Yanmar 2TNV70 Service Manual

Also see for 2TNV70: Service manual Operation manual Service manual

Contents

ENGINETNV IDI Service Manual 6-35Cylinder Block1 – Cylinder Block2 – Camshaft Bushing3 – Gear Case4 – Dowel (2 used)5 – O-Ring6 – Gear Case Cover7 – Front Crankshaft Seal8 – Fuel Injection Pump Gear Cover9 – Tappets10 – Camshaft11 – Camshaft Gear Key12 – Camshaft End Plate13 – Camshaft Gear14 – Idler Gear Shaft15 – Idler Gear Bushing16 – Idler Gear17 – Oil Pickup O-Ring18 – Oil Pickup19 – Crankshaft20 – Crankshaft Gear Key21 – Crankshaft Gear22 – Crankshaft Pulley23 – Main Bearing Inserts24 – Main Bearing Cap25 – Crankcase Extension26 – Oil Pan27 – Thrust Bearings28 – Flywheel29 – Connecting Rod Cap30 – Connecting Rod Bearing Inserts31 – Connecting Rod32 – Wrist Pin Bushing33 – Circlip34 – Wrist Pin35 – Piston36 – Oil Ring37 – Second Compression Ring38 – Top Compression Ring39 – Dowel (2 used)40 – Crankshaft Rear Seal41 – Flywheel HousingDisassembly of Cylinder BlockComponentsPrepare a clean, flat working surface on aworkbench large enough to accommodate theengine components. Discard all used gaskets,O-rings and seals. Use new gaskets, O-rings andseals for reassembly of engine.NOTICEIdentify all parts and their location using anappropriate method. It is important that all parts arereturned to the same position during thereassembly process.IMPORTANTMark all valve train components so they canbe installed in their original locations.Note: Record all measurements taken duringdisassembly.If the engine will be completely disassembled, thefollowing preliminary steps should be performed:1. Disconnect the battery cables at the battery.Always disconnect the negative (-) cable first.2. Remove the throttle cable, electricalconnections, intake and exhaust systemconnections, and fuel supply lines from theengine.3. Remove the alternator. See Removal ofAlternator on page 11-10.4. Drain the engine coolant from the radiator andcylinder block. See Drain, Flush and RefillCooling System with New Coolant onpage 5-21. Remove the cooling systemcomponents from the engine.NOTICEBe sure to secure the engine solidly to preventinjury or damage to parts due to the engine fallingduring work on the engine.