Diesel Engine Parts, Products

1. Specifications

• Material: Cast iron / high-strength metal
• Diameter: 6-1/4″ (158.75 mm)
• Grooves: 8 grooves (for serpentine belt)
• Belt Type: Serpentine (multi-ribbed)
• Weight: ~1.25–1.5 kg
• Dimensions: ~180 × 180 × 130 mm
• Fit: Cummins QSC, ISB, QSB, ISC engines

2. Function

• Power Transfer: Transmits rotational power from the engine crankshaft to the cooling fan
• Cooling System: Drives the radiator fan to draw air through the radiator, regulating engine temperature
• Belt Tension: Maintains proper tension for the serpentine belt, ensuring efficient operation

3. Installation & Location

• Mounting Position: Front of the engine, directly attached to the crankshaft pulley hub
• Orientation: Mounted on the front end of the crankshaft (engine front, near radiator)
• Installation:
  1. Align pulley holes with crankshaft hub bolts
  2. Torque bolts to OEM specification
  3. Install serpentine belt over 8 grooves
  4. Verify belt tension and alignment

4. Application

• Engine Models: Cummins 4B, 6B, 4BT, 6CT, 6BT, 6C, QSB, QSC, ISB, ISC
• Equipment: Trucks, excavators, generators, marine engines, construction machinery