Jake on 3406 e

Discussion in 'Peterbilt Forum' started by cke, Mar 13, 2019.

  1. cke

    cke Road Train Member

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    Aug 4, 2013
    Colfax Wi
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    Little problem with my Jake brake. Works good when rpm’s are 1200 and below. Above 1200 it works part time. Any ideas
     
    Oxbow Thanks this.
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  3. fast1buzz

    fast1buzz Light Load Member

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    Feb 6, 2019
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    The solenoid valves in the head are failing. Had that happen to me dropping off the west side of Wolf Creek Pass a bit unnerveing I must say.
     
    Oxbow, Tombstone69 and cke Thank this.
  4. cke

    cke Road Train Member

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    Colfax Wi
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    How hard is it to replace these
     
  5. fast1buzz

    fast1buzz Light Load Member

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    Feb 6, 2019
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    They are not to big of a job just pull the very top rocker cover off they are just under it. My biggest problem was finding the right ones. That is not exactly the latest engine made.
     
    cke Thanks this.
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