Maintenance Interval For Hydraulic Breaker - Komatsu PC290LC-11 Operation & Maintenance Manual

MAINTENANCE
METHOD FOR CHECKING FAN BELT TENSION AND REPLACING FAN BELT ................................... 4-62
EVERY 2000 HOURS MAINTENANCE ......................................................................................................... 4-62
METHOD FOR CHANGING OIL IN FINAL DRIVE CASE ....................................................................... 4-63
METHOD FOR CLEANING HYDRAULIC TANK STRAINER .................................................................. 4-63
METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRESSURE IN ACCUMULA-
TOR (FOR CONTROL CIRCUIT) ........................................................................................................ 4-64
METHOD FOR CHECKING ALTERNATOR ............................................................................................ 4-67
METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE ...................................... 4-67
METHOD FOR REPLACING KCCV FILTER ELEMENT ......................................................................... 4-67
METHOD FOR REPLACING DEF FILTER.............................................................................................. 4-70
EVERY 4000 HOURS MAINTENANCE ......................................................................................................... 4-72
REPLACE DEFINED LIFE PARTS.......................................................................................................... 4-73
METHOD FOR CHECKING WATER PUMP............................................................................................ 4-73
METHOD FOR CHECKING VIBRATION DAMPER ................................................................................ 4-73
METHOD FOR CHECKING STARTING MOTOR.................................................................................... 4-74
METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT) .......................................... 4-74
METHOD FOR CHECKING AIR CONDITIONER COMPRESSOR OPERATION.................................... 4-74
METHOD FOR CHECKING FOR LOOSENESS OF ENGINE HIGH-PRESSURE PIPING CLAMP, HARD-
ENING OF RUBBER ........................................................................................................................... 4-75
METHOD FOR CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP, HARDENING OF RUBBER.
............................................................................................................................................................ 4-75
EVERY 4500 HOURS MAINTENANCE ......................................................................................................... 4-76
METHOD FOR CLEANING KDPF .......................................................................................................... 4-76
REPLACE KCCV HOSE ......................................................................................................................... 4-76
METHOD FOR CLEANING DEF TANK................................................................................................... 4-76
EVERY 5000 HOURS MAINTENANCE ......................................................................................................... 4-76
METHOD FOR CHANGING OIL IN HYDRAULIC TANK ......................................................................... 4-76
EVERY 8000 HOURS MAINTENANCE ......................................................................................................... 4-77
METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP............................................................ 4-77
EVERY 9000 HOURS MAINTENANCE ......................................................................................................... 4-77
METHOD FOR REPLACING DEF HOSE ............................................................................................... 4-77
END OF SERVICE LIFE ......................................................................................................................... 4-77

MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER

On the machine equipped with a hydraulic breaker, the hydraulic oil and grease deteriorate faster than in normal
bucket digging operations, so set the maintenance intervals as follows.
Replace hydraulic filter element
On a new machine, replace the element after the first 100 to
150 hours, then perform further replacement of the element ac-
cording to the table on the right.
Change of oil in hydraulic tank
Change the oil according to the table.
Replace additional filter element for breaker (if equip-
ped)
Use a guideline of 250 hours for use of the breaker (operating
ratio of the breaker: 50% or more), and replace the element ac-
cording to the table.
For detail, see "METHOD FOR REPLACING ADDITIONAL FIL-
TER ELEMENT FOR BREAKER (6-31)".
Replace pilot filter element (if equipped)
Use a guideline of 250 hours for use of the breaker (operating
ratio of the breaker: 50% or more), and replace the element ac-
cording to the table.
MAINTENANCE SCHEDULE TABLE
4-13