379 hood isolators

Discussion in 'Peterbilt Forum' started by AB Slinger, Nov 12, 2012.

  1. 1johnb

    1johnb Medium Load Member

    Jun 13, 2012
    New Paris Ohio
    Pete recommends silicone grease I use sil glide and it works great. My local carquest stocks it.
  2. CG1

    CG1 Light Load Member

    Aug 22, 2012
    Auburn, NE
    I use the toe end of my old socks, cut about 4 inches off the toe and slip them over. Can also use the elastic leg part on the other rubbers to keep them quiet also. No grease, no mess!!! PS: I roll them around ever so often to keep them lose and quiet.
  3. chnco7088

    chnco7088 Bobtail Member

    Feb 3, 2013
    A freind of mine used silk dress socks. Put one on each rubber block. Works like a charm.
  4. Klleetrucking

    Klleetrucking Light Load Member

    Dec 11, 2010
    ^^^^^^ YEP^^^^^^

    No lie about gettin your jacket in it though
  5. TonyUFN

    TonyUFN Bobtail Member

    Oct 22, 2008
    Gilmer, TX
    I took a pair of tube socks, but since the isolators were worn so bad I had to double them over once.
    Worked perfect! Even the slightest bumpy road would have them thumping and squeaking before.
    Now... near silence from the cowl/firewall. Now on to finding the other squeaks & rattles :)

    I don't care if they only last a few months... the quick fix is worth it. But I'm still going to check with the stealer on replacement parts for future reference.
  6. Agtrucker

    Agtrucker Light Load Member

    Dec 14, 2011
    What kind of noise does this issue tend to make? Since they are of similar design, are these isolators also on 367's?
  7. bowtieboy77

    bowtieboy77 Light Load Member

    Aug 16, 2013
    Southern, Ontario
    Ok if you want to use the same stuff peterbuilt techs use its eaton fuller o-ring lube its a clear very thick lubricant. I know as I used to be a mechanic at peterbuilt.
  8. Passin Thru

    Passin Thru Road Train Member

    Mar 8, 2007
    Use Teflon tape and run it along the edges where the hood and cab meet as it will eventually wear thru the fiberglas. Also you can use any Parke O-ring lube and try to keep it off your hands as it's a thick-sticky grease.
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