2268758 | Genuine Paccar® V-Belt Idler Pulley

1. Guides the Belt

Helps route the belt correctly around:

• Alternator

• Water pump

• Power steering pump

• AC compressor

2. Maintains Belt Tension

Keeps the belt tight enough so it doesn’t:

• Slip

• Squeal

• Fall off

3. Reduces Belt Wear

A smooth, properly aligned pulley helps the belt last longer.

4. Ensures Accessories Run Properly

By keeping the belt stable, it ensures the engine-driven accessories operate normally.

1. Squealing or Chirping Noise

• A high-pitched squeal from the engine, especially on startup or when accelerating

• Often caused by a worn bearing or misalignment

2. Visible Belt Misalignment or Wear

• Belt may ride off-center

• Uneven belt wear or fraying along the edges

• Sometimes the belt may slip off the pulley

3. Vibration or Wobbling Pulley

• Pulley wobbles when the engine is running

• May indicate a loose or worn bearing inside the idler

4. Grinding or Knocking Noise

• Deep grinding sound when the pulley spins

• Sign of a seized or damaged bearing

5. Engine Accessories Not Operating Properly

• Alternator, power steering, or AC may stop working or work intermittently

• Caused by belt slipping due to a bad idler pulley

6. Visible Pulley Damage

• Cracks or chips on the pulley wheel

• Rusted or corroded surface

• Bearing may show signs of leakage or wear

7. Belt Tension Issues

• Belt feels loose or too tight

• Often caused by a pulley that is sticking or not spinning freely