Yanmar Engine Service Manual (EN)

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4TNV94L 4TNV98 4TNV98T 4TNV106 4TNV106T 3TNV82A 3TNV84(T) 4TNV84(T) 3TNV88 4TNV88

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PREFACE This manual describes the service procedures for the TNV series engines of indirect injection system that have been certified by the US EPA, California ARB and/or the 97/68/EC Directive for industrial use. Please use this manual for accurate, quick and safe servicing of the said engine. Since the explanation in this manual assumes the standard type engine, the specifications and components may partially be different from the engine installed on individual work equipment (power generator, pump, compressor, etc.). Please also refer to the service manual for each work equipment for details.

The specifications and components may be subject to change for improvement of the engine quality without notice. If any modification of the contents described herein becomes necessary, it will be notified in the form of correction information each time.

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SAFETY LABELS z Most accidents are caused by negligence of basic safety rules and precautions. For accident prevention, it is important to avoid such causes before development to accidents. Please read this manual carefully before starting repair or maintenance to fully understand safety precautions and appropriate inspection and maintenance procedures. Attempting at a repair or maintenance job without sufficient knowledge may cause an unexpected accident. z It is impossible to cover every possible danger in repair or maintenance in the manual. Sufficient consideration for safety is required in addition to the matters marked .

Especially for safety precautions in a repair or maintenance job not described in this manual, receive instructions from a knowledgeable leader. z Safety marks used in this manual and their meanings are as follows: DANGER -indicates an imminently hazardous situation, which, if not avoided, WILL result in death or serious injury. WARNING -indicates a potentially hazardous situation, which, if not avoided, COULD result in death or serious injury. CAUTION -indicates a potentially hazardous situation, which, if not avoided, MAY result in minor or moderate injury. z NOTICE - indicates that if not observed, the product performance or quality may not be guaranteed.

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Safety Precautions (1) SERVICE AREA z Sufficient Ventilation Inhalation of exhaust fumes and dust particles may be hazardous to ones health. Running engines welding, sanding, painting, and polishing tasks should be only done in well ventilated areas. z Safe / Adequate Work Area The service area should be clean, spacious, level and free from holes in the floor, to prevent “slip” or “trip and fall” type accidents. z Bright, Safely Illuminated Area The work area should be well lit or illuminated in a safe manner. For work in enclosed or dark areas, a “drop cord” should be utilized. The drop cord must have a wire cage to prevent bulb breakage and possible ignition of flammable substances.

z Safety Equipment Fire extinguisher(s), first aid kit and eye wash / shower station should be close at hand (or easily accessible) in case of an emergency.

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