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00 Index and foreword
Important safety notice
Foreword, safety and general information
Important safety notice
Appropriate servicing and repair are extremely important to ensure safe operation of the machine.
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Theshop manual describes the effective and safe servicing and repair methods recommended by Komat-
su.
Some of these methods require the use of the special tools designed by Komatsu for the specific purpose.
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The symbol mark
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dicated 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.
General precautions
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Inappropriate handling causes an extreme
danger. Read and understand what is de-
scribed 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
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all the safety labels stuck to the machine. For the
locations of the safety labels and detailed expla-
nation of precautions, see the operation and
maintenance manual.
Locate a place in the repair workshop to keep
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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
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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 work-
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ers, always agree on the working procedure be-
fore 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 "UN-
DER WORKING" in the operator's compartment.
Only qualified workers must perform the work
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and operation which require license or qualifica-
tion.
Keep the tools in good condition. And learn the
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correct way to use the tools, and use the proper
ones among them. Before starting the work,
thoroughly check the tools, lift truck, service ve-
hicle, etc.
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is used for such matters that require special cautions during the work. The work in-
If welding repairs is required, always have a
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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.
Before starting work, warm up your body thor-
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oughly to start work under good condition.
Avoid continuing work for long hours and take
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rests with proper intervals to keep your body in
good condition. Take a rest in a specified safe
place.
Safety points
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Good arrangement
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Correct work clothes
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Observance of work standard
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Practice of making and checking signals
Prohibition of operation and handling by unli-
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censed workers
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Safety check before starting work
Wearing protective goggles (for cleaning or grind-
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ing work)
Wearing shielding goggles and protectors (for
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welding work)
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Good physical condition and preparation
Precautions against work which you are not used
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to or you are used to too much
Preparation
Before adding oil or making any repairs, place
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the machine on a firm and level ground, and ap-
ply the parking brake and chock the wheels or
tracks to prevent the machine from moving.
Before starting work, lower the work equipment
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(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 pre-
vent the work equipment from falling. And be
sure to lock all the work equipment control levers
and hang a warning tag on them.
When performing the disassembling or assem-
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bling work, support the machine securely with
blocks, jacks, or stands before starting the work.
(Rev. 2012/10)
WA200-7
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