Komatsu 170-3 Series, Руководство по ремонту, Страница: 133 / 454

170-3 SERIES
12-7
TESTING AND ADJUSTING
MEASURING INTAKE AIR
PRESSURE
(BOOST PRESSURE)
When installing or removing the measuring
equipment, be careful not to touch high-temper-
ature parts.
1. Remove air intake pressure measurement plug
(1).
2. Install the nipple and hose
➀
of pressure test kit
A and connect the hose to pressure test kit A .
3. Start the engine and measure the intake air pres-
sure (boost pressure) when the engine is running
at rated horsepower.
★
When measuring with the engine mounted
on the machine, measure according to the
conditions given in the shop manual for the
machine.
4. After completing the measurement, remove the
measurement equipment and set to the original
condition.
MEASURING EXHAUST
TEMPERATURE
(OVERALL ENGINE)
Wait for the exhaust manifold temperature to go
down before removing or installing the measur-
ing equipment.
1. Remove exhaust temperature measurement
plug (1).
★
Since the exhaust manifolds of cylinders No.
1 – 3 and those of cylinders No. 4 – 6 are
independent from each other, measure the
exhaust temperature at both plugs.
2. Fit the sensor
➀
of digital temperature gauge C ,
then connect to the digital temperature gauge B .
3. Start the engine and measure the intake air pres-
sure (boost pressure) when the engine is running
at rated horsepower.
★
When measuring with the engine mounted
on the machine, measure according to the
conditions given in the shop manual for the
machine.
4. After completing the measurement, remove the
measurement equipment and set to the original
condition.
➃
MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE),
MEASURING EXHAUST TEMPERATURE (OVERALL ENGINE)
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