Adjust the valves and N3 fuel injector settings as follows:
1. Disconnect starting power for engine.
2. Remove the engine valve rocker cover as outlined. Refer to section 1.6.2 for one-piece,
refer to section 1.6.3 for two-piece rocker cover, and refer to section 1.6.5for three-piece
rocker cover.
3. Insert a 3/4 in. drive breaker bar or ratchet into the square hole in the center of the
crankshaft pulley.
4. Bar the engine in the direction of rotation and observe a cylinder where the injector
rocker arm is just beginning to depress the injector plunger, both the intake and exhaust
valves should be closed.
[a]Stop turning the engine and mount a magnetic base dial indicator so you can monitor
the upward lift of travel of that injector lobe.
Set the pedestal of the dial indicator on the top of the injector cam roller. Adjust the
pedestal so it can travel the entire upward movement of the lobe.
Continue to slowly bar the engine over in the direction of rotation until the dial
indicator shows no more upward lift. The needle of the dial indicator will stop
moving indicating maximum lift.
[d]This is the point of maximum injector roller lift, the injector can now be set.
[e]If you rotate the engine beyond this point you will have to bar the engine over in the
opposite direction at least 1/4 turn and then bar the engine over in the direction of
rotation until maximum injector roller lift is obtained.
5. Stop engine rotation and note which cylinder this is, and follow the sequence
listed in Table 13-4 to correctly set injector and valves.
Max. injector lobe travel on
Cylinder No.
Adjust Injector on Cylinder No. Adjust Valves on Cylinder No.
6 6 2
2 2 4
4 4 1
1 1 5
5 5 3
3 3 6
Table 13-4 Valve Lash and N3 Injector Setting Adjustment Sequence
6. This injector can now be set using this procedure:
[a]Loosen the locknut on the adjusting screw at least two full turns.
Tighten the adjusting screw until the injector plunger bottoms out, torque value
should be 4.51 N·m (40 in·lbs).
Back the adjusting screw off 3/4 of a turn 0.75 mm ± 0.25 mm (0.03 in.± 0.01in.) and
tighten the locknut to 41-47 N·m (30-35 lb·ft).
[d]The injector is now adjusted.
