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Foreword, safety and general information
Important safety notice
• Appropriate servicing and repair are extremely important to ensure safe operation of the machine. The
shop manual describes the effective and safe servicing and repair methods recommended by Komatsu.
Some of these methods require the use of the special tools designed by Komatsu for the specific purpose.
• The symbol mark k is used for such matters that require special cautions during the work. The work
indicated by the caution mark should be performed according to the instructions with special attention to
the cautions. Should hazardous situation occur or be anticipated during such work, be sure to keep safe
first and take every necessary measure.
Safety points
• Good arrangement
• Correct work clothes
• Observance of work standard
• Practice of making and checking signals
• Prohibition of operation and handling by
unlicensed workers
• Safety check before starting work
• Wearing protective goggles (for cleaning or
grinding work)
• Wearing shielding goggles and protectors (for
welding work)
• Good physical condition and preparation
• Precautions against work which you are not
used to or you are used to too much
General precautions
Inappropriate handling causes an extreme
k
k
danger. Read and understand what is
described in the operation and maintenance
manual before operating the machine. Read
and understand what is described in this
manual before starting the work.
• Before performing any greasing or repairs, read
all the safety labels stuck to the machine. For
the locations of the safety labels and detailed
explanation of precautions, see the operation
and maintenance manual.
• Locate a place in the repair workshop to keep
the tools and removed parts. Always keep the
tools and parts in their correct places. Always
keep the work area clean and make sure that
there is no dirt, water or oil on the floor. Smoke
only in the areas provided for smoking. Never
smoke while working.
• When performing any work, always wear the
safety shoes and helmet. Do not wear loose
work cloths, or clothes with buttons missing.
1. Always wear the protective eyeglasses when
hitting parts with a hammer.
2. Always wear the protective eyeglasses when
grinding parts with a grinder, etc.
• When performing any work with 2 or more
workers, always agree on the working procedure
WA320-7
(ALL-1120-012-A-01-A)
• Only qualified workers must perform the work
• Keep the tools in good condition. And learn the
• If welding repairs is required, always have a
• Before starting work, warm up your body
• Avoid continuing work for long hours and take
Preparation
• Before adding oil or making any repairs, place
• Before starting work, lower the work equipment
• When performing the disassembling or
• Remove all of mud and oil from the steps or
00 Index and foreword
Foreword, safety and general information
(ALL-0370-001-A-00-A)
before starting. While working, always keep
conversations of the work between your fellow
workers and your self on any step of the work.
During the work, hang the warning tag of
"UNDER WORKING" in the operator's
compartment.
and operation which require license or
qualification.
correct way to use the tools, and use the proper
ones among them. Before starting the work,
thoroughly check the tools, lift truck, service
vehicle, etc.
trained and experienced welder with good
knowledge of welding perform the work. When
performing welding work, always wear welding
gloves, apron, shielding goggles, cap, etc.
thoroughly to start work under good condition.
rests with proper intervals to keep your body in
good condition. Take a rest in a specified safe
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.
(blade, ripper, bucket, etc.) to the ground. If it is
not possible to lower the equipment to the
ground, insert the lock pin or use blocks to
prevent the work equipment from falling. And be
sure to lock all the work equipment control levers
and hang a warning tag on them.
assembling work, support the machine securely
with blocks, jacks, or stands before starting the
work.
other places used to get on and off the machine
completely. Always use the handrails, ladders of
steps when getting on or off the machine. Never
(Rev. 2014/08)
00-17
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