Maxxforce 13 Engine Fan Conversion

Wa wa what???? I’ve read a lot of bad things about maxforce engines but this is a new one on me!!!

I’m all ears?

 

Yes, another reason to hate them. The fan hub is gear driven off the front of the engine and the outer bearing is lubricated by main engine oil pressure. The shaft can fail and cause it walk out of the hub, taking the rad with it sometimes, which opens up the oil seal and full oil pressure is spraying all over the place!

 

Wow!!! $10 grand to fix though?

 

Not for the fix, for the conversion. Fix would be less than half that as long as the rad wasn't damaged. There are actually two fan hub options, low and high mount. The high mount is a conventional belt driven air operated clutch style. Since it the front structure of the engine is slightly different with that option, several front cover, water housing parts have to be changed which is why it is so expensive.

 

Ok thanks,

Note to self.......

 

Is there any tell signs that the fan needs to be replaced before this all happens?

 

Just seal seepage before a bearing failure from excessive radial play. It is normal to have a couple mm of lateral end play though if you ever grab it and pull it in and out to check for play.