C-10 and C-12 Truck Engines Caterpillar

Illustration 1	g00386924
Cylinder And Valve Location (A) Exhaust valves and (B) Inlet valves

Bore ... 130.0 mm (5.12 inch)

Stroke ... 150.0 mm (5.91 inch)

Displacement ... 12 L (729 cu in)

Cylinder arrangement ... In-line

Valves per cylinder ... 4

In order to check the engine valve lash setting, the engine must be cold and the engine must be stopped. Engine valve lash settings

Inlet ... 0.38 mm (.015 inch)

Exhaust ... 0.64 mm (.025 inch)

Engine Compression Brake ... 1.14 ± 0.08 mm (.045 ± .003 inch)

Type of combustion ... Direct Injection

Firing Order ... 1 - 5 - 3 - 6 - 2 - 4

The crankshaft rotation is viewed from the flywheel end of the engine. Crankshaft rotation ... counterclockwise

Note: The front end of the engine is opposite of the flywheel end of the engine. The left side of the engine and the right side of the engine are viewed from the flywheel end of the engine. The No. 1 cylinder is the front cylinder.