Komatsu D51EX-24, Operation & Maintenance Manual

Page: 289 / 382

METHOD FOR REPLACING DEF TANK BREATHER ELEMENT........................................................... 4-59
CHECK AND REPLACE ALTERNATOR DRIVE BELT TENSION AND REPLACING ALTERNATOR BELT....
............................................................................................................................................................ 4-59
METHOD FOR CHECKING FOR LOOSE ROPS MOUNT BOLTS ......................................................... 4-60
METHOD FOR CHECKING AND CLEANING FAN ................................................................................. 4-60
EVERY 2000 HOURS MAINTENANCE ......................................................................................................... 4-61
METHOD FOR CHANGING OIL IN HYDRAULIC TANK, REPLACING HYDRAULIC OIL FILTER CAR-
TRIDGE, REPLACING HST OIL FILTER CARTRIDGE, AND CLEANING HYDRAULIC TANK STRAINER
............................................................................................................................................................ 4-62
METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRESSURE IN ACCUMULA-
TOR (FOR CONTROL CIRCUIT) ........................................................................................................ 4-65
METHOD FOR CHECKING ALTERNATOR ............................................................................................ 4-67
METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE ...................................... 4-67
METHOD FOR CHECKING VIBRATION DAMPER ................................................................................ 4-67
METHOD FOR REPLACING KCCV FILTER ELEMENT ......................................................................... 4-67
METHOD FOR REPLACING DEF FILTER.............................................................................................. 4-70
EVERY 4000 HOURS MAINTENANCE ......................................................................................................... 4-73
REPLACE DEFINED LIFE PARTS.......................................................................................................... 4-73
METHOD FOR CHECKING WATER PUMP............................................................................................ 4-73
METHOD FOR CHECKING STARTING MOTOR.................................................................................... 4-74
METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT) .......................................... 4-74
METHOD FOR CHECKING FOR LOOSENESS OF ENGINE HIGH-PRESSURE PIPING CLAMP, HARD-
ENING OF RUBBER ........................................................................................................................... 4-74
METHOD FOR CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUBBER.
............................................................................................................................................................ 4-75
EVERY 4500 HOURS MAINTENANCE ......................................................................................................... 4-75
METHOD FOR CLEANING DEF TANK................................................................................................... 4-76
METHOD FOR CLEANING DEF TANK MOUNTING PORTION ............................................................. 4-76
EVERY 8000 HOURS MAINTENANCE ......................................................................................................... 4-76
METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP............................................................ 4-76
EVERY 9000 HOURS MAINTENANCE ......................................................................................................... 4-76
METHOD FOR REPLACING DEF HOSE ............................................................................................... 4-76
END OF SERVICE LIFE ......................................................................................................................... 4-76
MAINTENANCE INTERVAL WHEN DIESEL FUEL MIXED WITH BIO-FUEL IS
USED
If the diesel fuel which does not include the bio-fuel is changed to the diesel fuel mixed with bio-fuel, set the
maintenance interval as follows.
Replace the fuel prefilter cartridge
When the machine is operated first 250 hours after the diesel fuel has been changed to the diesel fuel mixed
with bio-fuel, and when the machine is operated further 250 hours.
After that, replace it within 500 hours as a periodic replacement by the service meter reading.
Replace the fuel main filter cartridge
When the machine is operated first 250 hours after the diesel fuel has been changed to the diesel fuel mixed
with bio-fuel, and when the machine is operated further 250 hours.
After that, replace it within 1000 hours as a periodic replacement by the service meter reading.
Maintenance interval after the diesel fuel has been changed to the diesel fuel mixed with bio-fuel
Operating hours of the machine Service meter
When
changed
250 hours
after chang-
ing
500 hours
after chang-
ing
Every 500 hours Every 1000 hours
Within 500
operating
hours after
changing
After 500 op-
erating hours
after chang-
ing
Within 500
operating
hours after
changing
After 500 op-
erating hours
after chang-
ing
MAINTENANCE MAINTENANCE SCHEDULE TABLE
4-13