Komatsu WA480-8, Руководство по эксплуатации и техническому обслуживанию

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• Use the engine brake together with the brake. (Using the lockup function together is more effective.)
(3) When performing the operation which needs frequent braking
• If you drive the machine or perform the work while dragging the brake, the oil temperature increases. Adjust
the travel speed by accelerator operation.
(4) When the machine travels at high speed in a long distance continuously
• Return the accelerator pedal, refrain from high speed travel, and check whether symptom changes or not.
• Turn on the E light mode or E mode or turn off the torque converter lockup switch, and apply the brake after
the speed has been decreased. After a while, the oil temperature goes down.
(5) When performing the loading work such as V-shape loading continuously for a long time
• Turn on the transmission cut-off switch and decrease the braking frequency.
• Decrease the travel speed when approaching the dump truck to reduce the load on the brake.
• Depress the brake pedal intermittently not constantly.
After a while the preceding remedies have been taken, the oil temperature decreases and the caution lamp
goes out.
If the brake oil temperature caution lamp frequently lights up, record the operation, travel speed, and the state of
braking just before the lamp lights up, then consult your Komatsu distributor.
DEF LEVEL CAUTION LAMP
DEF level caution lamp alerts when DEF tank level becomes
low.
Whenever the caution lamp lights up in red, immediately add
DEF.
Fault conditions that result in activation of the Inducement strat-
egy for engine derates to prompt to maintain or repair the emis-
sion control system.
When Lightning in red,
With Action level “L04”, DEF tank level is too low. Inducement
status is “Severe Inducement”. Engine power is under heavy
deration.
With Action level “L03”, DEF tank level is low. Inducement status is “Low level Inducement”. Engine power is
under deration.
With No Action level display.DEF tank level is lower. Inducement status is “Continuous Warning”. Need to add
DEF immediately to avoid advancing to the next Inducement status.
With No Action level display. Warning starts. Inducement status is “Warning”. Need to add DEF immediately.
When Lightning in white
When fluctuation of DEF tank level is large, frozen, or not limited to, tank level sensing is not performed correct-
ly.
When DEF is added after engine starting switch turn to OFF.
When DEF tank level sensor is defective.
REMARK
For more information about the Inducement strategy, and Inducement status concerning engine power deration,
see “HANDLE UREA SCR SYSTEM WARNING (3-139)”.
OPERATION EXPLANATION OF COMPONENTS
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