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7. Place a drain pan directly underneath the drain plug (P) to
receive drained oil.
8. Remove the drain plug (P) slowly to drain the oil, keeping from
contact with draining oil.
9. Check the drained oil. If check finds a considerable amount of
metal powder and foreign objects, contact our sales service
agency
10. Put in the drain plug (P) and secure it.
11. Install the inspection cover (3), and secure it with the four
mounting bolts (4).
12. Supply the hydraulic oil to a specified level point from the filler
cap (F), visually checking the oil level gauge (G).
13. Close the filler cap (F) after replenishment of the oil.
NOTES
Wipe off the oil completely if spilled.
14. Install the inspection cover (1), and secure it with the three
mounting bolts (2).
15. See “Operation 2.19 Boom Derricking Operation” to lower the
boom completely, and stop the engine.
16. Use the following procedure for air bleed.
(1) Start the engine with piping and hydraulic equipment filled with oil.
Make sure the engine runs at low idle for 10 minutes.
(2) Move the cylinders and winch motor slowly with a crane control lever at low idle speed.
Always stop the boom derricking cylinder and telescoping cylinder approx. 100mm back from the
stroke end when operating the cylinders.
Repeat this task 4 to 5 times.
(3) Allow all the outriggers to be extended, referring to “Operation 2.14 Outrigger Setting Operation”.
Extend and retract the outrigger cylinder, keeping the machine down on the ground.
Always stop the outrigger cylinder approx. 100mm back from the stroke end when operating the
cylinder.
Repeat this task 4 to 5 times.
17. See “Operation 2.24 Outrigger Stowing Operation” to stow the outriggers.
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