the boom cylinder lock installed will damage the boom cylinder lock and the boom cylinder.

5. Stop the engine. Remove the engine start switch key. Attach a "Do Not Operate" or a similar warning tag to the joystick control.

Removal

1. Start the engine. Slowly raise the boom to an angle of approximately 20 degrees. Stop the engine. 2. Remove the cotter pin and pin (2). Remove boom cylinder lock (1). 3. Start the engine and fully lower the boom.