3629256 Fan Belt V-belt for Cummins KTA50 K50 KTA50-G3

3629256 Fan Belt (V-Belt) – Cummins KTA50/K50/KTA50-G3 Specifications

✅ Fitment & Compatibility

Engine Models:

• Cummins KTA50 (Industrial/Marine)

• Cummins K50 (Older variants)

• Cummins KTA50-G3 (Generator sets)

Common Applications:

• Mining equipment (haul trucks, drills)

• Marine propulsion (tugboats, ferries)

• Power generation (750-1500kW gensets)

🔧 Technical Specifications

⚠️ Critical Notes

1. Drive System Components:

   • Fits 13.5″ sheaves with 38° groove angle

   • Must replace matched sets (never mix old/new belts)

2. Alignment Requirements:

   • Max 1/32″ per foot sheave misalignment

   • Use laser alignment tool for precision

3. Failure Signs:

   • Cracking: >3 cracks per inch = replacement

   • Glazing: Shiny surface indicates slippage

   • Material Loss: >1/8″ depth wear = sheave damage

🔄 Cross-Reference Numbers

🔧 Installation & Maintenance

1. Tensioning Procedure:

   • Deflection: 1/64″ per inch of span

   • Example: For 48″ span → 3/4″ deflection at 160N force

2. Break-in Protocol:

   • Run at 50% load for 30 mins

   • Retension after first 8 operating hours

3. Sheave Inspection:

   • Check for:

     • Groove wear >0.015″

     • Concentricity runout >0.020″

❌ Common Mistakes

• Overtightening (causes bearing failures)

• Mixing belt types (classical vs. narrow profile)

• Ignoring sheave wear (reduces belt life by 70%)

📊 Performance Data

🆙 Upgrade Options

1. Notched Belt (3629256N):

   • 15% better heat dissipation

   • For high-vibration applications

2. Oil-Resistant Version (3629256OR):

   • Hydraulic fluid resistant compound

   • For leak-prone systems

❓ Need More Info?

• Sheave measurement guide?

• Laser alignment procedure?

• Tension gauge recommendations?

This belt drives critical cooling systems – improper tension causes 43% of KTA50 overheating incidents! 🌡️🔧