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Komatsu PC138US - Maintenance Information; Stop Engine before Carrying out Maintenance

Komatsu PC138US
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SAFETY
SAFETY MAINTENANCE INFORMATION
STOP ENGINE BEFORE CARRYING OUT MAINTENANCE
Stop the machine on firm, level ground.
Select a place where there is no hazard of falling rocks or
landslides, or of flooding if the land is low.
Lower the work equipment completely to the ground and stop
the engine.
Turn the starting switch to the ON position. Operate the work
equipment control lever back and forth, left and right at the full
stroke 2 to 3 times to eliminate the remaining internal pressure
in the hydraulic circuit, and then push up lock lever (1) to the
LOCK position (L).
Check that the battery relay is off and main power is not
conducted. (Wait for approx. one minute after turning off the
engine starting switch key and press the horn switch. If the horn
does not sound, it is not activated.)
Put blocks under the track to prevent the machine from moving.
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