Service Manual

627333-A 2-13
Engine Maintenance
c. Place the appropriate feeler gauge between
rocker arm and the valve bridge. Then, turn the
adjustemnt screw in a clockwise direction.
Slide the feeler gauge between the rocker arm
and the valve bridge. Continue turning the
adjustment screw until a slight drag is felt on
the feeler gauge. Remove the feeler gauge;
d. Tighten the adjustment locknut to a torque of
30 ± 7 Nm (22 ± 5 lb ft). Do not allow the
adjustment screw to turn while you are
tightening the adjustment. Recheck the valve
lash after tightening the adjustment locknut.
3. Remove the timing bolt and turn the flywheel by
360° in the direction of engine rotation. This will put
the No. 6 piston at the top center position on the
compression stroke. Install the timing bolt in the
flywheel;
4. Adjust the valve lash according to table above;
a. Lightly tap the rocker arm with a soft mallet.
This will ensure that the lifter roller seats
against the camshaft’s base circle;
b. Loosen the adjustment locknut;
c. Place the appropriate feeler gauge between
rocker arm and the valve bridge. Then, turn the
adjustment screw in a clockwise direction.
Slide the feeler gauge between the rocker arm
and the valve bridge. Continue turning the
adjustment screw until a slight drag is felt on
the feeler gauge. Remove the feeler gauge;
d. Tighten the adjustment locknut to a torque of
30 ± 7 Nm (22 ± 5 lb ft). Do not allow the
adjustment screw to turn while you are
tightening the adjustment locknut. Recheck the
valve lash after tightening the adjustment
locknut.
5. Remove the timing bolt from the flywheel after all
adjustment to the valve lash has been made.
Reinstall the timing cover.
NOTE: The valve lash must be adjusted before
adjusting the compression brake, if equipped.
TC Exhaust Stroke Inlet Valves Exhaust Valves
Valve Lash 0,38 ± 0,08 mm
(0,015 ± 0,003 inch)
0,64 ± 0,08 mm
(0,025 ± 0,003 inch)
Cylinders 3-5-6 2-4-6