Table of Contents
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OPERATION
Problem
Excessive oil consumption
Exhaust gas is white or blue
Exhaust gas is black
Engine hunts
Abnormal noise generated
(combustion or mechanical)
Error code is displayed on monitor
Alarm buzzer sounds
Engine suddenly loses power
(entered delayed mode)
Main causes
•Oil leakage
•Excessive oil in il pan
•Worn piston, ring, cylinder liner
•Improper fuel
•Defective turbocharger
•Clogged air cleaner element
•Worn piston, ring, cylinder liner
•Defective compression
•Defective turbocharger
•Defective injector
•Air entering suction side of fuel line (•Check, repair)
•Low-grade fuel being used
•Overheating
Contact your Komatsu distributor
TROUBLES AND ACTIONS
Remedy
(•Check, repair)
•Add oil to specified level. See
CHECK BEFORE STARTING.
(•Replace)
•Replace with specified fuel
(•Check, replace)
•Clean or replace. See WHEN
REQUIRED.
(•Check, repair)
•See adjustment of clearance
above
(•Check, replace)
(•Check, adjust, repair)
•Change to specified fuel
•Refer to"Radiator water level moni-
tor lights up" as above
3-153
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