INTRODUCTION Maintenance of air cleaner or pre-cleaner The major cause of abnormal wear on engine parts is dust entering with intake air. Worn parts produce many problems such as an increase of oil consumption, de- crease of output, and starting difficulties. For effective removal of dust from intake air, conduct maintenance of the air cleaner according to the following instruc- tions. Do not conduct maintenance of the air cleaner/pre- cleaner while the engine is operating. Engine opera- tion without the air cleaner/precleaner in place allows foreign matters to enter the turbocharger, causing it to damage seriously.
Remove the air cleaner/pre-cleaner slowly to prevent dust accumulated on the element from falling off. After removing the air cleaner or pre-cleaner, imme- diately cover the opening (inlet port in case of air cleaner; port in body in case of pre-cleaner) with plastic sheet or similar means to prevent dust from entering the engine. Air cleaners equipped with a dust indicator will issue an alarm if the element gets clogged. Service the cleaner as soon as possible if an alarm is issued. Avoidance of prolonged time of starter oper- ation Do not operate the starter for more than 10 seconds at a time even if the engine does not start. Wait for at least 30 seconds before next engine cranking.
Continuous operation of the starter will drain the battery power and cause the starter to seize. Do not turn off battery switch during opera- tion If the battery switch is turned OFF when the engine is running, not only various meters will stop working but also the alternator may have its diode and transistor deteriorated. Cautionary instructions for transporting en- gine When transporting the engine on a truck, consider the engine weight, width and height to ensure safety. Abide by road traffic law, road vehicles act, vehicle restriction ordinance and other pertinent laws.
Avoid continuous engine operation in a low load condition Do not operate the engine continuously for more than 10 minutes at a load of less than 30%. Engine opera- tion in a low load condition increases the emission of unburned fuel. Therefore, a prolonged time of engine operation in a low load condition increases the quantity of unburned fuel adhering to engine parts, provoking the possibility of engine malfunctioning and shortening the service life of the engine. Observe safety rules at work site Observe the safety rules established at your workplace when operating and maintaining the engine. Do not operate the engine if you are feeling ill.
Operation of the engine with reduced awareness may cause improper operation that could result in accidents. In such a case, inform your supervisor of your condi- tion. When working in a team of two or more people, use specified hand signals to communicate among work- ers. Ventilation of engine room Always keep the engine room well ventilated. Insuffi- cient amount of intake air causes the operating temper- ature to rise, resulting in poor output and lowered performance. It is highly recommended to calculate the required amount of air supply to the engine and install an ade- quate ventilation system before installing the engine.
Work clothing and protective gear Wear a hardhat, face shield, safety shoes, dust mask, gloves and other protective gear as needed. When handling compressed air, wear safety goggles, hardhat, gloves and other necessary protective gear. Works without wearing proper protective gear could re- sult in serious injuries. Avoid contact with high-pressured fuel Should fuel leak from a fuel injection pipe, do not touch the spouting fuel directly. Fuel in the fuel injection pipes is under high pressure. If high-pressured fuel contacts you skin, it penetrates through the skin and may result in gangrene.
Use of tools optimum for each work Always keep in mind to select most appropriate tools for the work to be performed and use them correctly. If tools are damaged, replace with new tools. IX