GEAR 9G4309 - Caterpillar

Type 1 Engines and 9RM Engines
Illustration 1 g00296342
Cylinder and valve location for Type 1 engines and 9RM engines (A) Exhaust valves (B) Inlet valvesNote: Type 1 engines can be identified in two ways. The first method refers to Illustration 1. When the valve cover is removed, look at the cylinder head valves. Type 1 engines have two exhaust valves in a row and two inlet valves that are in a row.The second method does not require the removal of the valve cover. Refer to the inlet manifold and the exhaust manifold. Type 1 engines have two exhaust ports in a row and two inlet ports that are in a row.Type ... Four cylinder and four strokeCombustion system ... Direct injectionNominal Bore ... 100 mm (3.937 inch)Stroke ... 127 mm (5.00 inch)Capacity ... 4 liters (243 in3)Compression Ratio ... 16:1Number of cylinders ... 4Arrangement of cylinders ... in-lineFiring Order ... 1, 3, 4, 2 Valve Lash Inlet valve ... 0.20 mm (.008 inch) Exhaust valve ... 0.45 mm (.018 inch)When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... ClockwiseWhen the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction: ... ClockwiseNote: The front end of the engine is opposite the flywheel end. The left side and the right side of the engine are viewed from the flywheel end. The No. 1 cylinder is the front cylinder.Type 2 Engines and 7BJ Engines
Illustration 2 g00296424
Cylinder and valve location for Type 2 engines and 7BJ engines (A) Exhaust valves (B) Inlet valvesNote: Type 2 engines can be identified in two ways. The first method refers to Illustration 2. When the valve cover is removed, look at the cylinder head valves. Type 2 engines alternate the exhaust valves and the inlet valves.The second method does not require the removal of the valve cover. Refer to the inlet manifold and the exhaust manifold. Type 2 engines alternate the exhaust ports and the inlet ports.Type ... Four cylinder and four strokeCombustion system ... Direct injectionNominal Bore ... 100 mm (3.937 inch)Stroke ... 127 mm (5.00 inch)Capacity ... 4 liters (243 in3)Compression Ratio ... 17.25:1Number of cylinders ... 4Arrangement of cylinders ... in-lineFiring Order ... 1, 3, 4, 2Valve Lash Inlet valve ... 0.20 mm (.008 inch) Exhaust valve ... 0.45 mm (.018 inch)When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction: ... ClockwiseWhen the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction: ... ClockwiseNote: The front end of the engine is opposite the flywheel end. The left side and the right side of the engine are viewed from the flywheel end. The No. 1 cylinder is the front cylinder.