Check Accelerator Pedal Operation, And Exhaust Gas Color And Noise - Hitachi ZW140-6 Operator's Manual

Check Accelerator Pedal Operation, and Exhaust Gas
Color and Noise
--- every 10 hours (daily)
d
WARNING: Move the forward/reverse lever to neutral.
Apply the parking brake. After horizontally resting the
bucket on the ground, set the wheel stoppers.
While slowly stepping on accelerator pedal (1), check that the
engine speed smoothly increases. Then, while slowly returning
accelerator pedal (1), check that the engine speed smoothly
decreases.
If dust and/or soil accumulate in vicinity of accelerator pedal
(1), remove them.
Exhaust Gas Color and Noise:
d
DANGER: Ventilate the shop with fresh air when
carrying out warm-up operation indoors. Failure to
do so may cause intoxication by exhaust gas, possibly
resulting in personal death accident.
IMPORTANT: This machine is equipped with the engine
that meets Stage IIIB emission requirements. Never
attempt to modify the inlet and exhaust system.
Exhaust gas color is normally transparent or light blue.
Although exhaust gas color slightly becomes white
immediately after the engine is started or quickly
accelerated, this symptom is not abnormal.
If the exhaust gas color turns black, white, brown, or gray,
check the engine oil level and the fuel supply system for any
abnormality. In addition, check that no abnormal noise is
heard coming from the engine or the muffler.
MAINTENANCE
7-106
1
MNDB-01-002