2003 FORD MUSTANG belt

5. Remove the belt idler bracket support assembly.
All vehicles 6. Drain the engine coolant. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section.
7. Loosen the coolant pump pulley bolts.
8. Remove the accessory drive belt. For additional information, refer to Section 303 - 05 .
9. Remove the bolts and the coolant pump pulley. Klj . 2 ba
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SPECIFICATIONS
SECTION 303-
05: Accessory Drive 2003 Mustang Workshop Manual General Specifications
Item Specification
Accessory drive belt 6 ribs
Supercharger drive belt 8 ribs
Torque Specifications Description Nm lb-
ft lb-
in Belt idler pulley bolt 25 18 —
Drive belt tensioner bolt —
3.8L 82 60 —
Drive belt tensioner bolt —
4.6L 10 — 89
Drive belt tensioner bolt —
Supercharged engine 25 18 —
Cooling hose mounting bolt 25 18 —
Belt idler support assembly bracket bolts 25 18 —
Air intake scoop bolts 25 18 —
Air intake scoop bracket bolt 25 18 —
Air intake scoop bracket nuts 25 18 —
Air intake scoop bracket throttle body nut 9 — 80
Exhaust gas recirculation (EGR) vacuum regulator solenoid bolts 10 — 89 Klj . 1 ba
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DESCRIPTION AND OPERATION
Accessory Drive
Component Locations—
3.8L
Component Locations— 4.6L
SECTION 303-
05: Accessory Drive 2003 Mustang Workshop Manual Item Part Number Description
1 19D784 A/C clutch pulley
2 8620 Drive belt
3 8509 Coolant pump pulley
4 8678 Belt idler pulley
5 10344 Generator pulley
6 10344 Power steering pump pulley
7 63126 Crankshaft vibration damper
8 6B209 Drive belt tensioner
9 — Drive belt tensioner (part of 6B209)
Item Part Number Description
1 10344 Generator pulley
2 8620 Drive belt
3 8A528 Coolant pump pulley
4 3D673 Power steering pump pulley
5 6316 Crankshaft vibration damper
6 19D784 A/C clutch pulley Klj . 1 ba
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7 6B209 Drive belt tensioner
8 19A216 Belt idler pulley
9 19A216 Belt idler pulley Klj . 2 ba
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DESCRIPTION AND OPERATION
Accessory Drive —
Cobra
Component Locations — Supercharger Accessory Drive Component Location — Accessory Drive SECTION 303-
05: Accessory Drive 2003 Mustang Workshop Manual Item Part Number Description
1 — Supercharger pulley
2 8678 Belt idler pulley
3 10344 Generator pulley
4 8678 Belt idler pulley
5 6C254 Crankshaft extension pulley
6 6B209 Belt tensioner
7 8678 Belt idler pulley
8 8620 Drive belt Klj . 1 ba
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Item Part Number Description
1 8678 Belt idler pulley
2 8678 Belt idler pulley
3 8678 Belt idler pulley
4 3A733 Power steering pulley
5 10344 Coolant pump pulley
6 6C254 Crankshaft pulley
7 6B209 Belt tensioner
8 19D784 A/C clutch pulley
9 8620 Drive belt Klj . 2 ba
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DIAGNOSIS AND TESTING
Accessory Drive
Inspection and Verification
1. Verify customer concern by running the engine.
2. Inspect the drive belt for chunking, fraying and wear.
3. Check the drive belt for correct routing.
Drive Belt Cracking/Chunking/Wear
V Ribbed Serpentine Drive Belt With Cracks Across Ribs
The accessory drive:
zhas a single serpentine drive belt.
z has an automatic drive belt tensioner.
z does not require adjustment.
V Ribbed Belt With Chunks of Rib Missing
Symptom Chart SECTION 303-
05: Accessory Drive 2003 Mustang Workshop Manual Klj . 1 ba
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Component Tests
Drive Belt Noise/Flutter
Drive belt chirp occurs due to pulley misalignment or excessive pulley runout. It can be the result of a
damaged pulley or an incorrectly aligned pulley.
To correct, determine the area where the noise comes from. Check each of the pulleys in that area
with a straightedge to the crankshaft pulley, looking for accessory pulleys out of position in the fore/aft
direction or at an angle to the straightedge.
Drive belt squeal is an intermittent noise that occurs when the drive belt slips on a pulley during certain
conditions, such as: engine start up, rapid engine acceleration, or A/C clutch engagement.
Drive belt squeal can occur:
zif any of the accessories are damaged, have a worn or damaged bearing, internal torsional
resistance above normal. All accessories should be rotatable by hand in the unloaded condition.
If not, inspect the accessory.
z if fluid gets on the drive belt. This includes power steering fluid, engine coolant, engine oil or air
conditioning system lubricant. If fluid does get on the drive belt during service, clean the drive
belt with soap and water and thoroughly rinse with clean water.
z NOTE: The drive belt tensioner arm should rotate freely without binding.
if the drive belt is too long. A drive belt that is too long will allow the drive belt tensioner arm to
go all the way to the arm travel stop under certain load conditions, which will release tension to
the drive belt. If the drive belt tensioner indicator is outside the installation wear range window,
install a new drive belt.
z if the drive belt tensioner is worn or damaged.
Belt Tension
NOTE: Drive belt tension is not adjustable.
The drive belt tensioner automatically adjusts drive belt tension. Symptom Chart Condition
Possible Sources Action
z Drive belt
noise, chirping,
flutter z
Defective/worn drive
belt.
z Misaligned pulley.
z Pulley runout.
z Damaged
accessories.
z Fluid contamination
of drive belt. z
GO to Component Tests, Drive
Belt, Noise/Flutter.
z Damaged or worn
drive belt tensioner. z
GO to Component Tests, Belt
Tensioner, Automatic.
z Premature
drive belt wear z
Defective drive belt.
z Misaligned pulley.
z Pulley runout.
z Damaged
accessories.
z Incorrectly installed
drive belt. z
GO to Component Tests, Drive
Belt Noise/Flutter and Drive
Belt Misalignment diagnosis. Klj . 2 ba
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