MAINTENANCE Table 2. Lines 13 12 11 M137-07-001 12 13 NOTE: Refer to the illustrations in Fig.2 for each check point location or for a description of the abnormality. Use genuine Hitachi parts M137-07-007 Fig.2 Table 3. Oil cooler 15 14 16 NOTE: Refer to the illustrations in Fig.3 for each check point location.
M1U1-07-051 Fig.3 7-49 Interval(hours) Check Points Abnormalities Remedies Daily Contact surfaces of flange joints Welded surfaces on joints Leak (11) Leak (12) Replace O-ring and/or retighten bolts Replace Every 250 hours Joint neck Welded surfaces on joints Clamps Crack (13) Crack (12) Missing Deformation Loose Replace Replace Replace Replace Retighten Interval(hours) Check Points Abnormalities Remedies Every 250 hours Contact surfaces of flange joints Oil cooler Coupling and rubber hose Leak (14) Leak (15) Leak (16) Replace O-ring and/or retighten bolts Replace Retighten or replace