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REPAIR INSTRUCTIONS, PART 3
INLET VALVE ADJUSTMENT
Apply the parking brake before turning the
engine over. Remove the EECU fuse to avoid
starting the engine unintentionally. Make sure
that the transmission is not in gear.
1. Using the flywheel turning tool, 9996956,
turn the engine over manually to the
appropriate camshaft marking for
adjustment of the inlet valves and injector of
that cylinder.
2. Using a feeler gauge, check the clearance
between the rocker arm adjustment screw
and the valve yoke (bridge) of the inlet
valves (Figure 422). The inlet valve
clearance should be 0.2 mm (0.008 inch).
3. If the clearance is not within specification,
loosen the locknut and adjust the clearance
as required. Hold the adjustment screw to
prevent it from turning and tighten the
locknut according to specification.
422
Figure 422 — Checking Inlet Valve Clearance
UNIT INJECTOR ADJUSTMENT
The unit injector adjustment is done with the
engine and camshaft in the same position as for
the inlet valve adjustment on each cylinder.
1. Loosen the injector rocker arm adjusting
screw jam nut and turn the adjusting screw
to relieve the preload.
2. Turn the adjusting screw until it firmly
contacts the injector. Do not compress the
spring.
3. Turn the adjusting screw a further
240 degrees (four flats on the hex head).
4. Using a torque wrench while preventing the
adjusting screw from turning further, tighten
the jam nut according to specification.
423
Figure 423 — Adjusting Injectors
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