Noise
Fan noise is sometimes evident when the following normal conditions exist
- The clutch is engaged for maximum cooling.
- The engine has been running for 15-60 seconds after start-up. After this time, the clutch can redistribute the silicone fluid back to the normal disengaged operating conditions.
Scheme 5
Fan noise or an excessive roar may occur when the following conditions exist
- The engine speed is 2,500 RPM or higher.
- The clutch assembly is locked up due to an internal failure.
Rotate the fan (1).
With the engine off, replace the clutch (2) if the following conditions exist
- The fan cannot be rotated by hand.
- The fan produces a rough, grating feel as it turns. Refer to «Fan Clutch Replacement»(ref-197849-S33585638192005101300000) .