Hitachi Zaxis 850LC-3 Operator's Manual page 248

17. Install cover (2). After removing cap (1), make sure suc-
tion filter and rod assembly (4) is in correct position.
Tighten the bolts to 50 N•m (5.1 kgf•m, 37 lbf•ft).
18. Add oil until it is between the marks on the sight gauge.
IMPORTANT: If the hydraulic pump is not filled with oil, it
will be damaged when the engine is started.
19. Loosen plug (8) on the top of the pump.
20. Fill the pump with oil through plug (8) port.
21. Retighten the plug.
22. Start the engine and run at slow idle. Put a "Do Not Oper-
ate" tag on the pilot control shut-off lever. Make sure the
pilot control shut-off lever is in the LOCK position.
23. Slowly loosen plug (7) to release trapped air. Retighten
the plug when air stops and oil flows from the plug.
24. Loosen port (7) on the top of hydraulic fan pump. Purge
air from the hydraulic pump and fill the pump with oil
through the port.
25. After filling the pump with oil, retighten the port. Then,
start the engine and run at slow idle.
26. Slowly loosen port (7) to release trapped air. Retighten
the plug when air stops and oil flows from the plug.
27. Purge air from the hydraulic system by running the en-
gine at slow idle and operating all control levers slowly
and smoothly for 15 minutes.
28. Position the machine with the arm cylinder fully retracted
and the bucket cylinder fully extended.
29. Lower the bucket to the ground.
30. Turn the auto-idle switch off.
31. Stop the engine. Remove the key from the key switch.
32. Pull the pilot control shut-off lever to the LOCK position.
33. Check the oil level gauge. Remove cover (2) to add oil if
necessary.
MAINTENANCE
Engine
7-36
6
7
Fan Pump
M1JB-07-038
M1JB-07-046