3406E Jake Brake

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Newguy333, Mar 5, 2018.

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  1. Mar 5, 2018 #1
    Newguy333

    Newguy333 Bobtail Member

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    3406e Caterpillar engine rear Jake brake does not change when activated manually. Front Jake brake operates normally. middle Jake brake pops/sounds whimpy. Any advice would be welcomed
     
    Newguy333, Mar 5, 2018
    Newguy333, Mar 5, 2018
    #1
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  3. Mar 5, 2018 #2
    spsauerland

    spsauerland Road Train Member

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    Sounds like it's time for a tune-up kit in your engine brakes.
     
    spsauerland, Mar 5, 2018
    spsauerland, Mar 5, 2018
    #2
    Oxbow, SAR and pushbroom Thank this.
  4. Mar 6, 2018 #3
    A5¢

    A5¢ Medium Load Member

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    When was the last overhead done?
     
    A5¢, Mar 6, 2018
    A5¢, Mar 6, 2018
    #3
  6. Mar 7, 2018 #5
    Newguy333

    Newguy333 Bobtail Member

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    Turn up kit was installed last week new O-rings Springs found a couple of bad Springs. Ran the overhead today engine runs smoothly but when you activate the Jake's manually it does not sound right. The front one sounds like it's only hitting on one of the two cylinders, and the middle one sounds different, back 1 shows no difference when they solenoid is activated mechanically
     
    Newguy333, Mar 7, 2018
    Newguy333, Mar 7, 2018
    #5
  8. Mar 7, 2018 #5
    Newguy333

    Newguy333 Bobtail Member

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    Probably need to take that back Jake off and apart and see if I missed something...... I did also I notice with the front Jake brake solenoid activated a lot of oil came out where the slave cylinder pushes in at the front one number one cylinder but number two didn't have a lot of oil coming out of it... the back one also did the same thing but to no effect. Jake brake did not come on on the back one.
     
    Newguy333, Mar 7, 2018
    Newguy333, Mar 7, 2018
    #5
  9. Mar 7, 2018 #6
    spsauerland

    spsauerland Road Train Member

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    Which model Jake you have and what is first three of your Serial number. On your hold down bolts, is only one a twelve point?
     
    spsauerland, Mar 7, 2018
    spsauerland, Mar 7, 2018
    #6
    AModelCat, SAR and Oxbow Thank this.
  10. Mar 7, 2018 #7
    Newguy333

    Newguy333 Bobtail Member

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    340c, 2sw,4 12 point bolts, one big nut
     
    Newguy333, Mar 7, 2018
    Newguy333, Mar 7, 2018
    #7
    Oxbow Thanks this.
  11. Mar 7, 2018 #8
    Newguy333

    Newguy333 Bobtail Member

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    2ws
     
    Newguy333, Mar 7, 2018
    Newguy333, Mar 7, 2018
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    Oxbow Thanks this.
  12. Mar 7, 2018 #9
    spsauerland

    spsauerland Road Train Member

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    Did you inspect slave valves? Did you let oil purge for at least 30 sec when adjusting Jake lash?
     
    spsauerland, Mar 7, 2018
    spsauerland, Mar 7, 2018
    #9
    SAR and Oxbow Thank this.
  13. Mar 7, 2018 #10
    Newguy333

    Newguy333 Bobtail Member

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    I will relook at the slave valves and yes I did let the oil Purge while adjusting the Lash...
     
    Newguy333, Mar 7, 2018
    Newguy333, Mar 7, 2018
    #10
    Oxbow Thanks this.
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