Komatsu PC138USLC-11 Shop Manual Download

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• Always wear the protective eyeglasses when hitting parts

with a hammer.

• Always wear the protective eyeglasses when grinding

parts with a grinder, etc.

• When performing any operation with multiple workers, al-

ways agree on the operating procedure before starting. Be
clear in verbal communication, and observe hand signals.
Hang "UNDER REPAIR" warning tag in the operator's
compartment Before starting work.

• Work and operation which require license or qualification

should be performed by qualified workers.

• Welding repairs should be performed by trained and experienced welders. When performing welding work,

always wear welding gloves, apron, welding goggles, cap and other clothes suited for welding work.

• Warm up before starting the work with exercise which increases alertness and the range of motion in order

to prevent injury.

• Avoid prolonged work, and take a rest at times to keep up a good condition. Take a rest at designated safe

area.

Precautions for preparatory work

• Place the machine on a firm and level ground, and apply the parking brake and chock the wheels or tracks

to prevent the machine from moving before adding oil or making any repairs.

• Lower the work equipment (blade, ripper, bucket, etc.) to the ground before starting work. If this is not pos-

sible, insert the lock pin or use blocks to prevent the work equipment from falling. In addition, be sure to
lock all the control levers and hang "UNDER REPAIR" warning tag on them.

• When performing the disassembling or assembling work, support the machine securely with blocks, jacks,

or stands before starting the work.

• Remove all mud and oil from the steps or other places for

going up and down on the machine. Always use the hand-
rails, ladders or steps when for going up and down on the
machine. Never jump on or off the machine. When the
scaffold is not provided, use steps or stepladder to secure
your footing. Do not use handrails, ladders, or steps if they
are damaged or deformed. Repair it or replace it immedi-
ately.

Precautions during work

• For the machine with the battery disconnect switch, check before starting the work that the system operat-

ing lamp is not lit. Then, turn the battery disconnect switch to OFF (○) position.

REMARK

Remove the key after it is turned to OFF (○) position if the battery disconnect switch is a switch key type.
For the machine without the battery disconnect switch, turn the starting switch to OFF position, wait for two
minutes or more before starting the work. Disconnect the battery cable by starting from the negative (-) ter-
minal first.

• For the machine with the quick release battery terminal (-), check before starting the work that the system

operating lamp is not lit. Then, disconnect the quick release battery terminal (-).

REMARK

For the machine without the system operating lamp, turn the starting switch to OFF position, wait for two
minutes or more before starting the work. Disconnect the quick release battery terminal (-).

00 INDEX AND FOREWORD

SAFETY NOTICE FOR OPERATION

PC138USLC-11

00-27