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5. Periodic Inspection/Maintenance
5.3 Periodic Inspection List
Maintenance Items
Check for looseness in pipe connecting part,
and wear and tear of pipe.
Check oil, water, fuel and air leak
Check functions of all instruments and devices
Clean exterior of the oil cooler
Change oil separator
Change nylon tubes
Change rubber hoses
Change O-ring of unloader
Change pressure regulator
Check consumable parts of auto-relief valve.
Check consumable parts of vacuum-relief
valve.
Performance check of pressure control valve
Check O-ring and piston of pressure control
valve
Check solenoid valve
(Re-usable after check, if normal.)
Change oil seal/bearing
Items marked with a ○ are to be performed by the customer. For the following items or clauses
marked with a ●, contact your nearest dealer because they require expert technical knowledge to
perform.
The items or parts marked ※1 show that they should be replaced primarily.
※ The items or parts marked ☆ should be replaced every 2 years even if they are not in disorder within their
periodical maintenance interval because their materials will change or become degraded as time passes.
Also for the same reason, the parts marked ★ should be replaced every 3 years.
※ The indicated replacement periods are rough estimates. Depending on the usage conditions or
environment, inspection/maintenance should be conducted earlier.
※ The above intervals of inspection and maintenance are respectively based on 1,000 hours of use per year.
Daily
250
300
500
○
○
○
○
○
○
※1○
○
※1○
○
○
5-3
(Unit: Hour)
1,000 2,000 3,000 8,000
○
○
☆●
☆●
★●
★●
●
★●
★●
★●
★●
●
●
Ref.
Page
3-6
3-6
3-8
3-13
3-13
5-9
5-10
5-11
5-11
5-12
5-13
5-16
5-16
5-17
5-17
5-17
5-17
5-18
5-18
5-18
5-19
5-20
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