Chrysler PT Cruiser. Manual — part 715
by the engine’s oil pressure (in the main oil gallery).
The switch is a two terminal device (one terminal is
provided to the wiring harness and the other termi-
nal is the switch’s metal housing that screws into the
engine block).
OPERATION
The oil pressure switch is normally “Closed.” The
switch changes from a
9Closed9 circuit to an 9Open9
circuit, on increasing pressure of 7 psig. The oil pres-
sure switch changes from an
9Open9 circuit to a
9Closed9 circuit, on decreasing pressure, between 2
psig and 4 psig.
REMOVAL
(1) Raise vehicle.
(2) Position oil collecting container under pressure
switch location.
(3) Disconnect oil pressure switch electrical con-
nector and remove switch (Fig. 115).
INSTALLATION
(1) Install oil pressure switch and connect electri-
cal connector (Fig. 115).
(2) Lower vehicle.
(3) Start engine and allow to run a minimum of 2
minutes.
(4) Shut engine off and check engine oil level.
Adjust level as necessary.
OIL PUMP
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove timing belt (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT AND SPROCKETS -
REMOVAL).
(3) Remove timing belt rear cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT COVER(S)
- REMOVAL).
(4) Remove oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL).
(5) Remove
crankshaft
sprocket
using
Special
Tools 6793 and C-4685-C2 (Fig. 116).
(6) Remove crankshaft key (Fig. 117).
Fig. 115 Engine Oil Pressure Switch
Fig. 116 Crankshaft Sprocket - Removal
1 - SPECIAL TOOL 6793
2 - SPECIAL TOOL C-4685–C2
3 - CRANKSHAFT SPROCKET
Fig. 117 Crankshaft Key
1 - CRANKSHAFT KEY
9 - 140
ENGINE 2.4L DOHC
PT
OIL PRESSURE SENSOR/SWITCH (Continued)
(7) Remove oil pick-up tube.
(8) Remove oil pump (Fig. 118) and front crank-
shaft seal.
DISASSEMBLY
(1)
Remove oil pump cover fasteners, and lift off
cover (Fig. 119).
(2)
Remove pump rotors (Fig. 119).
(3)
Wash all parts in a suitable solvent and
inspect carefully for damage or wear.
CLEANING
Clean all parts thoroughly.
INSPECTION
(1) Inspect the mating surface of the oil pump.
Surface should be smooth. Replace pump cover if
scratched or grooved.
(2) Lay a straightedge across the pump cover sur-
face (Fig. 120). If a 0.025 mm (0.001 in.) feeler gauge
can be inserted between cover and straight edge,
cover should be replaced.
Fig. 119 Oil Pump
1 - O-RING
2 - FRONT CRANKSHAFT SEAL
3 - INNER ROTOR
4 - OIL PUMP COVER
5 - FASTENER
6 - OUTER ROTOR
7 - OIL PUMP BODY
Fig. 120 Checking Oil Pump Cover Flatness
1 - STRAIGHT EDGE
2 - FEELER GAUGE
3 - OIL PUMP COVER
Fig. 118 Oil Pump
1 - BOLTS
2 - BOLTS
3 - OIL PUMP
PT
ENGINE 2.4L DOHC
9 - 141
OIL PUMP (Continued)
(3) Measure thickness and diameter of outer rotor.
If outer rotor thickness measures 10.699 mm (0.421
in.) or less (Fig. 121), or if the diameter is 85.924 mm
(3.383 in.) or less, replace outer rotor.
(4)
If inner rotor measures 10.699 mm (0.421 in.)
or less replace inner rotor (Fig. 122).
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 fasteners to 13 N·m
(118 in. lbs.) (Fig. 119).
INSTALLATION
(1) Make sure all surfaces are clean and free of oil
and dirt.
(2) Apply Mopar
t Gasket Maker to oil pump as
shown in (Fig. 123). Install O-ring into oil pump body
discharge passage.
(3) Prime oil pump with engine oil before installa-
tion.
(4) Align oil pump rotor flats with flats on crank-
shaft. Install the oil pump to the block (Fig. 118).
CAUTION: To align, the front crankshaft seal MUST
be out of pump, or damage may result.
(5) Install new front crankshaft seal using Special
Tool 6780 (Fig. 124).
Fig. 121 Measuring Outer Rotor Thickness
Fig. 122 Measuring Inner Rotor Thickness
Fig. 123 Oil Pump Sealing
1 - O-RING
2 - SEALER LOCATION
Fig. 124 Front Crankshaft Seal - Installation
1 - PROTECTOR
2 - SEAL
3 - SPECIAL TOOL 6780
9 - 142
ENGINE 2.4L DOHC
PT
OIL PUMP (Continued)
(6) Install crankshaft key (Fig. 117).
CAUTION: The crankshaft sprocket is set to a pre-
determined depth from the factory for correct tim-
ing belt tracking. If removed, use of Special Tool
6792 is required to set the sprocket to original
installation depth. An incorrectly installed sprocket
will result in timing belt and engine damage.
(7) Install crankshaft sprocket using Special Tool
6792 (Fig. 125).
(8) Install oil pump pick-up tube.
(9) Install oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - INSTALLATION).
(10) Install timing belt rear cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT COVER(S)
- INSTALLATION).
(11) Install timing belt (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT AND SPROCKETS -
INSTALLATION).
OIL JET - 2.4L TURBO
DESCRIPTION
The 2.4L Turbocharged engines are equipped with
four oil jets installed in the engine block. The oil jets
are provided engine oil pressure from the main oil
gallery. The oil jets are used to cool the pistons. An
integral check ball controls the flow of oil through
the oil jet (Fig. 126).
REMOVAL
(1) Remove crankshaft (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT - REMOVAL).
(2) Remove oil jet fastener (Fig. 127).
CAUTION: Do Not Pull on Oil Jet Tube
(3) Using pliers or other similar tool, pull oil jet
from engine block.
Fig. 125 Crankshaft Sprocket - Installation
1 - SPECIAL TOOL 6792
2 - TIGHTEN NUT TO INSTALL
Fig. 126 Oil Jet - 2.4L Turbo
1 - PISTON ASSEMBLY
2 - ENGINE BLOCK
3 - OIL JET
Fig. 127 Oil Jet Fastener - 2.4L Turbo
1 - FASTENER - 12 N·m (105 in. lbs.)
2 - OIL JET
3 - ENGINE BLOCK
4 - CYLINDER WALL
PT
ENGINE 2.4L DOHC
9 - 143
OIL PUMP (Continued)
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