Komatsu PC1250-11, Original Instructions Manual

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• Display (A): when temperature is correct: Caution
lamp background (C) is blue.
• Display (B): when temperature is low: Caution lamp
background (C) is white.
9.
Check that the engine coolant temperature caution lamp
(1) displays the correct temperature.
• Display (A): when temperature is correct: Caution
lamp background (C) is blue.
• Display (B): when temperature is low: Caution lamp
background (C) is white.
If it displays the low temperature, perform additional warm-
up operation of the engine until the engine coolant temper-
ature caution lamp (1) displays the correct temperature.
10. Check that the hydraulic oil temperature caution lamp and engine coolant temperature caution lamp display
the correct temperature, then check that all the instruments, caution lamps, and pilot lamps on the machine
monitor are in the following conditions.
• Radiator coolant level caution lamp (8): OFF
• Engine oil level caution lamp (9): OFF
• Air cleaner clogging caution lamp (10): OFF
• Charge level caution lamp (11): OFF
• Engine oil pressure caution lamp (12): OFF
• Engine preheating pilot lamp (13): OFF
• Engine coolant temperature gauge (14): Indicator is in
green range
• Engine coolant temperature caution lamp (1): Displays
correct temperature
• Hydraulic oil temperature gauge (15): Indicator is in
green range
• Hydraulic oil temperature caution lamp (7): Displays
correct temperature
• Fuel level caution lamp (16): Displays correct level
• Fuel gauge (17): Indicator is in green range
11. Check for abnormal exhaust gas color, noise, or vibration.
If any problem is found, contact your Komatsu distributor.
NOTICE
Warm-up all the hydraulic component by performing the warm-up operation for hydraulic system in cold
weather (ambient temperature less than 0 °C) even when the hydraulic oil temperature caution lamp dis-
plays the correct temperature.
12. Hydraulic system warm-up operation in cold weather
MACHINE OPERATIONS AND CONTROLS OPERATION
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