Rear main seal FORD MUSTANG 2003 User Guide

Remove the four main bearing caps and lower crankshaft main bearings.
1. Remove the stud bolts.
2. Remove the main bearing cap and the lower crankshaft main bearing.
66. Repeat the main bearing cap and the lower bearing removal steps for the remaining main bearing caps and the crankshaft lower main bearings.
67. CAUTION: The crankshaft journals must be protected from damage when the
crankshaft is removed.
Remove the crankshaft and the crankshaft rear seal.
68. NOTE: For ease in assembly, record the location of the crankshaft upper thrust bearing.
Remove the crankshaft upper main bearings and the crankshaft upper thrust bearing.
69. Using the camshaft bearing service set, remove the camshaft bearings. Klj . 19 ba
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11.
CAUTION: The crankshaft journals must be protected from damage when installing
the crankshaft.
Position the crankshaft.
CAUTION: The main bearings are precision selective fit. Inspect the bearing clearance.
For additional information, refer to Section 303 - 00 .
12. NOTE: If the rear main bearing cap 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 can cause
future oil leakage.
Clean the rear main bearing cap sealing area with metal surface cleaner. Apply silicone gasket
and sealant to the rear main bearing cap- to-cylinder block parting line. Klj . 5 ba
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40. Install the crankshaft pulley bolt.
41. Install the camshaft synchronizer. For additional information, refer to
Section 303 - 14 .
42. Install the water pump pulley and the retaining bolts.
43. 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 can cause future oil
leakage.
Clean and apply the sealant to the oil pan sealing areas shown and install the oil pan rear seal.
1. Apply silicone gasket and sealant to the rear main bearing cap.
2. Install the oil pan rear seal.
3. Clean the oil pan mating surfaces with metal surface cleaner and apply silicone gasket and sealant to the oil pan mating surface. Klj . 14 ba
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a
Refer to the procedure in this section. Power steering reservoir bolts 10 — 89
Water outlet connector bolts 25 18 —
Camshaft cap cluster to cylinder head bolts 10 — 89
Torque converter nuts 25 18 —
Timing chain tensioner bolts 25 18 —
Transmission filler tube bolt 47 35 —
A/C compressor bolts 25 18 —
Ignition coil bolts 6 — 53
Generator brace bolts 10 — 89
Primary timing chain guide-
to-engine bolts 10 — 89
Accelerator cable bracket bolts 10 — 89
Rear seal retainer bolts 10 — 89
Pressure plate bolts 2 — 47
Spark plugs 18 13 —
Crankshaft timing bolt sensor assembly 10 — 89
Camshaft timing bolt sensor assembly 10 — 89
Fuel rail studs 10 — 89
Engine coolant sensor 15 11 —
Exhaust manifold—
stud to cylinder head 10-
13 7-10 —
Throttle body adaptor bolts
a — — —
Throttle body bolts 10 — 89
Idle air control valve 10 — 89
RFI capacitor nut 10 — 89
Generator bolts 25 18 —
Oil pan drain plug 14 10 —
Water bypass tube bracket bolt 25 18 —
Subframe bolts 115 85 —
Battery lead to generator 10 — 89
EGR vacuum regulator solenoid bracket 10 — 89
Pipe plug—
water drain 20 15 —
Screen and cover assembly to main bearing cap stud spacer 25 18 —
Wiring harness retainer nut 10 — 89
Oil pressure switch
a — — —
A/C muffler stud to cylinder head 10 — 89
EGR tube to exhaust manifold connector 50 37 — Klj . 5 ba
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4. Using the special tools, remove the rear main seal.
5. Remove the rear seal retainer plate.
6. Mount the engine on a work stand.
7.
NOTE: RH shown, LH similar.
Remove the RH and LH lifting eyes. Klj . 3 ba
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Install the oil pump screen cover and tube.
26. NOTE: If not secured within four minutes, sealant must be removed and sealing area cleaned
with metal surface cleaner. Allow to dry until there are no signs of wetness, or four minutes,
whichever is longer. Failure to follow this procedure can cause future oil leakage.
If the retainer plate was removed, apply a 4 mm (0.16 in) bead of silicone gasket and sealant
around the rear oil seal retainer sealing surface.
27. Install the rear main seal retainer plate. Tighten the bolts in the sequence shown. zTighten bolts 1- 6 to 10 Nm (89 lb- in).
z Hand- tighten bolts 7 and 8.
z Tighten bolts 7 and 8 to 20 Nm (15 lb- ft).
z Tighten bolts 7 and 8 an additional 60 degrees.
28. Install the oil pan and gasket and loosely install the bolts. Klj . 12 ba
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96. Install the RH and LH special tools.
97. Using the special tool, remove the engine from the stand.
98. Using the special tool, install the crankshaft rear main seal.
zLubricate the oil seal using clean engine oil. 5 — To ignition coils (8)
6 — To engine coolant temperature sensor
7 — To throttle position sensor
8 — To idle air control valve
9 — To EGR vacuum regulator
10 — To differential pressure feedback EGR
11 — To fuel pressure regulator
12 — Fuel injection ground
13 — To generator
14 — To camshaft position sensor
15 — To body
16 — To heated oxygen sensor (2)
17 — Engine bulkhead connector
18 — To low coolant sensor
19 — To body
20 — To power distribution box
21 — To body Klj . 34 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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Disassembly
1. Remove the bolts and the flywheel.
2. Using the special tool, remove the rear oil slinger.
3. Using the special tool, remove the rear main seal. 303-
567 (T97P-6565- AH) Remover, Crankshaft Front Oil
Seal
303-
107 (T74P-6700- A) Klj . 2 ba
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Assembly
NOTE:
Before assembling the cylinder block, all sealing surfaces must be free from chips, dirt, paint
and foreign material. Also, make sure the coolant and oil passages are clear.
1. Record the main bearing code found on the front of the engine block. Installer, Crankshaft Rear Oil
Seal
303-
516 (T95P-6701- BH) Compressor, Piston Ring
303-
D032 (D81L-6002- C) or
equivalent Holding Tool, Crankshaft
303-
448 (T93P-6303- A)
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 SAE 5W-
20 Premium Synthetic
Blend Engine Oil
XO- 5W20- QSP or equivalent WSS-
M2C153-
H Motorcraft Premium Engine
Coolant
VC
-4-A (in Canada CXC- 10; in
Oregon VC- 5) or equivalent ESE-
M97B44-
A Motorcraft Premium Gold
Engine Coolant
VC
-7-A (in Canada VC-7- B) or
equivalent WSS-
M97B51-
A1 Klj . 2 ba
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