2003 FORD MUSTANG timing

IN-
VEHICLE REPAIR
Camshaft
Removal 1. Remove the valve tappets. For additional information, refer to Valve Tappets in this section.
2. Remove the timing chain. For additional information, refer to Timing Chain in this section.
3. Position the wire harness aside.
4. Remove the radiator fan and shroud assembly.
5. Remove the engine balance shaft drive gear from the camshaft. 1. Remove the camshaft key.
2. Remove the engine balance shaft drive gear.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Material
Item Specification
SAE 5W-
20 Premium Synthetic
Blend Motor Oil
XO- 5W20-QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
32003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Engine Dynamic Balance Shaft
Removal 1. Remove the timing chain (6268). For additional information, refer to Timing Chain in this
section.
2. Disconnect and position the wire harness aside.
3. Remove the radiator fan and shroud assembly (8146).
4. Remove the engine dynamic balance shaft (6A311). zRemove the bolts.
z Remove the balance shaft driver gear, thrust plate and engine dynamic balance shaft as
an assembly. Installation SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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1. Turn the camshaft so that the timing mark is at 12 o'clock and install the engine dynamic
balance shaft assembly into the cylinder block (6010). Turn the engine balance shaft driven
gear so that the timing mark lines up with the timing mark on the engine balance shaft drive
gear (6A303).
2. NOTE: If correctly aligned, the engine dynamic balance shaft keyway will be at 12 o'clock and
the camshaft keyway will be at 6 o'clock on the camshaft.
Install the bolts.
3. Install the radiator fan and shroud assembly.
4. Connect the connector and install the pin- type retainer. Klj . 2 ba
32003 Mustang Workshop Manual
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5. Install the timing chain. For additional information, refer to
Timing Chain in this section. Klj . 3 ba
32003 Mustang Workshop Manual
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IN-
VEHICLE REPAIR
Timing Chain
Removal 1. Remove the timing cover. For additional information, refer to Engine Front Cover in this section.
2. Remove the camshaft position sensor drive gear. 1. Remove the bolt.
2. Remove the camshaft position sensor drive gear.
3. Rotate the crankshaft (6303) until the timing marks and keyways align.
4. Compress and install a retaining pin to hold the timing chain tensioner (6L266).
5. Remove the camshaft sprocket (6256), the crankshaft sprocket (6306) and the timing chain/belt (6268) as an assembly.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
52003 Mustang Workshop Manual
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6. Remove the timing chain tensioner.
1. Remove the bolts.
2. Remove the timing chain tensioner.
Installation 1. Install the timing chain tensioner. 1. Position the timing chain tensioner.
2. Install the bolts.
2. Rotate the crankshaft so the number one piston (6108) is at top dead center (TDC) and the key is at the 12 o'clock position. Klj . 2 ba
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3. If necessary, retract the tensioner pad retracting mechanism.
1. Compress the tensioner pad retracting mechanism.
2. Insert a retaining pin.
4. Turn the camshaft sprocket so that the timing mark is on the bottom of the balance shaft (6250).
5. Install the timing chain, the camshaft sprocket and the crankshaft sprocket.
6. Make sure that the timing marks and the keyways are aligned. Klj . 3 ba
52003 Mustang Workshop Manual
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52. Remove the camshaft position sensor drive gear.
1. Remove the bolt.
2. Remove the camshaft position sensor drive gear.
53. Compress and install a retaining pin to hold the timing chain tensioner.
54. Remove the camshaft sprocket, the crankshaft sprocket and the timing chain as an assembly.
55. Remove the timing chain tensioner. 1. Remove the bolts.
2. Remove the timing chain tensioner. Klj . 15 ba
212003 Mustang Workshop Manual
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