MAINTENANCE 4 Replace Hydraulic Tank Oil Filter --- every 1000 hours Standard Model 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 minutes. SA-039 5. Stop the engine. Remove the key from the key switch. 6. Pull the pilot control shut-off lever to the LOCK position. 1 2 CAUTION: The hydraulic oil tank is pressurized. Push the pressure release button on the air breather before removing the air breather. 3 7. Push the pressure release button on the hydraulic oil tank to release pressure. NOTE:
There is spring tension under the cover. Hold down the cover when removing last two bolts. 4 8. Hold down filter cover (2) against light spring load when removing the last two bolts (1). Remove filter cover (2). 9. Remove spring (4), and element (5). NOTE: Remove the element and inspect for metal particles and debris in the bottom of the filter can. Excessive amounts of brass and steel particles can indicate a failed hydraulic pump, motor, valve or an impend- ing failure. A rubber type of material can indicate cylinder packing failure. 5 10. Discard element (5) and O-ring (3). 11. Install a new element (5) and spring (4). 12. Install filter cover (2) with a new O-ring (3). 13.
Install and tighten bolts (1) to 49 N•m (5 kgf•m, 36 lbf•ft). M178-07-069 7-43