Finding Top Center Position for No

FindingTopCenter Position For No. 1 Piston

1. Remove two bolts (1) and remove cover (2) from the flywheel housing (3) to open the turning hole.

2. Put one of the 6V5219 bolts (1) in the timing hole located approximately 127 to 152 mm (5 to 6 in) above the turning hole in the flywheel housing. Use the 9S9082 Engine Turning Tool and a 1/2 inch drive ratchet wrench to turn the engine flywheel in the direction of normal engine rotation (counterclockwise when viewed from the flywheel end) until the timing bolt engages with the threaded hole in the flywheel.

Cylinder And Valve Location

To make an adjustment to the valve lash, turn the adjustment screw in the rocker arm. Valve lash adjustments can be made by using the procedure that follows:

1. Put No. 1 piston at top center (TC) on the compression stroke. See the topic, Finding Top Center Position For No. 1 Piston.

2. Make an adjustment to the valve lash on the intake valves for cylinders 1, 2 and 4. Make an adjustment to the valve lash on the exhaust valves for cylinders 1, 3, and 5.

3. After each adjustment, tighten the nut for valve adjustment screw to a torque of 25 ± 7 N·m (18 ± 5 lb ft), and check the adjustment again.

4. Remove the timing bolt and turn the flywheel 360 degrees in the direction of engine rotation. This will put No. 6 piston at top center (TC) on the compression stroke. Install the timing bolt in the flywheel.

5. Make an adjustment to the valve lash on the intake valves for cylinders 3, 5, and 6. Make an adjustment to the valve lash on the exhaust valves for cylinders 2, 4, and 6.

6. After each adjustment, tighten the nut for valve adjustment screw to a torque of 25 ± 7 N·m (18 ± 5 lb ft), and check the adjustment again.

7. Remove the timing bolt from the flywheel when all adjustments to the valve lash have been made.

Unit Injector Adjustment

To make an adjustment to the unit injector, turn the adjusting screw in the rocker arm. Unit injector adjustment can be make by using the procedure that follows:

1. Put No. 1 piston at top center (TC) on the compression stroke. See the topic, Finding Top Center Position For No. 1 Piston.

2. Turn the unit injector adjusting screw (2) CW (clockwise) until contact is made with the unit injector.

3. Turn the adjusting screw CW (clockwise) an additional 180 degrees (1/2 turn).

4. Hold the adjusting screw in this position and tighten the locknut (3) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).

5. Make an adjustment to the unit injectors on cylinders 3, 5, and 6.

6. Remove the timing bolt and turn the flywheel 360 degrees in the direction of engine rotation (counterclockwise). This will put No. 1 piston at top center (TC) on the exhaust stroke.

7. Make an adjustment to the unit injectors on cylinders 1, 2, and 4.

8. Remove the timing bolt from the flywheel when all the unit injector adjustments have been made, and reinstall the timing cover.