Refer to the Lubrication and Maintenance Procedures for details of valve clearance adjustment.
CAT 3306 Valve Clearance Adjustment
1. Put No. 1 piston at top center (TC) on the compression stroke. Make reference to FINDING TOP CENTER COMPRESSION POSITION FOR NO. 1 PISTON.
2. Make an adjustment sequence to valve clearance on the intake valves for cylinders 1, 2, and 4. Make an adjustment to the valve clearance on the exhaust valves for cylinders 1, 3, and 5.
3. Turn the flywheel 360° in the direction of engine rotation. This will put No. 6 piston at top center (TC) on the compression stroke.
4. Make an adjustment sequence to the valve clearance on the intake valve for cylinder 3, 5, and 6. Make an adjustment to the valve clearance on the exhaust valves for cylinders 2, 4, and 6.
5. After valve adjustment is correct, tighten the nuts for the valve adjustment screws to 22 ± 3 lb. ft. (28 ± 4 N·m).
CAT 3304 Valve Clearance Adjustment
1. Put No. 1 piston at top center (TC) on the compression stroke. Make reference to FINDING TOP CENTER COMPRESSION POSITION FOR NO. 1 PISTON.
2. Make an adjustment to the valve clearance on the intake valves for cylinders 1 and 2. Make an adjustment to the valve clearance on the exhaust valves for cylinders 1 and 3.
3. Turn the flywheel 360° in the direction of engine rotation. This will put No. 6 piston at top center (TC) on the compression stroke.
4. Make an adjustment sequence to the valve clearance on the intake valves for cylinders 3 and 4. Make an adjustment to the valve clearance on the exhaust valves for cylinders 2 and 4.
5. After valve adjustment is correct, tighten the nuts for the valve adjustment screws to 22 ± 3 lb. ft. (28 ± 4 N·m).
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