Komatsu PC88MR-10 Shop Manual page 40

00 Index and foreword
Foreword, safety and general information
temperature even for a short period of time.
(Place it on a suitable dry stand.)
Precautions when performing arc welding
When performing arc welding on the machine
body, disconnect
connectors connected to the controller. Put the
arc welding ground to the place close to the
welding point.
Precautions for troubleshooting electrical
circuits
Be sure to turn the starting switch to "OFF"
position before disconnecting or connecting the
connectors.
Before performing troubleshooting, check all the
related connectors for loose connection.
a Check the related connectors for their
performance by disconnecting and
connecting them several times.
Be sure to connect all the disconnected
connectors before proceeding to the next step.
a If the starting switch is turned to "ON"
position with the connectors disconnected,
the failure which is not related to the part
which is actually failed.
When performing the troubleshooting for the
circuit (measurement of voltage, resistance,
continuity, current, etc.), shake the related wiring
harnesses and connectors several times and
check that the multimeter reading does not
change.
a If there is any value change on the
multimeter, there may be a defective contact
in the circuit.
00-38
all the wiring harness
PC88MR-10