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Peterbilt 379 Fan clutch Squeak when engaging.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Don379, Apr 29, 2021.

Page 2 of 5
  1. Apr 30, 2021 #11
    Don379

    Don379 Heavy Load Member

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    belt only goes to 3 things. i made a childish diagram IMG_4586 (1).jpg
     
    Don379, Apr 30, 2021
    Don379, Apr 30, 2021
    #11
    Rideandrepair and God prefers Diesels Thank this.
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  3. Apr 30, 2021 #12
    God prefers Diesels

    God prefers Diesels Road Train Member

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    Can you have your buddy send you a pic of how his is routed? Or are they the same?

    Mine doesn't squeak, and has new everything, but I can still spin the fan pulley in the belt going one direction, just like you.
     
    God prefers Diesels, Apr 30, 2021
    God prefers Diesels, Apr 30, 2021
    #12
    Dino soar, Rideandrepair and Don379 Thank this.
  4. Apr 30, 2021 #13
    God prefers Diesels

    God prefers Diesels Road Train Member

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    Check this out:

    Screenshot_20210430-184130_Firefox.jpg
     
    God prefers Diesels, Apr 30, 2021
    God prefers Diesels, Apr 30, 2021
    #13
    Rideandrepair and Don379 Thank this.
  5. Apr 30, 2021 #14
    Don379

    Don379 Heavy Load Member

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    dam, wth. so thats routed like it should. im at a loss then. I even soaked that hub pulley with wd40 to see if for a split second the squeek would happen and instead slip. It still squeeked up there anyway.I hate gremlins man
     
    Don379, Apr 30, 2021
    Don379, Apr 30, 2021
    #14
    Rideandrepair and God prefers Diesels Thank this.
  7. Apr 30, 2021 #15
    God prefers Diesels

    God prefers Diesels Road Train Member

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    Man, when you saw all that crap in those grooves, I'll bet you thought you nailed it. What a F'n letdown.
     
    God prefers Diesels, Apr 30, 2021
    God prefers Diesels, Apr 30, 2021
    #15
    Dino soar, Rideandrepair and Don379 Thank this.
  8. Apr 30, 2021 #16
    Don379

    Don379 Heavy Load Member

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    you tried to call the ####### earlier but his fun going into voicemail
     
    Don379, Apr 30, 2021
    Don379, Apr 30, 2021
    #16
    Rideandrepair Thanks this.
  9. Apr 30, 2021 #17
    Don379

    Don379 Heavy Load Member

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    oh i was like this is it!!! then when i hit that fan switch, i was like Mother f..ker!
     
    Don379, Apr 30, 2021
    Don379, Apr 30, 2021
    #17
    Dino soar, Rideandrepair and God prefers Diesels Thank this.
  10. Apr 30, 2021 #18
    God prefers Diesels

    God prefers Diesels Road Train Member

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    Can you get a can of belt dressing and hit the belt to see if the tone changes? Could probably do it with the fan off so it doesn't blow everywhere, and then kick it on.

    Also, is there any possibility it's the A/C belt, instead of the serpentine?
     
    God prefers Diesels, Apr 30, 2021
    God prefers Diesels, Apr 30, 2021
    #18
    Dino soar, Rideandrepair and Don379 Thank this.
  11. Apr 30, 2021 #19
    Don379

    Don379 Heavy Load Member

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    yeah im gonna pick up a can of that crap on sunday and try it, just to trouble shoot. Tomorrow i have a bunch of stuff to do. At the same time when i do that, i will loosen the a/c v belt all the way up to where its not touching to rule that out as well. I cant take it off alll the way becuase i have to remove fan to do that. I will definatley report back
     
    Don379, Apr 30, 2021
    Don379, Apr 30, 2021
    #19
    Rideandrepair and God prefers Diesels Thank this.
  12. Apr 30, 2021 #20
    Goodysnap

    Goodysnap Road Train Member

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    What brand belt is that? Gates?

    Have you tried an OE belt? or others....
     
    Goodysnap, Apr 30, 2021
    Goodysnap, Apr 30, 2021
    #20
    Rideandrepair Thanks this.
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