2003 FORD MUSTANG Oil pan

a
Refer to the procedure. Oil pan-to-
engine front cover bolts a — — —
Oil pump-
to-cylinder block bolt 10 — 89
Radio ignition interference capacitor bolts 25 18 —
Oil pump screen and pickup tube-
to-main bearing cap stud spacer bolt 25 18 —
Water pump pulley bolts 25 18 —
Throttle body spacer nuts 25 18 —
Vacuum accessory bracket fasteners 10 — 89
Valve cover bolt 10 — 89
Wiring harness support bracket 25 18 —
Water pump-
to-cylinder block bolt 25 18 —
EGR valve to exhaust manifold tube nuts 40 30 —
Power steering pump to engine 25 18 —
Power steering hose bracket nut 25 18 —
Power steering reservoir bracket fasteners 10 — 89
Supercharger degas bottle bolts 10 — 89
Camshaft cap cluster to cylinder head 10 — 89
Timing chain tensioner bolts—
primary 25 18 —
Timing chain tensioner bolts—
secondary 10 — 89
Ignition coil cover bolts 10 — 89
Generator mounting bracket retainers 10 — 89
Oil level indicator tube retainer 10 — 89
Primary timing chain guide-
to-engine bolts 10 — 89
Oil pump screen and pickup tube spacer to main bearing stud 25 18 —
Belt idler pulley bolt 25 18 —
Subframe brace nuts 41 30 — Klj . 5 ba
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z
are positioned so that their tips direct fuel just ahead of the engine intake valves.
z are connected in series with the fuel pressure sensor.
z supply fuel from the fuel tank with a fuel pump mounted in the fuel tank.
A constant fuel pressure drop is maintained across the fuel injectors by the fuel pressure sensor. The
fuel pressure sensor:
zis positioned upstream from the fuel injectors on the fuel injection supply manifold.
Valve Train
The valve train operates as follows:
zball- tip hydraulic lash adjusters provide automatic lash adjustment.
z roller followers ride on the camshaft lobes, transferring the up-and- down motion of the
camshafts to the valves in the cylinder heads.
Positive Crankcase Ventilation System
All engines are equipped with a closed- type positive crankcase ventilation system recycling the
crankcase vapors to the upper intake manifold.
Lubrication System
The engine lubrication system operates as follows:
zoil is drawn into the oil pump through the oil pump screen cover and tube in the sump of the oil
pan.
z oil is pumped through the oil bypass filter on the left front side of the cylinder block.
z oil enters the main oil gallery where it is distributed to the crankshaft main journals and to both
cylinder heads.
z From the main journals, the oil is routed through cross- drilled passages in the crankshaft to
lubricate the connecting rod bearings. Controlled leakage through the crankshaft main bearings
and connecting rod bearings is slung radially outward to cool and lubricate the cylinder walls as
well as the entire connecting rod, piston and piston rings assembly.
z The left cylinder head is fed from a drilling into the supply passage feeding the main gallery at
the front of the cylinder block. The right cylinder head is fed from a drilling into the rear of the
main gallery. Main gallery pressure is reduced as it enters the cylinder head galleries through
fixed serviceable orifices located at the upper part of the feed passages. It is this reduced
pressure in the cylinder head galleries which feeds the camshaft journals, the hydraulic lash
adjusters and the primary and secondary timing chain tensioners.
z The camshaft lobe and roller followers are lubricated by splash created through valve train
operation.
Oil Pump
The lubrication system of the 4.6L (4V) engine is designed to provide optimum oil flow to critical
components of the engine through its entire operating range. The heart of the system is a positive
displacement internal gear oil pump using top seal rotors. Generically this design is known as a gerotor
pump, which operates as follows.
zThe oil pump is mounted on the front face of the cylinder block. Klj . 2 ba
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8 6K258 Stud (4 req'd)
9 6687 Oil pan baffle
10 N806180 Spacer
11 N605904 Bolt
12 6710 Oil pan gasket
13 6675 Oil pan
14 W701240 Bolt (16 req'd)
15 6622 Oil pump screen pickup and tube
16 N806155 Bolt (2 req'd)
17 N811280 Spacer (3 req'd)
18 6345 Bolt (6 req'd)
19 6C360 Main bearing cap adjusting screw (10 req'd)
20 6A338 Crankshaft main bearing (4 req'd)
21 N806201 Woodruff key
22 6621 Oil pump
23 N806183 Bolt (4 req'd)
24 6333 Crankshaft main bearing
25 8501 Water pump Klj . 16 ba
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IN-
VEHICLE REPAIR
Oil Pan
Removal 1. Disconnect the battery ground cable (14301). For additional information, refer to Section 414 -
01 .
2. Remove the transmission. For additional information, refer to Section 308 - 03B .
3. Remove the air cleaner outlet tube (9B659). For additional information, refer to Section 303 - 12 .
4. Remove the radiator sight shield (8C251).
5. Remove the manifold and tube assembly— accumulator to compressor, 4.6L. For additional
information, refer to Section 412 - 03 .
6. Remove the A/C line. For additional information, refer to Section 412 - 03 .
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Special Tool(s)
Compressor, Coil Spring
204-
D001 (D78P-5310- A) Lifting Bracket, Engine
303-
D088 (D93P-6001- A2) 3-
Bar Engine Support Kit
303- F072
Material Item Specification
Metal Surface Cleaner
F4AZ-
19A536- RA or
equivalent WSE-
M5B392- A Silicone Gasket and Sealant
F7AZ-
19554- EA or equivalent WSE-
M4G323-
A4 Super Premium SAE 5W-20
Engine Oil
XO- 5W20- QSP or equivalent WSS-
M2C153- H Klj . 1 ba
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13. Raise the vehicle on a hoist.
14. Remove the oil pan drain plug (6730) and drain the engine oil.
15. Using the special tool, compress the front coil springs (5310).
16. Position a safety stand.
17. Remove the four bolts. Klj . 3 ba
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22.
NOTE: Be careful when removing the oil pan gasket. It is reusable.
Remove the oil pan and gasket. zInspect the oil pan gasket for damage.
Installation 1. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other
abrasive means to clean the sealing surfaces. These tools cause scratches and gouges
which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
Clean and inspect the mating surfaces.
2. NOTE: If the oil pan is not secured within four minutes, the sealant must be removed and the
sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of wetness,
or four minutes, whichever is longer. Failure to follow this procedure may result in future oil
leakage.
Apply silicone gasket and sealant at the engine front cover- to-cylinder block mating surface.
3. NOTE: If the oil pan is not secured within four minutes, the sealant must be removed and the
sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of wetness, Klj . 5 ba
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or four minutes, whichever is longer. Failure to follow this procedure may result in future oil
leakage.
Apply silicone gasket and sealant at the rear oil seal retainer-
to-cylinder block sealing surface.
4. Install the oil pan and gasket and loosely install the bolts.
5. Tighten the bolts in the sequence shown in three stages. zStage 1: Tighten to 2 Nm (18 lb- in).
z Stage 2: Tighten to 20 Nm (15 lb- ft).
z Stage 3: Tighten an additional 60 degrees. Klj . 6 ba
112003 Mustang Workshop Manual
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6. Install the oil pan drain plug.
7. Position the starter wiring harness and install the wiring harness nuts.
8. Install the sub-
frame brace. Klj . 7 ba
112003 Mustang Workshop Manual
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