Testing Exhaust Gas Color - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02625-06

Testing exhaust gas color

a Exhaust gas color measurement tools
Symbol Part No.
1 799-201-9001 Handy smoke checker
Commercially
B
2
available
k
Be careful not to touch any hot part when re-
moving or installing the measuring instru-
ments.
a If an air source and an electric power source are
not available in the field, use handy smoke
checker B1. When recording official data, use
smoke meter B2.
1.
Measuring with handy smoke checker B1
1) Fit a sheet of filter paper to smoke checker
B1.
2) Insert the exhaust gas intake pipe into the
exhaust pipe.
3) Start the engine and keep it running until the
engine coolant temperature rises to the oper-
ating range.
4) Start the engine and accelerate it suddenly or
run it at high idle and then operate the handle
of smoke checker B1 in order to suction
exhaust gas to the filter paper.
5) Take out the filtering paper and compare it
with the attached scale for judgement.
6) Remove the measurement tool after the
measurement, and make sure that the
machine is back to normal condition.
10
Part name
Smoke meter
2. Measuring with smoke meter B2
1) Insert probe [1] of smoke meter B2 to the
outlet of the exhaust pipe and secure it to the
exhaust pipe with a clip.
2) Connect the probe hose, receptacle of the
accelerator switch and air hose to smoke
meter B2.
a Limit the supplied air pressure to 1.5 MPa
2
}.
{15 kg/cm
3) Connect the power cable to an AC recep-
tacle.
a Confirm that the smoke meter power
switch is in the OFF position, before con-
necting the power cable to an outlet.
4) Loosen the cap nut of the suction pump and
fit in the filter paper.
a Fit in the filter paper securely so that the
exhaust gas may not leak.
5) Turn on the power switch of smoke meter B2.
6) Start the engine and keep it running until the
engine coolant temperature rises to the oper-
ating range.
30 Testing and adjusting
PC300, 350-8