Replacing Fan Belts on 12.7 Detriot

I had to take the fan off on my 99 to replace the belt.

 

Once you got the belt loose and sitting around the hub, just take the belt and slip it over the end of each fan blade. Easy. Changed hundreds of belts like that. There should be no reason to take a fan off to change belts.

 

You're.right, you shouldn't have to take the fan off,but on my 99 you will because the belt isn't long enough to slip over the fan blades. I have changed a lot of them myself on several different brands of engines & that was the first time I ever had to remove the fan.

 

Seriously? I've never come across that before.

 

Flipping a V-belt inside out will give you a little more room. I used to see many people take the damper off a 3126 to change the water pump belt. They'd think I was crazy when I told to just flip the belt inside out and it'll just fit over the damper, but it works. V-belts have nylon cords in the spine, the thicker V part is just rubber. Flip it over and put the thicker part on the outside and it frees up some room.

 

I did not know that. I'm gonna try that on the next PITA one I come across.

 

My 99 also has serpentine belts instead of v belts. One short one off the crank to the fan hub,one off the fan hub to the alternator & one off the accessory drive for the ac compressor.

 

there is certain old trucks that you do have to remove the fan like older kw with detroit also 99 volvo d12 need to do that on there is no worst belt to change than that at least kw gives you some room