D 350 Pickup L6-359 5.9L DSL (1989)
Valve Clearance: Adjustments
Locating TDC Using Timing Pin
Use the timing pin to locate Top Dead Center (TDC) for cylinder No.1. The timing pin is located at the back of the gear housing and below the injection
pump. Be sure to disengage the timing pin after locating top dead center.
Adjust the valves when the engine is cold, below 60°C (140°F).
Adjusting Valve Clearance
STEP 1
Adjust the clearance for the valves shown above. The valve lash adjustment is 0.254 mm (0.010 inch) for the intake valve. The valve lash
adjustment is 0.508 mm (0.020 inch) for the exhaust valve.
Tighten the valve adjusting nuts to 24 N-m (18 ft. lbs.) torque.
Be sure timing pin is disengaged before rotating the crankshaft. Mark the pulley and rotate the crankshaft 360°.
Adjusting Valve Clearance
STEP 2