Komatsu 70E-5 Series (2D70E) & 76E-5 Series (3D76E) Engines Manual

Table of Contents

1. GENERAL……………………………………………………………………………………………… 1-2
2. INSPECTION AND ADJUSTMENT …………………………………………………………… 2-1
3. TROUBLESHOOTING…………………………………………………………………………….. 3-1
4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES……………… 4-1
5. LUBRICATION SYSTEM…………………………………………………………………………. 5-1
6. COOLING SYSTEM………………………………………………………………………………… 6-1
7. FUEL INJECTION PUMP/GOVERNOR……………………………………………………… 7-1
8. THE SPECIFICATIONS OF A STARTING MOTOR AND THE
CHARACTERISTICS ………………………………………………………………………………. 8-1
9. ALTERNATOR……………………………………………………………………………………….. 9-1
10. ELECTRIC WIRING………………………………………………………………………………. 10-1
11. SERVICE STANDARDS………………………………………………………………………… 11-1
12. TIGHTENING TORQUE FOR BOLTS AND NUTS…………………………………….. 12-1

Cooling water path flushing and maintenance
Rust and water scale will accumulate in the cooling system through many hours of operation. This lowers the engine cooling effect. Oil coolers (attached to turbocharged engines and some of naturally aspirated engines) quickly deteriorate the lube oil. The cleaning and maintenance of the following parts are necessary in accordance with the cooling water replacement.
Cooling system parts: radiator, cooling water pump, thermostat, cylinder block, cylinder head, oil cooler.