SEN00599-00 00 Index and foreword (Rev. 2005/11) Foreword and general information Safety notice 1 Important safety notice Proper service and repair are extremely important for safe machine operation. The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose. To prevent injury to workers, the symbol k is used to mark safety precautions in this manual. The cautions accompanying these symbols should always be followed carefully.
If any dangerous situa- tion arises or may possibly arise, first consider safety, and take the necessary actions to deal with the situation. 1. General precautions 7) If welding repairs are needed, always have a trained and experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, shielding goggles, cap and other clothes suited for welding work. 8) Before starting work, warm up your body thoroughly to start work under good condi- tion. k Mistakes in operation are extremely dangerous. Read the Operation and Maintenance Manual carefully before operating the machine.
1) Before carrying out any greasing or repairs, read all the safety plates stuck to the machine. For the locations of the safety plates and detailed explanation of precautions, see the Operation and Main- tenance Manual. 2) Decide a place in the repair workshop to keep 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. 3) When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing.
Safety points q Always wear safety glasses when hit- ting parts with a hammer. q Always wear safety glasses when grinding parts with a grinder, etc. 4) When carrying out any operation with 2 or more workers, always agree on the oper- ating procedure before starting. Always inform your fellow workers before starting any step of the operation. Before starting work, hang UNDER REPAIR signs in the operator's compartment. 5) Only qualified workers must carry out work and operation which require license or qualification. 6) Keep all tools in good condition, learn the correct way to use them, and use the proper ones of them.
Before starting work, thoroughly check the tools, machine, fork- lift, service car, etc. 2. Preparations for work 1) Before adding oil or making any repairs, park the machine on hard and level ground, and apply the parking brake and block the wheels or tracks to prevent the machine from moving. 2) Before starting work, lower the work equipment (blade, ripper, bucket, etc.) to the ground. If this is not possible, 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 warning signs on them.
2 D155AX-6 1 Good arrangement 2 Correct work clothes 3 Following work standard 4 Making and checking signs 5 Prohibition of operation and handling by unlicensed workers 6 Safety check before starting work 7 Wearing protective goggles (for cleaning or grinding work) 8 Wearing shielding goggles and protectors (for welding work) 9 Good physical condition and preparation 10 Precautions against work which you are not used to or you are used to too much