• Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden
stops, and sudden changes in direction of the machine.
METHOD FOR ENGINE WARM-UP OPERATION
NOTICE
• Do not perform operations or operate the levers sharp-
ly while the hydraulic oil is at low temperature. Per-
form warm-up operation until the hydraulic oil temper-
ature caution lamp is displayed in green. Performing
the warm-up operation properly will extend the service
life of the machine.
Do not suddenly accelerate the engine before the
warm-up operation is completed.
• Do not run the engine at low idle or high idle under no
load for more than 20 minutes. This will have an ad-
verse effect on the environment and also on the inter-
nal structure of the turbocharger and engine. If it is
necessary to run the engine at idle, apply a load from
time to time or run at a medium speed.
• If the engine oil pressure caution lamp on machine
monitor (2) lights up and the buzzer sounds intermit-
tently, stop the engine and check it.
1.
Turn fuel control dial (1) to a middle point between Low
idle (MIN) position and High idle (MAX) position.
2.
Run the engine at medium speed under no load for ap-
proximately 5 minutes (warm-up operation).
3.
After the warm-up operation, check that each gauge and
caution lamp indicate the normal values.
If there is any abnormality, have the maintenance and re-
pair performed.
4.
Operate under light load until the engine coolant tempera-
ture gauge on machine monitor (2) indicates green range
(A) to (C).
• (A) to (B): Red range
• (A) to (C): Green range
• (C) to (D): White range
5.
Check for abnormal exhaust gas color, noise, or vibration.
If any abnormality is found, contact your Komatsu distribu-
tor.
MACHINE OPERATIONS AND CONTROLS
OPERATION
3-174
Summary of Contents for D155AX-8E0
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