6-12
TROUBLESHOOTING
OTHER SYMPTOMS
Symptoms Major causes Remedies
Slewing is not possible or not
smooth
• Slew lock lever lock is not
released
• Release the slew lock lever
• Insufficient grease on slew
bearing
• Grease the bearing.
Refer to page 5-28.
Hydraulic oil temperature is
too high
• Hydraulic oil level too low • Add up to the specified
level.
Refer to page 5-19.
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 5-29.
• Fuel is frozen. • Warm the fuel pipe with hot
water or wait until the
ambient temperature
becomes high.
• Engine control system is
faulty.
• Adjust or repair (ask your
sales or service dealer).
• Fuel line is faulty. • Adjust or repair (ask your
sales or service dealer).
• Preheating device is faulty. • Adjust or repair (ask your
sales or service dealer).
Crawlers come off • Crawlers too loose • Increase the tension.
Refer to page 5-26.
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