Measuring Exhaust Gas Color - Komatsu WA250-6 Shop Manual

SEN03836-01

Measuring exhaust gas color

a Necessary tools
Symbol Part No.
1 799-201-9001 Handy smoke checker
A
Commercially
2
available
k
When installing and removing the measuring
instruments, take care not to touch a hot part.
a If an air source and an electric power source
are not available in the field, use handy smoke
checker A1. When recording official data, use
smoke meter A2.
a Measure the exhaust gas color under the fol-
lowing condition.
Engine coolant temperature: Within oper-
q
ating range
1. Measuring with handy smoke checker A1
1) Stick a sheet of filter paper to smoke
checker A1.
2) Insert the exhaust gas intake pipe in the
muffler (exhaust pipe).
3) Start the engine and heighten the engine
coolant temperature to the operating range.
4) Accelerate the engine suddenly and run it
at HST stalling and hydraulic stalling, and
operate the handle of smoke checker A1
so that the filter paper will absorb the
exhaust gas.
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.
12
30-110
Part Name
Smoke meter
2. Measuring with smoke meter A2
1
1) Insert the probe of smoke meter A2 in the
outlet of the muffler (exhaust pipe) and fix
it to the exhaust pipe with a clip.
2) Connect the probe hose, receptacle of the
accelerator switch, and air hose to smoke
meter A2.
a Keep the pressure of the supplied
compressed air at 1.5 MPa {15 kg/
cm
3) Connect the power cable to a 100 V AC
receptacle.
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 the filter paper.
a Fit the filter paper securely so that the
exhaust gas will not leak.
5) Turn on the power switch of smoke meter A2.
110 Testing and adjusting, Part 1

Measuring exhaust gas color

} or below.
2
WA250, 250PZ-6