6-11
TROUBLESHOOTING
Symptoms Major causes Remedies
Slewing is not possible or not
smooth.
• Insufficient grease on slew
bearing
• Grease the bearing.
Refer to page 5-26.
Hydraulic oil temperature is
too high
• Hydraulic oil level too low • Add up to the specified
level.
Refer to page 5-18.
Starter motor turns but
engine does not start
• Insufficient fuel • Add fuel.
Refer to page 5-18.
• Air in fuel system • Bleed air.
Refer to page 6-8.
• Water in fuel system • Drain water.
Refer to page 5-27.
Crawlers come off • Crawlers too loose • Increase the tension.
Refer to page 5-24.
Engine exhaust is white or
bluish
• Excessive engine oil • Adjust to the specified level.
Refer to page 5-17.
• Poor fuel • Replace the fuel.
Engine exhaust is
occasionally black
• Air cleaner is clogged • Clean the air cleaner.
Refer to page 5-32.
Irregular noise is produced
from the engine
(combustion or mechanical
noise)
• Low quality fuel is being
used
• Replace the fuel.
• Engine is overheating • Refer to “If the engine
overheats” on page 6-3.
• Damage inside the muffler • Replace the muffler.
For replacement, ask your
sales or service dealer.
OTHER SYMPTOMS
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