engine FORD MUSTANG 2003 Workshop Manual

IN-
VEHICLE REPAIR
Engine Front Cover
Removal 1. Remove the crankshaft front seal. For additional information, refer to Crankshaft Front Seal in
this section.
2. Remove the oil filter adapter. For additional information, refer to Oil Filter Adapter in this section.
3. Remove the three bolts shown. Loosen the fourth bolt (hidden below the power steering tube) and position the power steering pump aside.
4. Remove the A/C muffler bracket nut.
5. Remove the bolts and position the A/C compressor aside.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual 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
Engine Oil
XO- 5W20- QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
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10. Remove the bolts and the generator.
11. Remove the generator support bracket.
12. Drain the engine coolant and the supercharger coolant. For additional information, refer to
Section 303 - 03A and
Section 303 - 03B .
13. Lower the vehicle.
14. Remove the coolant bypass tube. For additional information, refer to Section 303 - 03A .
15. Remove the left and right valve covers. For additional information, refer to Valve Cover LH and
Valve Cover RH in this section.
16. Disconnect the supercharger coolant hose. Klj . 3 ba
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25. Remove the fasteners and the supercharger belt idler support bracket assembly.
26. Remove the wiring harness bracket.
27. Remove the water pump pulley.
28. Remove the bolts, the studs and the engine front cover. Klj . 6 ba
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29.
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.
Remove and discard the gasket, clean and inspect the sealing surfaces.
Installation 1. NOTE: If the valve cover 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 result in
future oil leakage.
Apply silicone gasket and sealant in the locations shown.
2. Install the engine front cover and tighten the fasteners in the sequence shown, to 25 Nm (18 lb- in). Klj . 7 ba
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26. Position the power steering pump and install the bolts.
27. Install the oil filter adapter. For additional information, refer to
Oil Filter Adapter in this section.
28. Install the crankshaft front seal. For additional information, refer to Crankshaft Front Seal in this
section.
29. Fill and bleed the engine coolant and the supercharger coolant. For additional information, refer to Section 303 - 03A and
Section 303 - 03B .
30. Fill the crankcase with clean engine oil. Klj . 14 ba
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IN-
VEHICLE REPAIR
Timing Drive Components
Removal CAUTION: Since the engine is not free- wheeling, if the crankshaft (6303) or the camshafts
(6250) are moved in any manner during removal and installation, the crankshaft and the
camshafts must be resynchronized.
1. Remove the engine front cover (6019). For additional information, refer to Engine Front Cover in
this section.
2. Remove the crankshaft sensor ring from the crankshaft.
3. CAUTION: Unless otherwise instructed, at no time when the timing chains (6268)
are removed and the cylinder heads (6049) are installed is the crankshaft (6303) or the
camshaft (6250) to be rotated. Severe piston (6108) and valve damage will occur.
Using the special tool, position the crankshaft as shown.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Special Tool(s)
Holding Tool, Crankshaft
303-
448 (T93P-6303- A) Klj . 1 ba
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11.
NOTE: LH shown; RH similar.
Position the tensioner arms and tensioners, and install the bolts.
12. Remove the retaining clips from the timing chain tensioners.
13. Position the crankshaft sensor ring on the crankshaft.
14. Install the engine front cover. For additional information, refer to Engine Front Cover in this
section. Klj . 6 ba
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IN-
VEHICLE REPAIR
Hydraulic Lash Adjusters
Removal 1. Remove the roller followers. For additional information, refer to Camshaft Roller Follower in this
section.
2. Remove the 16 hydraulic lash adjusters.
3. Inspect the roller followers. For additional information, refer to Section 303 - 00 .
Installation
1. To install, reverse the removal procedure.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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IN-
VEHICLE REPAIR
Camshaft Roller Follower
Removal and Installation 1. Remove the left and right valve cover (6582). For additional information, refer to Val ve Cover LH and
Valve Cover RH in this section.
2. Position the piston of the cylinder being repaired at the bottom of the stroke and camshaft lobe at base circle.
3. Using the special tool, compress the intake valve spring and remove the roller follower.
4. Using the special tool, compress the exhaust valve spring and remove the roller follower.
5. Repeat Steps 2, 3 and 4 to remove all the necessary roller followers. Inspect roller finger followers and camshafts. For additional information, refer to Section 303 - 00 .
6. To install, reverse the removal procedure.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Special Tool(s)
Compressor, Valve Spring
303-
452 (T93P-6565- AR) Klj . 1 ba
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IN-
VEHICLE REPAIR
Camshaft
Removal 1. Remove the roller followers. For additional information, refer to Camshaft Roller Follower in this
section.
2. Remove the LH timing chain (6268) for the LH side and both timing chains for the RH side. For additional information, refer to Timing Drive Components in this section.
3. Install the special tool.
4. Remove the exhaust camshaft sprocket (6250) and the intake camshaft bolt, washer and spacer.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Special Tool(s)
Holding Tool, Camshaft
303-
446 (T93P-6256- AHR)
Material Item Specification
Super Premium SAE 5W-20
Engine Oil
XO- 5W20- QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
72003 Mustang Workshop Manual
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