3054, 3054B and 3056 Marine Engines Caterpillar

3054 Engine

Illustration 1	g00774292
Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Flywheel end of the engine (D) Front of the engine

Bore ... 100 mm (3.937 inch)

Stroke ... 127 mm (5.000 inch)

Displacement ... 4.0 L (244 in³)

Cylinder arrangement ... In-line

Type of combustion ... Direct injection

Compression ratio

Turbocharged engines ... 17.25:1

Number of cylinders ... 4

Valves per cylinder ... 2

Valve lash

Inlet valve ... 0.20 mm (0.008 inch)

Exhaust valve ... 0.45 mm (0.018 inch)

Firing order ... 1, 3, 4, 2

When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... Clockwise

When the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction: ... Clockwise

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

3054B Engine

Illustration 2	g00774292
Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Flywheel end of the engine (D) Front of the engine

Bore ... 103 mm (4.055 inch)

Stroke ... 127 mm (5.000 inch)

Displacement ... 4.2 L (258 in³)

Cylinder arrangement ... In-line

Type of combustion ... Direct injection

Compression ratio

Naturally aspirated engines ... 18.5:1

Number of cylinders ... 4

Valves per cylinder ... 2

Valve lash

Inlet valve ... 0.20 mm (0.008 inch)

Exhaust valve ... 0.45 mm (0.018 inch)

Firing order ... 1, 3, 4, 2

When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... Clockwise

When the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction: ... Clockwise

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

3056 Engine

Illustration 3	g00758352
Cylinder and valve location (A) Exhaust valves (B) Inlet valves (C) Flywheel end of the engine (D) Front of the engine

Bore ... 100 mm (3.937 inch)

Stroke ... 127 mm (5.000 inch)

Displacement ... 6.0 L (366 in³)

Cylinder arrangement ... In-line

Type of combustion ... Direct injection

Compression ratio

Naturally aspirated engines ... 16.5:1

Turbocharged engines ... 16:1

Number of cylinders ... 6

Valve per cylinder ... 2

Valve lash

Inlet valve ... 0.20 mm (0.008 inch)

Exhaust valve ... 0.45 mm (0.018 inch)

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

When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... Clockwise

When the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction: ... Clockwise

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