If the engine does not start, repeat steps 1 and 2.
Keep away from the engine while it is being started and
running.
3.
After the engine starts, run it for approximately 5 minutes
to bleed all air from the fuel circuit.
4.
After approximately 5 minutes, stop the engine. Then, start
the engine as usual.
METHOD FOR CHECKING ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE
CLAMPS
Ask your Komatsu distributor for checking the tightening of the clamps between the air cleaner - turbocharger -
aftercooler - engine.
METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRES-
SURE IN ACCUMULATOR (FOR BREAKER)
(if equipped)
A special tool is needed for checking and charging of nitrogen gas. Ask your Komatsu distributor to perform this
work.
METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Accordingly, wait until they have cooled down before starting the work.
• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pres-
sure, then remove it.
1.
Remove nut (2) of breather assembly (1) at the top of the
hydraulic tank, then remove cover (3).
2.
Replace filter element (4) with a new one.
3.
Install cover (3) and nut (2).
In order not to damage the threaded portion of nut, tighten
nut (2) by hand until it is seated, then tighten it 15 to 30° by
using a tool.
NOTICE
If breather assembly (1) is removed for replacement,
apply a tool to bolt (5) and tighten it.
Tightening torque: 68 to 78 Nm{6.9 to 8.0 kgm}
MAINTENANCE MAINTENANCE PROCEDURE
4-63
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