DIY Serpentine Belt Change 07 Ford Fusion Diagram Quick Reference Today

Vehicle Spec Focus: 2007 Ford Fusion with 2.3L Duratec I4 engine. Verify your engine size before proceeding.

Essential Tools & Safety

• New Serpentine Belt (Gates K060748 or equivalent)
• Serpentine Belt Tool (Long 1/2" Drive Breaker Bar or Socket Wrench)
• Socket Set (13mm, 15mm typically needed)
• Gloves & Safety Glasses

Critical: Engine OFF, keys removed. Engage parking brake. Allow engine to cool.

Serpentine Belt Routing Diagram (2.3L)

Standard Configuration Pulley Landmarks:

• Crankshaft Pulley (Bottom center, largest pulley)
• Idler Pulley (Smooth, top left near tensioner)
• Alternator Pulley (Top right, ribbed)
• Power Steering Pump Pulley (Center right, ribbed)
• Air Conditioning Compressor Pulley (Bottom right, ribbed)
• Tensioner Pulley (Center left, ribbed, on spring-loaded arm)

Routing Path: Crankshaft Pulley (clockwise) → Idler Pulley (over top) → Alternator Pulley (clockwise) → Power Steering Pump Pulley (clockwise) → Air Conditioning Compressor Pulley (clockwise) → Tensioner Pulley (clockwise) → back to Crankshaft Pulley.

Diagram Key Tip: Note the arrow cast into the tensioner assembly indicating rotation direction for release.

Belt Removal Procedure

1. Locate spring-loaded belt tensioner assembly.
2. Insert breaker bar/serpentine tool socket onto tensioner pulley center bolt (typically 15mm).
3. Firmly rotate tensioner arm CLOCKWISE (against spring pressure) to fully relieve belt tension.
4. Slip old belt off one pulley (usually easiest off idler or tensioner). Release tensioner slowly.
5. Work entire old belt free from all pulleys. Note its routing carefully.

Belt Installation Procedure

1. Route new belt over all pulleys EXCEPT the tensioner pulley (refer to diagram). Ensure ribs seat correctly in all pulley grooves.
2. Insert tool on tensioner center bolt. Rotate tensioner arm CLOCKWISE again until sufficient slack appears.
3. Slide new belt onto tensioner pulley groove. Double-check alignment.
4. Slowly release tensioner arm allowing it to apply pressure to the new belt. Remove tool.
5. Critical Check: Visually verify belt is seated properly in every pulley groove along its entire path. Pay special attention to alternator and power steering pump positions.
6. Rotate crankshaft pulley clockwise 2 full turns by hand (wrench on crank bolt) to ensure smooth tracking and no jumps. Recheck routing.

Final Step: Start engine briefly. Listen for squealing or chirping indicating misalignment or improper tension. Inspect belt tracking immediately after shutdown.