Komatsu H75051, Operation & Maintenance Manual

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MAINTENANCE PROCEDURE
INITIAL 10 HOURS MAINTENANCE (ONLY FOR THE FIRST 100 HOURS)
Until first 100 hours operation, perform the following maintenance every 10 hours.
• Lubrication of work equipment
• Lubrication of steering cylinder pin
For details of the method of replacement or maintenance, see EVERY 100 HOURS MAINTENANCE and EV-
ERY 250 HOURS MAINTENANCE.
INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250
HOURS)
Perform the following maintenance work only after the first 250 hours of operation on new machines.
• Replace HST oil filter cartridge
• Replace hydraulic oil filter cartridge
For details of the method of replacement or maintenance. See EVERY 1000 HOURS MAINTENANCE and EV-
ERY 2000 HOURS MAINTENANCE.
WHEN REQUIRED
METHOD FOR CHECKING, CLEANING AND REPLACING AIR CLEANER
k k
WARNING
• When using compressed air, there is a danger that dirt may scatter and cause personal injury.
Always wear the protective eyeglasses, dust mask, or other protective equipment.
• When removing the outer element from the air cleaner body, it is dangerous to pull it out by force.
When working in high places or where the foothold is poor, be careful not to fall because of the re-
action when pulling out the outer element.
NOTICE
• Do not clean the element before the yellow piston shown in dust indicator (2) display enters the red
(7.5 kPa {0.08 kg/cm
2
}) position.
If the element is cleaned frequently before the yellow piston of the dust indicator enters the red
(7.5 kPa {0.08 kg/cm
2
}) position, the air cleaner will not be able to display its performance fully, and
the cleaning efficiency will also go down.
In addition, during the cleaning operation, more dirt stuck to the element will fall inside the inner
element.
• If any dirt enters the engine, it can damage the engine. Be sure to stop the engine before checking,
cleaning, or servicing the air cleaner. Do not check, clean, or service the air cleaner in strong winds,
or in a dusty place.
In addition, during the cleaning operation, more dirt stuck to the element will fall inside the inner
element.
• Replace the outer element if it is cleaned 6 times or used throughout a year. Replace the inner ele-
ment as well at the same time.
METHOD FOR CHECKING AIR CLEANER
NOTICE
The dust indicator is used to indicate the clogging on the air cleaner. The dust indicator indicates the
clogging level of the air cleaner.
Check the dust indicator before operating the machine so that cleaning of the air cleaner element is not
required during operation.
MAINTENANCE MAINTENANCE PROCEDURE
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