Yanmar 2TNV70 - Engine

TNV IDI Service Manual
6-1
TNV IDI Service Manual
Section 6
ENGINE
Page
Before You Begin Servicing ............................................................ 6-3
Introduction...................................................................................... 6-4
Cylinder Head Specifications .......................................................... 6-4
Adjustment Specifications ......................................................... 6-4
Cylinder Head............................................................................ 6-4
Intake / Exhaust Valve and Guide............................................. 6-5
Push Rod................................................................................... 6-5
Valve Spring.............................................................................. 6-5
Rocker Arm and Shaft............................................................... 6-6
Camshaft and Timing Gear Train Specifications............................. 6-6
Camshaft................................................................................... 6-6
Idler Gear Shaft and Bushing.................................................... 6-7
Timing Gear Backlash ............................................................... 6-7
Crankshaft and Pistons Specifications............................................ 6-7
Crankshaft................................................................................. 6-7
Crankshaft Reconditioning ........................................................ 6-8
Thrust Bearing........................................................................... 6-8
Piston......................................................................................... 6-9
Piston Ring.............................................................................. 6-10
Connecting Rod....................................................................... 6-11
Tappet ..................................................................................... 6-12
Cylinder Block Specifications ........................................................ 6-12
Cylinder Block.......................................................................... 6-12
Special Torque Chart .................................................................... 6-13
Torque for Bolts and Nuts........................................................ 6-13
Special Service Tools.................................................................... 6-14
Measuring Instruments.................................................................. 6-16
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