What is the trick to Fan Removal?

[SmokinJoe]

OK, I have a wrench that is the right size now. When I try to take the nut off the belt assembly just turns. It seems almost impossible to get a screwdriver/pry bar in that tight area.



What is the trick to getting the engine fan off? Does anyone have any good tips? I have a theory that my fan clutch is defective, turning most all the time. If my theory is right my mileage should move up a LOT...



Thanks...

 

[**ICEMAN**]

i slid a piece of pipe over the wrench and gave it a quick hit with a hammer. counter clockwise,facing front of truck if im not mistaken.

 

[TSielski]

Give the fan nut a couple of raps with a drift or punch on the edge of the hex. Did this to mine, which had been on for over 5 years, since the truck was new, and it turned off real easily. Hopefully yours will do the same.

 

[Alaskdave]

A group of us did the Killer Dowel pin fix recently. The sharp blow is the key to breaking it loose. Leaning over the Radiator you want to turn the nut clockwise. It is a left hand thread so it will tend to tighten in normal running and not jump off and eat your Radiator. Our only hassle was with a Horton after market installation as the nut is sized differently than stock.

 

[Blackcloud]

Several weeks back I was at the NE Iowa Dyno Days and did a fan/no fan dyno run. The result was that there is no power increase/decrease by having/not having a fan. This was noted that the fan clutch was not locked up on either of my runs. The only difference you will notice is that the air noise under the hood is gone and you'll need to watch your coolant temps very closely especially while in town and at slower speeds. On the second dyno run my coolant temps went from 150 up to just over 215 in a matter of just 2 minutes on the dyno(and we did have a blower blowing air into the front of the truck,air temp was about 80).

 

[Big-D]

Blackcloud,



I find it interesting that you did not see a noticable difference in your testing on the Dyno without the fan. To turn the stock fan takes horsepower even though at higher rpm's the clutch does slip, reducing the "draw" of air which the fan moves. Guess I will just leave my fan on. Thanks for the post.

Dave

 

[drawson]

Fanless

On mine being fanless showed 19 HP more than with the fan. I have also seen an increase in milage of . 97 MPH over 5 months. I am running three electric fans and this 19 HP was with all three running.



I'm fanless to stay... ...