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

A worn/incorrect belt, belt tensioner, or misaligned pulley can cause:
โ€ข Belt slip
โ€ข Belt jump or “walk off”
โ€ข Noise
โ€ข Belt breaks and shredding
โ€ข 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.