4.17
1500 HOUR INSPECTION & MAINTENANCE PROCEDURES
Thoroughly read and understand "1. SAFETY PRECAUTIONS" of this manual before performing the
inspection and maintenance.
Follow this section together with daily, 50-hour, 250-hour, 500-hour and 1000-hour inspection and
maintenance.
4.17.1
INSPECTING AND ADJUSTING ENGINE
Checking, Adjusting and Cleaning Fuel Injection Valves
If the exhaust color is not good during operation and the engine output is lower than before, it may be
caused by bad injection condition of the fuel injection valves.
Optimize the fluid injection condition and tune the engine for the best performance.
Checking and Adjusting Fuel Injection Timing
Adjust the fuel injection timing to achieve the best engine performance.
Cleaning EGR Cooler
On the cooling water chamber side of the EGR cooler, rust and water scale are adhered after a
long-time use, which may deteriorate the cooling of EGR gas. On the exhaust passage side, too,
carbon is adhered, becoming a resistance to exhaust gas circulation and deteriorating the exhaust
emission value. Clean this part at least every 1500 hours.
Checking Crankcase Breather System
The crankcase breather system must work properly in order to ensure that the engine complies with
the emission regulation throughout its useful life.
Contact KOBELCO or KOBELCO authorized dealer/distributor for inspection and adjustment of the
engine.
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4. INSPECTION AND MAINTENANCE
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