Chrysler 1998 Voyager Service Manual page 1101

NS
DISASSEMBLY AND ASSEMBLY (Continued)
(4) Wash all parts in a suitable solvent and
inspect carefully for damage or wear.
ASSEMBLY
(1) Assemble pump, using new parts as required.
Install the inner rotor with chamfer facing the
cast iron oil pump cover.
(2) Prime oil pump before installation by filling
rotor cavity with engine oil.
(3) Install cover and tighten screws to 12 N·m
(105 in. lbs.).
CAUTION: Oil pump pressure relief valve must be
installed as shown in (Fig. 95) or serious damage
may occur.
(4) Install relief valve, spring, gasket and cap as
shown in (Fig. 95). Tighten cap to 41 N·m (30 ft. lbs.)
CLEANING AND INSPECTION
CYLINDER HEAD
CLEANING
Remove all gasket material from cylinder head and
block. Be careful not to gouge or scratch the alumi-
num head sealing surface.
INSPECTION
(1) Cylinder head must be flat within 0.1 mm
(0.004 inch) (Fig. 96).
(2) Inspect camshaft bearing journals for scoring.
Fig. 96 Checking Cylinder Head Flatness
VALVE GUIDES
(1) Remove carbon and varnish deposits from
inside of valve guides with a reliable guide cleaner.
(2) Using a small hole gauge and a micrometer,
measure valve guides in 3 places top, middle and bot-
tom (Fig. 97). Refer to Valve Guide Specification
Chart. Replace guides if they are not within specifi-
cation.
(3) Check valve guide height (Fig. 98).
Fig. 97 Checking Wear on Valve Guide—Typical
VALVE GUIDE SPECIFICATION CHART
Valve Guide Diameter
Intake and 5.975 - 6.000 mm
Exhaust Valve: (0.2352 - 0.2362 in.)
Valve Guide Clearance
Intake Valve: 0.048 - 0.066 mm
(0.0018 - 0.0025 in.)
Exhaust Valve: 0.0736 - 0.094 mm
(0.0029 - 0.0037 in.)
Fig. 98 Valve Guide Height
VALVE AND VALVE SPRING
VALVES
(1) Clean valves thoroughly and discard burned,
warped and cracked valves.
(2) Measure valve stems for wear. Measure stem
about 60 mm beneath the valve lock grooves.
2.4L ENGINE 9 - 51
New Service
Limit
0.25 mm
(0.010 in.)