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9. See “Operation 2.1.2 Checking Before Operation” to check the
oil level in the hydraulic oil tank.
Prompt oil refilling is required if check finds insufficient oil.
10. Install the inspection cover (1), and secure it with the three
mounting bolts (2).
11. See “Operation 2.19 Boom Derricking Operation” to lower the
boom completely, and stop the engine.
12. 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.
13. See “Operation 2.24 Outrigger Stowing Operation” to stow the outriggers.
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