1.
Check that engine coolant temperature caution lamp (1)
displays the proper temperature.
If it displays low temperature, perform additional warm-up
of the engine according to step 2 until it displays the prop-
er temperature.
• Display (A) when temperature is proper: Caution lamp
background (C) is blue.
• Display (B) when temperature is low: Caution lamp
background (C) is white.
2.
Turn fuel control dial (2) to the middle between Low idle
(MIN) and High idle (MAX) to run the engine at a medium
speed.
Run the engine with no load until engine coolant temperature caution lamp (1) displays proper temperature.
• Display (A) when temperature is proper: Caution lamp background (C) is blue.
• Display (B) when temperature is low: Caution lamp background (C) is white.
If the engine coolant temperature caution lamp displays the proper temperature, the engine warm-up operation
is completed.
Then, perform the warm-up operation for the hydraulic components.
METHOD FOR CANCELLING AUTOMATIC WARM-UP OPERATION
If it becomes necessary in an emergency to cancel the auto-
matic warm-up operation or to lower the engine speed to low
idle, do as follows.
MACHINE OPERATIONS AND CONTROLS
OPERATION
3-178
Содержание PC490-11
Страница 2: ......
Страница 25: ...LOCATION OF SAFETY LABELS a b c d e f g h KS000848 T T SAFETY SAFETY LABELS 2 5...
Страница 48: ...Map with mirror and rear view camera visibility aids fitted PRECAUTIONS FOR OPERATION SAFETY 2 28...
Страница 72: ......
Страница 73: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
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Страница 341: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 421: ...SPECIFICATIONS 5 1...
Страница 425: ...6 7m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 5...
Страница 426: ...6 7m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 6...
Страница 428: ...7 1m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 8...
Страница 429: ...7 1m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 9...
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Страница 475: ...REPLACEMENT PARTS 7 1...
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Страница 492: ...PC490 11 PC490LC 11 HYDRAULIC EXCAVATOR Form No UENAM01105 2016 KOMATSU All Rights Reserved Printed in Belgium 11 2016...