Chrysler Sebring 2005 Service Manual page 1106

JR
VALVE SPRINGS AND SEALS (Continued)
Fig. 36 Valve Stem Oil Seal Tool
1 - VALVE SEAL TOOL
2 - VALVE STEM
CAUTION: When depressing the valve spring retain-
ers with valve spring compressor the locks can
become dislocated. Ensure both locks are in the
correct location after removing tool.
(4) Check the valve spring installed height B after
refacing the valve and seat (Fig. 37). Make sure mea-
surements are taken from top of spring seat to the
bottom surface of spring retainer. If height is greater
than 38.75 mm (1.525 in.), install a 0.762 mm (0.030
in.) spacer under the valve spring seat to bring
spring height back within specification.
Fig. 37 Checking Spring Installed Height and Valve
Tip Height Dimensions
1 - GARTER SPRING
2 - VALVE SPRING SEAT
3 - CYLINDER HEAD SURFACE
ENGINE BLOCK
DESCRIPTION
The cast iron cylinder block is a two-piece assem-
bly, consisting of the cylinder block and bed plate
(Fig. 38). The bed plate incorporates the main bear-
ing caps and bolts to the cylinder block. This design
offers a much stronger lower end and increased cyl-
inder block rigidity. The rear oil seal retainer is inte-
gral with the block. The bed plate and block are
serviced as an assembly.
Fig. 38 Cylinder Block and Bed plate
1 - CYLINDER BLOCK
2 - BED PLATE
STANDARD PROCEDURE
CYLINDER BORE HONING
(1) Used carefully, the cylinder bore resizing hone,
recommended tool C-823 or equivalent, equipped
with 220 grit stones, is the best tool for this honing
procedure. In addition to deglazing, it will reduce
taper and out-of-round as well as removing light
scuffing, scoring or scratches. Usually a few strokes
will clean up a bore and maintain the required lim-
its.
(2) Deglazing of the cylinder walls may be done
using a cylinder surfacing hone, recommended tool
C-3501 or equivalent, equipped with 280 grit stones,
if the cylinder bore is straight and round. 20–60
strokes depending on the bore condition, will be suf-
ficient to provide a satisfactory surface. Use a light
honing oil. D o n o t u s e e n g in e o r tra n s m is s io n o il,
m in e ra l s p irits o r k e ro s e n e . Inspect cylinder walls
after each 20 strokes.
(3) Honing should be done by moving the hone up
and down fast enough to get a cross-hatch pattern.
When hone marks in te rs e c t at 40-60 degrees, the
cross hatch angle is most satisfactory for proper seat-
ing of rings (Fig. 39).
(4) A controlled hone motor speed between
200–300 RPM is necessary to obtain the proper cross-
hatch angle. The number of up and down strokes per
minute can be regulated to get the desired 40–60
degree angle. Faster up and down strokes increase
the cross-hatch angle.
(5) After honing, it is necessary that the block be
cleaned again to remove all traces of abrasive.
ENGINE 2.0L DOHC 9 - 37