B5.9G, B5.9LPG, B Gas Plus, B LPG Plus, and B Gas International Engines – 204-006   General Safety Instructions

Important Safety Notice

WARNING  Improper practices, carelessness, or ignoring the warnings can cause burns, cuts, mutilation, asphyxiation or other personal injury or death.

Read and understand all of the safety precautions and warnings before performing any repair. This list contains the general safety precautions that must be followed to provide personal safety. Special safety precautions are included in the procedures when they apply.

• Work in an area surrounding the product that is dry, well lit, ventilated, free from clutter, loose tools, parts, ignition sources and hazardous substances. Be aware of hazardous conditions that can exist.
• Always wear protective glasses and protective shoes when working.
• Rotating parts can cause cuts, mutilation or strangulation.
• Do not wear loose-fitting or torn clothing. Remove all jewelry when working.
• Disconnect the battery (negative [-] cable first) and discharge any capacitors before beginning any repair work. Disconnect the air starting motor if equipped to prevent accidental engine starting. Put a “Do Not Operate” tag in the operator’s compartment or on the controls.
• On Generator Set applications, switch off the generator set control panel and put a “Do Not Operate” tag on the control panel. All AC supplied to generator auxiliaries must be isolated. The generator set circuit breaker must be locked in the “Open” position. The manual “E-Stop” device must also be activated.
• Use ONLY the proper engine barring techniques for manually rotating the engine. Do not attempt to rotate the crankshaft by pulling or prying on the fan. This practice can cause serious personal injury, property damage, or damage to the fan blade(s) causing premature fan failure.
• If an engine has been operating and the coolant is hot, allow the engine to cool before slowly loosening the filler cap to relieve the pressure from the cooling system.
• Always use blocks or proper stands to support the product before performing any service work. Do not work on anything that is supported ONLY by lifting jacks or a hoist.
• Relieve all pressure in the air, oil, fuel, and cooling systems before any lines, fittings, or related items are removed or disconnected. Be alert for possible pressure when disconnecting any device from a system that utilizes pressure. Do not check for pressure leaks with your hand. High pressure oil or fuel can cause personal injury.
• To reduce the possibility of suffocation and frostbite, wear protective clothing and ONLY disconnect liquid refrigerant (Freon) lines in a well ventilated area. To protect the environment, liquid refrigerant systems must be properly emptied and filled using equipment that prevents the release of refrigerant gas (fluorocarbons) into the atmosphere. Federal law requires capturing and recycling refrigerant.
• To reduce the possibility of personal injury, use a hoist or get assistance when lifting components that weigh 23 kg [50 lb] or more. Make sure all lifting devices such as chains, hooks, or slings are in good condition and are of the correct capacity. Make sure hooks are positioned correctly. Always use a spreader bar when necessary. The lifting hooks must not be side-loaded.
• Corrosion inhibitor, a component of SCA and lubricating oil, contains alkali. Do not get the substance in eyes. Avoid prolonged or repeated contact with skin. Do not swallow internally. In case of contact, immediately wash skin with soap and water. In case of contact, immediately flood eyes with large amounts of water for a minimum of 15 minutes. IMMEDIATELY CALL A PHYSICIAN. KEEP OUT OF REACH OF CHILDREN.
• Naptha and Methyl Ethyl Ketone (MEK) are flammable materials and must be used with caution. Follow the manufacturer’s instructions to provide complete safety when using these materials. KEEP OUT OF REACH OF CHILDREN.
• To reduce the possibility of burns, be alert for hot parts on products that have just been turned off, exhaust gas flow, and hot fluids in lines, tubes, and compartments.
• Always use tools that are in good condition. Make sure you understand how to use the tools before performing any service work. Use ONLY genuine Cummins® or Cummins ReCon® replacement parts.
• Always use the same fastener part number (or equivalent) when replacing fasteners. Do not use a fastener of lesser quality if replacements are necessary.
• When necessary, the removal and replacement of any guard covering rotating components, drives, and/or belts should only be carried out by a trained technician. Before removing any guards the engine must be turned off and any starting mechanisms must be isolated. All fasteners must be replaced on re-fitting the guards.
• When necessary, the removal and replacement of any guards covering rotating components, drives and or belts should only be carried out be a trained technician. Before removing any guards the engine must be turned off and any starting mechanisms must be isolated. All fasteners must be replaced on re-fitting the guards.
• Do not perform any repair when fatigued or after consuming alcohol or drugs that can impair your functioning.
• Some state and federal agencies in the United States of America have determined that used engine oil can be carcinogenic and can cause reproductive toxicity. Avoid inhalation of vapors, ingestion, and prolonged contact with used engine oil.
• The Cummins® natural gas and liquefied petroleum gas engine ignition systems produce high voltage when the engine is operating. Do not touch any ignition wiring or components while the engine is operating unless you use suitably insulated tools. Failure to comply with this warning can cause serious shock.
• Do not connect the jumper starting or battery charging cables to any ignition or governor control wiring. This can cause electrical damage to the ignition or governor.
• The natural gas and liquefied petroleum gas exhaust system normally operates at a higher temperature than similar diesel exhaust systems. To reduce the possibility of burns, do not touch exhaust components. Do not route lines or hoses which can deteriorate from heat near the natural gas exhaust.
• Liquefied petroleum gas is heavier than air and can accumulate near the floor, in sumps, and low-lying areas.
• Natural gas is lighter than air and can accumulate under hood and awnings.
• Compressed natural gas and liquefied petroleum gas is normally treated with an odor producing chemical, so that users will be able to smell gas leaks. Always be alert for the smell of gas. If you enter a room or approach a vehicle and a smell of gas is present, immediately shut off all engines and ignition sources, avoid sparks, arcing switches and equipment, cigarettes, pilot lights, flames, and other sources of ignition in the area and in areas with common ventilation. Provide extra ventilation to the area and do not start the equipment or nearby equipment until the leak is corrected and the area is ventilated. Avoid leaving natural gas and liquefied petroleum gas fueled equipment in unvented rooms overnight or for extended periods. Store and service natural gas fueled equipment in large well ventilated areas or outside.Note: Liquid natural gas does not have an odor.
• To reduce the possibility of suffocation and frostbite, wear protective clothing and ONLY disconnect natural gas and liquefied petroleum gas lines in a well ventilated area.
• Do not troubleshoot or repair gas leaks while the engine is running.
• Always torque fasteners and fuel connections to the required specifications. Overtightening or undertightening can allow leakage. This is critical to the natural gas and liquefied petroleum gas fuel and air systems.
• Always test for fuel leaks as instructed, as odorant can fade.
• Close the manual fuel valves prior to performing maintenance and repairs, and when storing the vehicle inside.
• Coolant is toxic. If not reused, dispose of in accordance with local environmental regulations.
• California Proposition 65 Warning — Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
• Repair and maintenance tasks on some Generator Set systems, such as natural gas supply lines and high voltage electrical systems, can only be performed by suitably qualified, authorized and certified personnel. Ensure that you comply with all local and national legislation and regulations.