Compression - Test
An engine that runs roughly can have a leak at the valves. An engine that runs roughly can also have valves that need an adjustment. Remove the head and inspect the valves and valve seats. This is necessary in order to find defects that would not normally cause a problem. Repairs of these problems are normally done when you are reconditioning the engine.
The cylinder heads consist of three main components that can be removed:
- valve seat inserts
- valve guides
- bridge dowels
When any of these components are worn or when these components are damaged, these components can be removed. Refer to Disassembly and Assembly for the replacement of these components.
Caterpillar Information System:
3408C, 3412C and 3412D High Performance Marine Engines Engine Valve Lash - Inspect/Adjust
EMCP3 Electronic Control Module (Generator Set) - Replace
EMCP3 Speed Sensor (Engine) - Adjust
EMCP3 External Potential Transformer Connections
EMCP3 Typical Generator Abbreviations
EMCP3 Electrical Connector - Inspect
3408C, 3412C and 3412D High Performance Marine Engines Cooling System
EMCP3 Real Time Clock Programming
2003/11/01 New Seal for the Front Housing {1151}
2003/11/01 New Oil Pan and Integral Seal {1302, 1302, 1302}
3508, 3512, and 3516 Generator Sets Cooling System Coolant Sample (Level 2) - Obtain
3508, 3512, and 3516 Generator Sets Cooling System Coolant Sample (Level 1) - Obtain
3408C, 3412C and 3412D High Performance Marine Engines Exhaust Temperature - Test
3408C, 3412C and 3412D High Performance Marine Engines Turbocharger - Inspect
3408C, 3412C and 3412D High Performance Marine Engines Inlet Manifold Pressure - Test
3408C, 3412C and 3412D High Performance Marine Engines Air Inlet and Exhaust System - Inspect
3408C, 3412C and 3412D High Performance Marine Engines Finding Top Center Position for No. 1 Piston
3408C, 3412C and 3412D High Performance Marine Engines Governor - Adjust
3408C, 3412C and 3412D High Performance Marine Engines Engine Speed - Check
3408C, 3412C and 3412D High Performance Marine Engines Fuel Ratio Control - Adjust
3408C, 3412C and 3412D High Performance Marine Engines Fuel Setting - Adjust
3408C, 3412C and 3412D High Performance Marine Engines Automatic Timing Advance Unit - Test
2003/10/01 New Oil Pan and Integral Seal {1302, 1302, 1302}
C27 and C32 Industrial Engines Product Storage