-------------PART 1 - ENGINE SYSTEMS------------
CYLINDER HEAD:
2. Clean the head and remove carbon deposits from
around the valve heads.
3. Using a valve spring compressor, Figure 6, remove
the retainer locks, spring retainers/rotators,
springs and seals from each valve, Figures 7 and 8.
4. Remove the valves and place in a numbered rack
together with the valve rotators (where fitted).
Figure 6
Valve Removal
1. Valve Spring 3. Valve Spring
Compressor 4. Cylinder Head
2. Retainer Locks
ROCKER SHAFT ASSEMBLY:
5. Remove the cylinder head bolts which pass
through the rocker shaft supports and slide the
rocker shaft components from the shaft, Figure 9.
INSPECTION AND REPAIR
CYLINDER HEAD:
4
1. Scrape all gasket surfaces clean then wash the
cylinder head in a suitable solvent and thoroughly
dry with a lint free cloth or compressed air.
Figure 7
Intake Valve Assembly Components
1. Intake Valve Spring 3. Intake Valve Seal
Retainer Lock 4. Intake Valve Spring
2. Intake Valve Spring 5. Intake Valve
Retainer
2. Inspect the cylinder head for damage and, if •
necessary, remove nicks and burrs from the
gasket faces using a suitable abrasive. Be sure all
traces of
abrasive material are removed after
repair.
3. Use a straight edge to check the flatness of the
cylinder head in all directions, Figure 10. For
flatness requirement see "Specifications,"
Chapter 3.
NOTE: If the cylinder head exceeds the flatness
specification it may be skimmed providing the
depth from the lower face of the valve insert to
the cylinder head face is not less than 0.117 in.
(2.97 mm).
4. After skimming the head, check whether any
cylinder head bolts are bottoming by mounting the
cylinder head on the block without a gasket and
without any of the pistons at T.D.C. Install all the
bolts finger tight and be sure the rocker shaft sup-
ports and flat washers are fitted with the long
bolts. If a 0.010 in. (0.25 mm) feeler gauge can
be inserted under the bolt head then the bolts are
bottoming and the cylinder block thread must be
increased in depth. Use a ½ in. x 13 UNC-2A
thread
tap.
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