Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1508
1. Disassemble the oil pump (Refer to 9 - ENGINE/
LUBRICATION/OIL PUMP - DISASSEMBLY).
2. Clean all oil pump components (Refer to 9 -
ENGINE/LUBRICATION/OIL PUMP - CLEANING).
3. Inspect mating surface of the oil pump housing and
cover. Replace oil pump if deeply scratched or
grooved (minor surface scratches and polishing is
normal).
4. Lay a straightedge (1) across the pump cover (3)
surface. If a 0.025 mm (0.001 in.) feeler gauge (2)
can be inserted between cover and straight edge,
cover should be replaced.
5. Measure thickness and diameter of outer rotor. If
outer rotor thickness measures 9.954 mm (0.392
in.) or less , or if the diameter is 89.174 mm
(3.5108 in.) or less, replace outer rotor.
6. Measure the inner rotor, if inner rotor measures
9.954 mm (0.392 in.) or less replace inner rotor.
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ENGINE - 2.7L DOHC - SERVICE INFORMATION
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7. Slide outer rotor into body, press to one side with
fingers and measure clearance between rotor and
body (2). If measurement is 0.39 mm (0.015 in.) or
more, replace body only if outer rotor is in
specifications.
8. Install inner rotor (3) into body. If clearance
between inner rotor (3) and outer rotor (1) is 0.20
mm (0.008 in.) or more, replace both rotors.
9. Place a straightedge (1) across the face of the
body, between bolt holes. If a feeler gauge (2) of
0.077 mm (0.003 in.) or more can be inserted
between rotors and the straightedge, replace pump
assembly ONLY if rotors are in specification.
10. Assemble oil pump (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PUMP - ASSEMBLY).
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ENGINE - 2.7L DOHC - SERVICE INFORMATION
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ASSEMBLY
1. Assemble pump using new parts as required.
2. Tighten cover screws (2) to 12 N·m (105 in. lbs.).
3. Prime oil pump before installation by filling rotor
cavity with engine oil.
INSTALLATION
CAUTION: Crankshaft position must be at 60°
ATDC of No.1 cylinder before installing oil pump
(1). This position will properly locate oil pump. If
not properly located, severe damage to oil pump
can occur.
1. Prime oil pump before installation by filling rotor
cavity with engine oil.
2. If crankshaft has been rotated, it must be reposi-
tioned to 60° ATDC of No.1 cylinder (1) prior to oil
pump installation.
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ENGINE - 2.7L DOHC - SERVICE INFORMATION
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3. Install oil pump (5) carefully over crankshaft and
into position.
4. Install oil pump attaching bolts (1). Tighten bolts to
28 N·m (250 in. lbs.).
5. Install oil pick-up tube (3) with new O-ring (2).
Lubricate O-ring (2) with clean engine oil before
installation. Tighten attaching bolts (1) to 28 N·m
(250 in. lbs.).
6. Install oil pan (Refer to 9 - ENGINE/LUBRICATION/
OIL PAN - INSTALLATION).
7. Install timing chain and sprockets (Refer to 9 -
ENGINE/VALVE
TIMING/TIMING
BELT/CHAIN
AND SPROCKETS - INSTALLATION).
8. Install timing chain cover (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT / CHAIN COVER(S)
- INSTALLATION).
9. Install crankshaft vibration damper (Refer to 9 -
ENGINE/ENGINE BLOCK/VIBRATION DAMPER -
INSTALLATION).
10. Fill crankcase with engine oil to correct level.
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ENGINE - 2.7L DOHC - SERVICE INFORMATION
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