Komatsu SDA6D140E-3 - S-9 Oil Becomes Contaminated Quickly

140-3 SERIES
12-117
TROUBLESHOOTING S-9
S-9 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
• Improper fuel used
• Improper oil used
• Operation under excessive load