MAINTENANCE PROCEDURES
4006/8 Diesel, May 1998 43
EQUALISING ROCKER BRIDGES AND
SETTING VALVE CLEARANCES
NOTE: The bridge pieces must be set before
attempting to set the valve clearances.
Remove the 4 screws (1) from each rocker
cover (2), lift off the covers and peel off and
throw away the old gaskets Fig. 41.
To equalise the bridge pieces the
appropriate valves must be rocking, use the
table on page 44.
In order that the engine may be rotated while
the batteries are disconnected a special
cranking device (SE253) can be fitted to a
starter motor hole in the flywheel housing
see Fig. 42. The flywheel housing has an
inspection hole directly below the
turbocharger through which the flywheel
markings may be seen to line up with the
pointer set in the flywheel housing Fig. 43.
Using a socket and ratchet wrench press
against the spring loaded bolt head until the
pinion engages with the flywheel gear then
crank the engine to the desired position.
DISCONNECT
BATTERIES AND ALL
OTHER MEANS OF STARTING THE
ENGINE.
WARNING
Fig. 41
Fig. 42
Fig. 43
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