Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 12, 2025 ...

Engine Radiator Cooling Fans

June 29, 2012, 08:02:03 am

Hello All;
      During my radiator cleaning exercise (99 295 side radiator), I noticed something strange about the front fan blade. It appeared different than the rear fan blade. Upon closer inspection, I found the front fan blade had been installed backwards, at some time. The fan was pulling only about 20% of what it should have. I corrected the problem by removing the blade from the motor and installing it properly, resulting in a big difference in air flow around the engine area.
      With that said, I was not having any overheating problems, even pulling some long steep grades in the past. This may be something to look at when cleaning your radiator, or if you are having overheating issues.     
    This is another testament on how robust the radiator design is.
    Thank you Foretravel
    FWIW

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Re: Engine Radiator Cooling Fans

Reply #1 – June 29, 2012, 08:18:13 am

thanks Gary for the tip. All radiators should suck in toward the engine correct? So if one of the cooling set of fins (radiator) blows out (away from the engine compartment), the fan's blades are most likely set in the wrong direction correct?

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Re: Engine Radiator Cooling Fans

Reply #2 – June 29, 2012, 12:22:47 pm

The fan blade being backwards does not blow outwards,,just is inefficient as it is not digging into the air with the leading edge of the blade.

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Re: Engine Radiator Cooling Fans

Reply #3 – June 29, 2012, 02:42:16 pm

Yes, air flow on any side radiator is air IN from outside and exhaust into the engine compartment.

Rear radiator flow is air IN in front (front of coach) and out the back (back of coach).

And the CAC (Charge Air Cooler) is in front (first in the air flow) of the radiator.

Brett

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