Dodge Neon / Neon SRT-4. Manual — part 244
OIL PAN
REMOVAL
(1) Disconnect negative cable from battery.
(2) Raise vehicle on hoist.
(3) Drain engine oil and remove oil filter.
(4) Remove oil filter adaptor from engine block
(Fig. 110) (Refer to 9 - ENGINE/LUBRICATION/OIL
FILTER ADAPTER - REMOVAL).
(5) Remove structural collar (Refer to 9 - ENGINE/
ENGINE
BLOCK/STRUCTURAL
COVER
-
REMOVAL).
(6) Remove
intake
manifold
support
bracket
attaching bolts (Fig. 111).
(7) Remove intake manifold support bracket (Fig.
111).
(8) Remove transaxle dust cover (Fig. 111).
(9) Remove oil pan bolts.
(10) Remove oil pan.
INSTALLATION
(1) Clean oil pan and all sealing surfaces.
(2) Apply Mopar
t Silicone Rubber Adhesive Seal-
ant at the oil pump to engine block parting line (Fig.
112).
(3) Position a new oil pan gasket onto pan.
(4) Install oil pan and tighten screws to 12 N·m
(105 in. lbs.).
(5) Install transaxle dust cover (Fig. 111).
(6) Install intake manifold support bracket (Fig.
111).
(7) Install structural collar (Refer to 9 - ENGINE/
ENGINE BLOCK/STRUCTURAL COVER - INSTAL-
LATION).
(8) Install oil filter adaptor (Refer to 9 - ENGINE/
LUBRICATION/OIL FILTER ADAPTER - INSTAL-
LATION).
(9) Install oil filter (Refer to 9 - ENGINE/LUBRI-
CATION/OIL FILTER - INSTALLATION).
(10) Lower vehicle and fill engine crankcase with
proper oil to correct level.
Fig. 110 Oil Filter Adaptor
1 - O-RING
2 - LOCATING ROLL PIN
3 - OIL FILTER ADAPTER
Fig. 111 Manifold Support Bracket, Structural Collar,
and Dust Cover
1 - SUPPORT BRACKET
2 - STRUCTURAL COLLAR
3 - DUST COVER
Fig. 112 Oil Pan Sealing
1 - PLACE A 1/8 INCH BEAD OF SEALER AT THE PARTING LINE
OF THE OIL PUMP TO ENGINE BLOCK
9 - 70
ENGINE 2.0L SOHC
PL/SRT-4
OIL PRESSURE SENSOR/
SWITCH
DESCRIPTION
The oil pressure switch is located on the right rear
side of the engine block (Fig. 113). The oil pressure
switch is a pressure sensitive switch that is activated
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. 114).
INSTALLATION
(1) Install oil pressure switch and connect electri-
cal connector (Fig. 114).
(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 front timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT COVER(S)
- REMOVAL).
(3) Remove timing belt (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT AND SPROCKETS -
REMOVAL).
(4) Remove timing belt tensioner assembly (Refer
to 9 - ENGINE/VALVE TIMING/TIMING BELT
TENSIONER ASSEMBLY - REMOVAL).
(5) Remove the camshaft sprocket and the rear
timing belt cover (Refer to 9 - ENGINE/VALVE TIM-
ING/TIMING BELT COVER(S) - REMOVAL).
(6) Remove the oil pan (Refer to 9 - ENGINE/LU-
BRICATION/OIL PAN - REMOVAL).
(7) Remove crankshaft sprocket using Special Tool
6793 and insert C-4685-C2 (Fig. 115).
(8) Remove the oil pick-up tube.
Fig. 113 Oil Pressure Switch
Fig. 114 Engine Oil Pressure Switch
Fig. 115 Crankshaft Sprocket—Removal
1 - SPECIAL TOOL 6793
2 - SPECIAL TOOL C-4685–C2
3 - CRANKSHAFT SPROCKET
PL/SRT-4
ENGINE 2.0L SOHC
9 - 71
(9) Remove fasteners securing oil pump to engine
block. Remove oil pump (Fig. 116) and front crank-
shaft seal.
DISASSEMBLY
(1) To remove the relief valve, proceed as follows:
(2) Remove the threaded plug and gasket from the
oil pump (Fig. 117).
CAUTION: Oil pump pressure relief valve must be
installed as shown in (Fig. 117) or serious damage
may occur.
(3) Remove spring and relief valve (Fig. 117).
(4) Remove oil pump cover screws, and lift off
cover.
(5) Remove pump rotors.
Fig. 116 Oil Pump and Tube
1 - O-RING
7 - O-RING
2 - OIL FILTER ADAPTER
8 - OIL PUMP BODY
3 - OIL PAN GASKET
9 - FILTER
4 - OIL PAN
10 - O-RING
5 - OIL PICK-UP TUBE
11 - NIPPLE
6 - DRAIN PLUG
Fig. 117 Oil Pressure Relief Valve
1 - RETAINER CAP
2 - GASKET
3 - OIL PUMP BODY
4 - RELIEF VALVE
5 - SPRING
9 - 72
ENGINE 2.0L SOHC
PL/SRT-4
OIL PUMP (Continued)
(6) Wash all parts in a suitable solvent and inspect
carefully for damage or wear (Fig. 118).
INSPECTION
(1) Clean all parts thoroughly. Mating surface of
the oil pump should be smooth. Replace pump cover
if scratched or grooved.
(2) Lay a straightedge across the pump cover sur-
face (Fig. 119). If a 0.076 mm (0.003 in.) feeler gauge
can be inserted between cover and straight edge,
cover should be replaced.
(3) Measure thickness and diameter of outer rotor.
If outer rotor thickness measures 7.64 mm (0.301 in.)
or less (Fig. 120), or if the diameter is 79.95 mm
(3.148 in.) or less, replace outer rotor.
(4) If inner rotor measures 7.64 mm (0.301 in) or
less replace inner rotor (Fig. 121).
Fig. 118 Oil Pump
1 - OIL PUMP BODY
2 - OIL PUMP COVER
3 - OUTER ROTOR
4 - INNER ROTOR
Fig. 119 Checking Oil Pump Cover Flatness
1 - STRAIGHT EDGE
2 - FEELER GAUGE
3 - OIL PUMP COVER
Fig. 120 Measuring Outer Rotor Thickness
Fig. 121 Measuring Inner Rotor Thickness
PL/SRT-4
ENGINE 2.0L SOHC
9 - 73
OIL PUMP (Continued)
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