Static Check Of The Timing Gear Position
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| Illustration 1 | g00707096 |
Front gear group (1) Camshaft gear (2) Timing marks (3) Camshaft idler gear (4) Crankshaft gear (5) Idler gear (6) Oil pump gear | |
The basis for the correct fuel injection timing and the valve mechanism operation is determined by the alignment of the timing for the front gear group. Align timing marks (2) on camshaft idler gear (3) with the holes on camshaft gear (1) and crankshaft gear (4). This alignment is required in order to provide the correct relationship between the piston movement and the valve movement.
Crankshaft Positions for Valve Lash Setting
| Valve Lash Setting | |
| Valves | Dimension of Gauge |
| Inlet | 0.38 ± 0.08 mm (0.015 ± 0.003 inch) |
| Exhaust | 0.64 ± 0.08 mm (0.025 ± 0.003 inch) |
| Crankshaft Positions for Valve Lash Setting | |
| The rotation of the crankshaft is viewed from the flywheel end. | |
| Rotation | Counterclockwise |
| Check and Adjust with No. 1 Piston On this Stroke. (1) | Top Center Compression Stroke (2) |
| Injectors | 3-5-6 |
| Inlet Valves | 1-2-4 |
| Exhaust Valves | 1-3-5 |
| Check and Adjust with No. 1 Piston On this Stroke. | Top Center Exhaust Stroke |
| Injectors | 1-2-4 |
| Inlet Valves | 3-5-6 |
| Exhaust Valves | 2-4-6 |
| Firing Order | 1-5-3-6-2-4 |
| ( 1 ) | Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for more information. |
| ( 2 ) | Put No. 1 Piston at the top center position. After the top center position is found and the adjustments have been made for the correct cylinders, remove the top center bolt. Turn the flywheel in a counterclockwise direction by 360 degrees. This puts No. 1 Piston at the top center position on the other stroke. Install the top center bolt in the flywheel and complete the adjustments for the cylinders that remain. |
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| Illustration 2 | g00821000 |
Cylinder and valve location (A) Exhaust valves (B) Inlet valves | |
Note: Check the crankshaft position with the No. 1 piston at the top center position. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for more information.
Note: Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust" for more information in order to adjust the valves.