Mitsubishi S12A2 User Manual

7-1
Chapter 7 ASSEMBLY OF BASIC ENGINE
1. Crankshaft and Main Bearing - Install ...................................................................7-3
1.1 Crankcase - Turn Over (Upend) ............................................................................................... 7-3
1.2 Piston Cooling Nozzle - Install..................................................................................................7-3
1.3 Upper Main Bearing - Install ..................................................................................................... 7-4
1.4 Crankshaft - Install.................................................................................................................... 7-5
1.5 Upper thrust plates - Install....................................................................................................... 7-5
1.6 Lower Main Bearing Shell and Lower Thrust Plate - Install...................................................... 7-5
1.7 Main Bearing Cap - Install ........................................................................................................ 7-6
1.8 Crankshaft End Play - Measure................................................................................................7-7
1.9 Crankcase - Turn Over .............................................................................................................7-7
2. Cylinder Liner, Piston and Connecting Rod - Assemble .....................................7-8
2.1 Cylinder Liner Protrusion - Measure......................................................................................... 7-8
2.2 Cylinder Liner Flange Protrusion - Calculate (When Cylinder Liner Not Installed)................... 7-8
2.3 Cylinder Liner - Install............................................................................................................. 7-10
2.4 Cylinder Liner Flange Protrusion - Measure (When Cylinder Liner Installed)......................... 7-10
2.5 Cylinder Liner Inside Diameter - Measure .............................................................................. 7-11
2.6 Piston and Connecting Rod - Assemble................................................................................. 7-11
2.7 Piston Ring - Install................................................................................................................. 7-12
2.8 Crankshaft - Turn.................................................................................................................... 7-12
2.9 Piston Installation - Prepare.................................................................................................... 7-13
2.10 Upper Connecting Rod Bearing - Install ................................................................................. 7-13
2.11 Piston - Install ......................................................................................................................... 7-14
2.12 Connecting Rod Cap - Install.................................................................................................. 7-16
2.13 Connecting Rod End Play - Measure ..................................................................................... 7-17
2.14 Piston Protrusion - Measure ................................................................................................... 7-17
3. Front Mechanism - Assemble...............................................................................7-18
3.1 Front Cover - Install ................................................................................................................ 7-18
3.2 Front Oil Seal - Install............................................................................................................. 7-18
3.3 Crankshaft Pulley, Damper and Front Pulley - Install............................................................. 7-19
3.4 Damper Face and Radial Runout - Measure.......................................................................... 7-19
3.5 Pointer - Install and Adjust...................................................................................................... 7-19
4. Rear Mechanism - Assemble................................................................................7-20
4.1 Rear Plate - Install .................................................................................................................. 7-20
4.2 Idler Shaft - Install................................................................................................................... 7-20
4.3 Camshaft - Install.................................................................................................................... 7-21
4.4 Camshaft Gear - Install........................................................................................................... 7-21
4.5 Camshaft End Play - Measure................................................................................................ 7-21
4.6 Governor Drive and Fuel Injection Pump Accessory Drive - Install........................................ 7-22
4.7 Fuel injection pump gear - Install............................................................................................ 7-22
4.8 Idler Gear - Install ................................................................................................................... 7-23
4.9 Idler Gear End Play - Measure ............................................................................................... 7-23
4.10 Timing Gear Backlash - Measure ........................................................................................... 7-24
4.11 Timing Gear Case - Install...................................................................................................... 7-24
4.12 Rear Oil Seal - Install.............................................................................................................. 7-25
4.13 Flywheel - Install..................................................................................................................... 7-25
4.14 Flywheel Face and Radial Runout - Measure......................................................................... 7-25
4.15 Pickup - Install ........................................................................................................................ 7-26

Mitsubishi S12A2 Specifications

General

Brand	Mitsubishi
Model	S12A2
Category	Engine
Language	English