3306C Truck Engine Caterpillar

Illustration 1	g00316303
Engine Design (A) Exhaust valves. (B) Inlet valves.

Use the following procedure to adjust the valves:

1. Put the No. 1 piston to the top center position on the compression stroke.

   Note: See Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for further details.

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   Table 1

   Valve Lash Setting with Stopped Engine
   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)

2. Adjust the valve lash on the inlet valves for cylinders 1, 2, and 4.

3. Adjust the valve lash on the exhaust valves 1, 3, and 5.

4. Turn the flywheel by 360° in the direction of the engine rotation.

   This puts the No. 6 piston at the top center position on the compression stroke.

5. Adjust the valve lash on the intake valve for cylinders 3, 5, and 6.

6. Adjust the valve lash on the exhaust valve for cylinders 2, 4, and 6.

7. After each valve adjustment is correctly made, tighten the nuts for the valve adjustment screws to 28 ± 4 N·m (21 ± 3 lb ft).