Cleaning; Inspection; Installation - Chrysler 300M Service Manual

LH
CAMSHAFT(S) (Continued)
(6) If end play is excessive, check cylinder head
and camshaft for wear; replace as necessary.
Fig. 19 Camshaft End Play - Typical
REMOVAL
Camshafts are removed from the rear of each cyl-
inder head. The cylinder head must be removed.
(1) Remove camshaft sprocket(s). (Refer to 9 -
ENGINE/VALVE TIMING/TIMING
AND SPROCKETS - REMOVAL)
(2) Remove cylinder
ENGINE/CYLINDER HEAD - REMOVAL)
(3) Mark the rocker arm and shaft assembly before
removal. Remove the rocker arm and shaft assembly
from the head. (Refer to 9 - ENGINE/CYLINDER
HEAD/ROCKER ARM
REMOVAL)
(4) Remove the rear camshaft cover and O-ring
from head.
CAUTION: Be careful not to nick or scratch the
journals when removing the camshaft.
(5) Carefully remove the camshaft from the rear of
the cylinder head (Fig. 20).

CLEANING

Clean camshaft with a suitable solvent.

INSPECTION

(1) Inspect camshaft bearing journals for damage
and binding (Fig. 21). If journals are binding, check
the cylinder head for damage. Also check cylinder
head oil holes for clogging.
(2) Check the cam lobe and bearing surfaces for
abnormal wear and damage. Replace camshaft if
defective.
NOTE: If camshaft is replaced due to lobe wear or
damage, always replace the rocker arms.
BELT/CHAIN
head(s). (Refer to
/ ADJUSTER ASSY
Fig. 20 Cylinder Head, Camshaft, and Rocker Arms
1 - SPARK PLUG TUBE
2 - ROCKER ARM ASSEMBLY
3 - CAMSHAFT
4 - SEAL
9 -
(3) Measure the lobe actual wear (Fig. 21) and
replace camshaft if out of limit. Standard value is
0.0254 mm (0.001 in.), wear limit is 0.254 mm (0.010
in.).
-
Fig. 21 Camshaft Inspection
1 - ACTUAL WEAR
2 - LEFT CAMSHAFT
3 - RIGHT CAMSHAFT
4 - BEARING JOURNAL
5 - LOBE

INSTALLATION

(1) Lubricate camshaft bearing journals and cam-
shaft lobes with clean engine oil and install camshaft
into cylinder head (Fig. 20).
ENGINE 9 - 27