Komatsu WA700-3 Wheel Loader Repair Manual

Serial Number:
50001 and up (SEBM013312)
51005 and up (SEBM032802)
Manuals: Shop Manual
01 General ………………………………………………………………………………… 01-1
10 Structure and function……………………………………………………………..10-1
20 Testing and adjusting…………………………………………………………….. 20-1
30 Disassembly and assembly……………………………………………………… 30-1
40 Maintenance standard…………………………………………………………… 40-1
90 Others………………………………………………………………………………….. 90-1
Oil becomes contaminated quickly
General causes why oil becomes contaminated quickly
Entry of exhaust gas into oil due to internal wear
Clogging of lubrication passage
Defective combustion
Improper fuel used
Operation under excessive load • Oil change interval is too long
General causes why fuel consumption is excessive
Leakage of fuel
Defective condition of fuel injection
Excessive injection of fuel
Defective HPI sensor
Oil pressure caution lamp lights up (drop in oil pressure)
General causes why oil pressure caution lamp lights up
Leakage, clogging, wear of lubricating system
Defective oil pressure control
Improper selection of fuel (insufficient viscosity)
Deterioration of oil due to overheating