HELP! How do I get the fan belt off? - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 09-21-2011, 12:09 PM   #1 (permalink)
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HELP! How do I get the fan belt off?

How do I get the fan belt off? I have a 2 pulley tensioner and I have found the square area for a 1/2" breaker bar but the clearance is nearly zero and I cannot feel it very well. What do I need to do or is there a special tool?
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Old 09-21-2011, 04:09 PM   #2 (permalink)
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If you only want to get it off, cut it!

I worked mine off the alternator pulley. Took a little work, but it came. You could also remove the alternator and the belt will be loose.

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Old 09-21-2011, 04:19 PM   #3 (permalink)
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1. unhook the battery leads
2. remove the three alternator bolts
3. tilt alternator forward
4. Remove belt


- reverse to install.
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Old 09-21-2011, 05:10 PM   #4 (permalink)
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Can you actually get the belt out and around the fan and put a new one back in that way? It looks very difficult......
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Old 09-21-2011, 06:14 PM   #5 (permalink)
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Quote:
Originally Posted by Larryect View Post
Can you actually get the belt out and around the fan and put a new one back in that way? It looks very difficult......
A single alternator belt does not have to be worked around the fan. The fan is driven off the back (flat side) of the belt. The Alternator, AC compressor and Power steering pump are the only accessories driven from the grooved side.
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HELP!  How do I get the fan belt off?-serpentine-belt-diagram.jpg  
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Old 09-21-2011, 07:36 PM   #6 (permalink)
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Johnmart, that's good to know - thanks. I was really dreading tackling that job. Now I might try it.
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Old 09-21-2011, 08:00 PM   #7 (permalink)
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Oh, but do set aside a lot of free time and patience...as rcgreg indicates alternator loosing and tilt was my method although I didn't disconnect the battery, was just VERY careful to not expose the + lead to ground. Removed old belt...I didn't cut it and then nursed new one from above, below, above...much of this...@#%^* and now its done with a couple of "short" cranks to avoid engine starting and careful inspection to make sure it was centered on all pulleys. Done deal and hope its good for another 110k miles.
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Old 09-21-2011, 08:45 PM   #8 (permalink)
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You don't have to take the alternator off. There is a catch on the idler/tensioner assembly below the alternator and all you have to do is have someone stand on passenger side of truck and grab the belt below the alternator pulley and pull on the belt while someone else reaches behind that idler/tensioner and flips that lever. Then the belt will be loose, once you get the new belt in position just get on the passenger side and pull on the belt and that catch will release and the belt will be under tension. I think I posted a picture of that catch one time and will see if I can find it.
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Old 09-21-2011, 08:52 PM   #9 (permalink)
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You can see that little catch right above the AC clutch in this picture right in front of the ribbed pulley.
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Old 09-21-2011, 09:27 PM   #10 (permalink)
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I used a long handled 1/2" ratchet in the square drive hole and moved the tentioner .It took me about 15 minutes to change the belt.
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Old 09-21-2011, 10:27 PM   #11 (permalink)
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Thanks for all the tips. Is the 1/2 inch square drive hole in the center of wheel 8 above in the diagram?
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Old 09-22-2011, 06:11 AM   #12 (permalink)
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Did ya read what foncop said?
If you stand with your belly on the passenger side fender & look down by the pulleys, there is a stainless steel tab about one inch by half an inch, with your left hand pull the belt & with your right thumb push that tab in, it will sit in a notch holding the tentioner open.
To release just pull the belt again & the tab will pop free.
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Old 09-22-2011, 10:11 AM   #13 (permalink)
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Yep, I read what he said - use 2 people - really appreciate it and the picture. Not sure I am seeing the catch or will know exactly how to flip it on the first try. It looks like it might be the piece below the AC clutch almost touching the ribbed pully. But, not sure because he said above the AC clutch. Sorry but I don't see anything above the AC clutch.

I thought using more leverage with a 1/2 breaker bar might allow for a bit more time to engage the catch. Anyway, it's good to try to understand all the options....
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Old 09-22-2011, 04:29 PM   #14 (permalink)
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I believe that picture is from underneath the truck, it's the little thing in the picture between the clutch and the ribbed pulley. Also it sounds like it can be done with one person if you do it right.
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Old 09-22-2011, 05:12 PM   #15 (permalink)
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Ah-ha, That helps clear things up. I will have to look as soon as I get a chance. It will probably be a while before I can get to it. But thanks for the input.

I hope Always_Workin got what he was looking for. I certainly didn't mean to take over the thread. Just something I have been looking at too.
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