Related Manuals for Yanmar 6LY3-STP
Summary of Contents for Yanmar 6LY3-STP
- Page 1 M2215-04E150 6LY3-ETP/-STP/-UTP 6LY3-ETP/-STP/-UTP...
- Page 2 Publication No. M2215-04E150 History of Revision Manual Name Service Manual for Marine Diesel Engine Engine Model: 6LY3-ETP/-STP/-UTP Number Date of Reason for Correction item Corrected Outline of correction revision correction No (page) revision New edition: November 2005 Printed in Japan M2215-04E150...
- Page 3 Use this manual as a handy reference in daily inspection and maintenance, and as a text for engineering guidance. ©2005 YANMAR CO., LTD All rights reserved. This manual may not be reproduced or copied, in whole or in part, without the written permission of YANMAR CO., LTD.
- Page 4 CONTENTS 1. General ..........................1 1.1 Exterior views ......................1 1.2 Main specifications ...................... 2 1.3 Fuel oil, lubricating oil and cooling water ..............3 1.3.1 Fuel oil........................3 1.3.2 Lubricating oil ......................5 1.3.3 Cooling water ......................7 1.4 Engine outline ......................8 1.5 Piping diagrams ......................
- Page 5 3. Troubleshooting ......................54 3.1 Preparation before troubleshooting ................54 3.2 Quick reference chart for troubleshooting ..............55 3.3 Trouble code ......................64 4. Disassembly and reassembly ..................65 4.1 Disassembly and reassembly precautions ..............65 4.2 Disassembly and reassembly tools ................66 4.2.1 General hand tools ....................
- Page 6 5.4 Connecting rod ......................127 5.4.1 Inspecting the connection rod ................127 5.4.2 Crank pin metal ....................129 5.4.3 Piston pin bushing ..................... 131 5.4.4 Assembling piston and connecting rod.............. 132 5.5 Crankshaft and main bearing .................. 133 5.5.1 Crankshaft ......................133 5.5.2 Main bearing......................
- Page 7 6.4.2 Fuel filter inspection ..................167 7. Intake and exhaust system ..................168 7.1 Intake system ......................168 7.2 Exhaust system ....................... 168 7.2.1 Mixing elbow inspection ..................168 8. Lubrication system ....................... 169 8.1 Lubrication system ....................169 8.2 Lube oil pump ......................170 8.2.1 Lube oil pump construction ................
- Page 8 9.4.3 Disassembly and reassembly................186 9.4.4 Heat exchanger inspection................187 9.5 Pressure cap and coolant recovery tank ..............188 9.5.1 Pressure cap construction................. 188 9.5.2 Pressure cap pressure control ................188 9.5.3 Pressure cap inspection ..................189 9.5.4 Function of the coolant recovery tank ............... 189 9.5.5 Specifications of coolant recovery tank .............
- Page 9 10.4.2 Check before disassembly ................212 10.4.3 Disassembly ....................213 10.5 Cleaning and checking procedure ................ 215 10.5.1 Cleaning ......................215 10.5.2 Checking procedure ..................217 10.6 Reassembling procedure ..................220 10.6.1 Preparations for reassembly ................220 10.6.2 Reassembling procedure ................220 10.7 Handling after reassembly ...................
- Page 10 13.3.2 Characteristics....................239 13.3.3 Structure......................240 13.3.4 Wiring diameter of a starting motor ..............242 13.4 Alternator standard, 12V/80A ................243 13.4.1 Specifications ....................243 13.4.2 Structure......................244 13.4.3 Wiring diagram ....................245 13.4.4 Standard output characteristics............... 246 13.4.5 Inspection ......................247 13.5 Warning devices ....................
- Page 11 FOR SAFETY 1. SAFETY LABELS • 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.
- Page 12 2. Safety Precautions (1) SERVICE AREA • 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. • Safe / Adequate Work Area The service area should be clean, spacious, level and free from holes in the floor, to prevent "slip"...
- Page 13 (4) GENUINE PARTS and MATERIALS • Genuine Parts Always use genuine YANMAR parts or YANMAR recommended parts and goods. Damage to the engine, shortened engine life and or personal injury may result.
- Page 14 (5) FASTENER TORQUE • Torquing Fasteners Always follow the torque values and procedures as designated in the service manual. Incorrect values, procedures and or tools may cause damage to the engine and or personal injury. (6) Electrical • Short Circuits Always disconnect the (-) Negative battery cable before working on the electrical system.
- Page 15 (8) FURTHER PRECAUTIONS • Fueling / Refueling Keep sparks, open flames or any other form of ignition (match, cigarette, etc.) away when fueling/refueling the unit. Fire and or an explosion may result. • Hot Surfaces. Do NOT touch the engine (or any of its components) during running or shortly after shutting it down.
- Page 16 Warning Labels To insure safe operation, warning device labels have been attached. Their location is shown below and they should always be visible. Please replace if damaged or lost. DO NOT STEP ON COVERS. POSSIBILITY OF A FALL 003025-02E Warning Labels Part Code No.
- Page 17 3. Precautions for Service Work (1) Precautions for Safety Read the safety precautions given at the beginning of this manual carefully and always mind safety in work. (2) Preparation for Service Work Preparation is necessary for accurate, efficient service work. Check the customer ledger file for the history of the engine.
- Page 18 1. General 1. General 1.1 Exterior views 6LY3-ETP Operation side Filler cap Electrical control unit cover Turbocharger Air silencer Fuel injection pump Lube oil cooler Flywheel Intercooler Lube oil filter 003045-01E Non operation side Fresh water pump Coolant tank (Exhaust manifold) Fuel filter Dip stick Fresh water cooler...
- Page 19 1. General 1.2 Main specifications STP: 295kW(400hp)/3198min , UTP: 254kW(345hp)/3198min Engine model Unit 6LY3-ETP 6LY3-STP 6LY3-UTP Marine gear model Pleasure use Type Vertical water cooled 4 cycle diesel engine Combustion system Direct injection Number of cylinders Bore x stroke mm (inch) 105.9 x 110 (4.17 x 4.33)
- Page 20 1. General 1.3 Fuel oil, lubricating oil and cooling water 1.3.1 Fuel oil IMPORTANT: Only use the recommended fuel to obtain the best engine performance and to keep the durability of the engine, also to comply with the emission regulations. (1) Selection of fuel oil Diesel fuel oil should comply with the following specifications.