14—ENGINE
CHRYSLER SERVICE MANUAL
CAUTION
With bolts removed, the cylinder heads are
held in position by two locating dowel pins only.
(FirePower Engines)
If rocker arm assemblies have been disas-
sembled for cleaning, inspection or replacement,
refer to Figures 11 and 12 for proper reassem-
bly.
NOTE: On FirePower engines rocker shafts
are stamped "IN" for intake and "EX" for ex-
haust. The intake rocker arms are shorter than
exhaust rocker arms.
8. INSTALLATION OF ROCKER ARM AND
SHAFT ASSEMBLY
Install push rods as shown in Figures 6 and 7.
The push rods should be properly positioned in
rocker arm and tappets.
CAUTION
Be sure locating dowels on brackets are in
proper alignment in head, as shown in Figure
11.
Position rocker arm assemblies. Install cyl-
inder head bolts. Tighten bolts 60-80 foot-
pounds torque in sequence shown in Figures
8 and 9. Then repeat the procedure, tightening
all head bolts to 85 foot-pounds torque.
9. REMOVAL OF VALVES AND VALVE
SPRINGS
With cylinder head removed, compress valve
springs with Tool C-3422 (SpitFire Engines
and Tool C-3024 (FirePower Engines). Re-
move valve retaining locks, valve spring re-
tainers, valve stem cup seals (intake valves
only) and valve springs. Remove burrs from
valve stem lock grooves to prevent damage to
valve guide when valves are removed.
10.
VALVE INSPECTION
Clean valves thoroughly, and discard burned,
warped or cracked valves. Check valve stems
for wear. Intake valve stems should measure
.372 to .373 inch, and exhaust valve stems
should measure .371 and .372 inch. If wear ex-
ceeds .002 inch, replace the valve. Remove car-
bon and varnish deposits from inside of valve
guides with cleaner, Tool C-756.
INTAKE VALVE
CHECKING SLEEVE
• EXHAUST VALVE
CHECKING SLEEVE
'5U33A
Fig.
13—Installing Sleeves to Check Guide Clearance
(FirePower) (Typical of SpitFire)
NOTE: On SpitFire Engines, the valve guides
are cast integrally with the cylinder head. Serv-
ice valves with oversize stems are available for
these engines.
Check valve stem to guide clearance as fol-
lows:
Install sleeve, Tool C-3025, over intake
valve stem, and sleeve Tool C-3026 on exhaust
valve stem and install valves (Fig. 13). These
special sleeves place valve at working height
for easy checking with a dial indicator. Attach
dial indicator Tool C-3339 to cylinder head and
set it at right angle to edge of valve being
checked (Fig. 14). Move valve to and from in-
dicator. The total dial indicator reading should
not exceed .008 inch on intake valves, or .014
inch on exhaust valves. If readings exceed the
above tolerances, install new valve guides
54x3288
Fig.
14—Checking Valve Guide Clearance (SpitFire)
(Typical of FirePower)
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