MAINTENANCE 3 Travel Reduction Gear Air Release Plug 1 (Oil Supply Plug) Check Oil Level --- every 250 hours 1. Park the machine on a level surface. Oil Level Check Plug 2 2. Rotate the travel motor until the imaginary line through plug (1) and plug (3) is vertical. 3. Lower the bucket to the ground. Horizontal Oil Level 4. Turn the auto-idle switch off. IMPORTANT: The turbocharger may be damaged if the en- gine is not properly shut down. Drain Plug 3 5. Run the engine at slow idle speed without load for five minutes. M104-07-019 6. Stop the engine. Remove the key from the key switch. 7. Pull the pilot control shut-off lever to the LOCK position. 1 WARNING:
Keep body and face away from the air re- lease plug. Gear oil is hot. Wait for gear oil to cool and then gradually loosen the air release plug to release pressure. 2 8. After gear oil has cooled, slowly loosen air release plug (1) to release pressure. 9. Remove air release plug (1) and oil level check plug (2). Oil must be up to the bottom of hole. 10. If necessary, add oil until oil flows out of the oil level check plug hole. (See gear oil chart) M157-07-170 11. Wrap the plug threads with sealing-type tape. Install plugs (1) and (2). Tighten plugs (1) and (2) to 69 N•m (7.0 kgf•m). 12. Check the gear oil level in the other travel reduction gear. 7-34