Komatsu Galeo PC800-8, Shop Manual

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PC800, 850-8
7
30 Testing and adjusting
SEN00786-02
Measuring exhaust gas
temperature
a
Measuring instrument of exhaust gas temperature
k
Wait for the temperature of the exhaust manifold
to go down before removing or installing the
measuring equipment.
a
Measure the exhaust temperature under the fol-
lowing conditions.
•
Coolant temperature: Within operating range
• Hydraulic oil temperature: 45 – 55°C
1. Open the engine compartment cover on the
counterweight side.
2. Remove exhaust temperature pickup plug (2).
a
You may remove either of 2 plugs.
3. Install sensor [1] of digital thermometer B and
connect them to meter [2].
a
Clamp the wiring harness of the digital tem-
perature gauge so that it does not touch any
high temperature part during the measure-
ment.
4. Procedure for measuring maximum exhaust
temperature for troubleshooting
Operate the machine actually and measure the
maximum exhaust temperature.
a
Set the digital thermometer in the PEAK
mode.
5. Procedure for measuring exhaust temperature
periodically for preventive maintenance (Pm
Clinic), etc.
1) Set the working mode switch in the P-mode
position and turn the heavy lift switch ON.
2) Run the engine at high idle, relieve the
boom circuit by raising the boom, and meas-
ure the exhaust temperature.
a
Measure the exhaust temperature after
it is stabilized.
6. After completing the measurement, remove the
measuring equipment and set to the original
condition.
Symbol Part No. Part Name
B 799-101-1502 Digital thermometer