Prepare Machine For Maintenance - Hitachi 120-3 class Operator's Manual

Hydraulic excavator

Table of Contents

PREPARE MACHINE FOR MAINTENANCE

Before performing the maintenance procedures given in the

following chapters, park the machine as described below, un-

less otherwise specified.

1. Park the machine on a level surface.

2. Lower the bucket to the ground.

3. Turn the auto-idle switch off.

IMPORTANT: The turbocharger may be damaged if the

engine is not properly shut down.

4. Run the engine at slow idle speed without load for five

5. Turn the key switch OFF. Remove key from switch. (If

maintenance must be performed with engine running,

do not leave machine unattended.)

6. Pull the pilot control shut-off lever (1) to the LOCK posi-

7. Before performing any work on the machine, attach a tag

on the right control lever.