The cylinder head assembly has one inlet valve and one exhaust valve for each cylinder. Each cylinder valve has a single valve spring.
The pistons have two compression rings and an oil control ring. It is important to ensure the correct piston height so that the piston does not contact the cylinder head. The correct piston height also ensures efficient combustion of fuel that is necessary in order to conform to requirements for emissions.
The crankshaft for a three cylinder engine has four main bearing journals. The crankshaft for a four cylinder engine has five main bearing journals. End play is controlled by the thrust washers that are located on the rear main bearing.
The timing gears are stamped with timing marks in order to ensure the correct assembly of the gears. When the No. 1 piston is at top center compression stroke, the teeth that are stamped on the crankshaft gear and the camshaft gear will be in alignment with the idler gear.
The crankshaft gear turns the idler gear which then turns the camshaft gear and the gear for the engine oil pump.
The Bosch fuel injection pump is mounted in the cylinder block. The fuel injection pump is operated by lobes on the camshaft. The fuel transfer pump is located on the right hand side of the cylinder block. The fuel transfer pump is also operated by lobes on the camshaft.
The fuel injection pump conforms to requirements for emissions. Adjustments to the fuel injection pump timing and high idle should only be made by trained personnel. The fuel injection pumps have mechanical governors that control the engine rpm.
A gerotor oil pump is located in the center of the idler gear. The engine oil pump sends lubricating oil to the main oil gallery through a pressure relief valve and an engine oil filter. The rocker arms receive pressurized oil through an externally located oil line that runs from the main oil gallery to the cylinder head.
Coolant from the bottom of the radiator passes through the belt driven centrifugal water pump. The coolant is cooled by the radiator and the temperature is regulated by a water temperature regulator.
Engine efficiency, efficiency of emission controls, and engine performance depend on adherence to proper operation and maintenance recommendations. Engine performance and efficiency also depend on the use of recommended fuels, lubrication oils, and coolants. Refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for more information on maintenance items.
Note: The front end of the engine is opposite the flywheel end of the engine. The left and the right side of the engine are determined from the flywheel end. The No. 1 cylinder is the front cylinder.
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| Illustration 1 | g00687593 |
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Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Cylinder number (D) Left side of the engine (E) Flywheel of the engine (F) Front of the engine (G) Right side of the engine | |
| 3003 Industrial Engine Specifications | |
| Maximum Operating Speed (rpm) | 3600 rpm |
| Cylinders and Arrangement | In-Line three cylinder |
| Bore | |
| Stroke | |
| Displacement | |
| Aspiration | NA(1) |
| Compression Ratio | 23:1 |
| Firing Order | 1-2-3 |
| Rotation (viewed from the flywheel) | Counterclockwise |
| Valve Lash Setting (Inlet) | |
| Valve Lash Setting (Exhaust) | |
| (1) | Naturally Aspirated |
|
| |
| Illustration 2 | g00687593 |
|
Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Cylinder number (D) Left side of the engine (E) Flywheel of the engine (F) Front of the engine (G) Right side of the engine | |
| 3013 Industrial Engine Specifications | |
| Maximum Operating Speed (rpm) | 2800 rpm |
| Cylinders and Arrangement | In-Line three cylinder |
| Bore | |
| Stroke | |
| Displacement | |
| Aspiration | NA(1) |
| Compression Ratio | 22.5:1 |
| Firing Order | 1-2-3 |
| Rotation that is viewed from the flywheel | Counterclockwise |
| Valve Lash Setting (Inlet) | |
| Valve Lash Setting (Exhaust) | |
| (1) | Naturally Aspirated |
| |
| Illustration 3 | g00687601 |
|
Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Cylinder number (D) Left side of the engine (E) Flywheel of the engine (F) Front of the engine (G) Right side of the engine | |
| 3014 Industrial Engine Specifications | |
| Maximum Operating Speed (rpm) | 2800 rpm |
| Cylinders and Arrangement | In-Line four cylinder |
| Bore | |
| Stroke | |
| Displacement | |
| Aspiration | NA(1) |
| Compression Ratio | 22:1 |
| Firing Order | 1-3-4-2 |
| Rotation that is viewed from the flywheel | Counterclockwise |
| Valve Lash Setting (Inlet) | |
| Valve Lash Setting (Exhaust) | |
| (1) | Naturally Aspirated |
|
| |
| Illustration 4 | g00687601 |
|
Cylinder and valve location (A) Exhaust valve (B) Inlet valve (C) Cylinder number (D) Left side of the engine (E) Flywheel of the engine (F) Front of the engine (G) Right side of the engine | |
| 3024 Industrial Engine Specifications | |
| Maximum Operating Speed (rpm) | 2800 rpm |
| Cylinders and Arrangement | In-Line four cylinder |
| Bore | |
| Stroke | |
| Displacement | |
| Aspiration | NA(1) |
| Compression Ratio | 19:1 |
| Firing Order | 1-3-4-2 |
| Rotation that is viewed from the flywheel | Counterclockwise |
| Valve Lash Setting (Inlet) | |
| Valve Lash Setting (Exhaust) | |
| (1) | Naturally Aspirated |