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6.7L Cummins Cooling System – Cooling System Diagnostics – Belt and Belt Tensioner

A worn/incorrect belt, belt tensioner, or misaligned pulley can cause:
• Belt slip
• Belt jump or “walk off”
• Noise
• Belt breaks and shredding
• Component bearing seizure.
This can reduce water pump and/or cooling fan rotation speeds, resulting in an engine overheat condition. Refer
to Procedure 008-002 in Section 8. Refer to Procedure 008-087 in Section 8.