Chrysler Sebring 2005 Service Manual page 1255

9 - 186 ENGINE 2.7L DOHC
INTAKE/EXHAUST VALVES & SEATS (Continued)
INSPECTION
VALVES
(1) Clean and inspect valves thoroughly. Replace
burned, warped and cracked valves.
(2) Measure valve stems for wear (Fig. 35). For
valve specifications, (Refer to 9 - ENGINE - SPECI-
FICATIONS).
NOTE: Valve stems are chrome plated and should
not be polished (Fig. 35).
Fig. 35 Intake and Exhaust Valves
1 - MARGIN
2 - FACE
3 - STEM
4 - VALVE SPRING RETAINER LOCK GROOVES
VALVE GUIDES
(1) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(2) Measure valve stem-to-guide clearance as fol-
lows:
(3) Install valve into cylinder head so it is 15 mm
(0.590 inch.) off the valve seat. A small piece of hose
may be used to hold valve in place.
(4) Attach dial indicator Tool C-3339 to cylinder
head and set it at right angle of valve stem being
measured (Fig. 36).
(5) Move valve to and from the indicator. For cler-
ance specifications, (Refer to 9 - ENGINE - SPECIFI-
CATIONS).
NOTE: Replace cylinder head if stem-to-guide clear-
ance exceeds specifications, or if guide is loose in
cylinder head.
INSTALLATION
(1) Coat valve stems with clean engine oil and
insert them in cylinder head.
(2) If valves or seats have been reground, check
valve tip height (A) (Fig. 37). If valve tip height for
Fig. 36 Measuring Valve Guide Wear - Typical
intake valve is greater than 47.59 mm (1.8737 in.) or
49.14 mm (1.9347 in.) for exhaust valve, grind valve
tip until within specifications. Make sure measure-
ment is taken from cylinder head surface to the top
of valve stem.
(3) Install valve spring. (Refer to 9 - ENGINE/
CYLINDER HEAD/VALVE SPRINGS - INSTALLA-
TION)
Fig. 37 Checking Valve Tip Height and Valve Spring
Installed Height
1 - SPRING RETAINER
2 - GARTER SPRING
3 - VALVE SPRING SEAT TOP
4 - CYLINDER HEAD SURFACE
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