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3406B jake brakes

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Jul 29, 2022.

Page 2 of 2
  1. Jul 30, 2022 #11
    mile marker 27

    mile marker 27 Road Train Member

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    I’d go to O’Reillys or Napa but I’m not convinced that they have(or would know what they have) a three position switch that’s, off, low and high(low&high). My truck wasn’t originally a jake equipped truck, as the hole the switch is in, was originally the either start. Truck originally had a 7FB 3406B. When I called Pete they asked for VIN, and I told them the scenario and they said, “well, we got a 4 terminal that might work”. $45. The four terminal they described has two terminals bridged together.
     
    mile marker 27, Jul 30, 2022
    mile marker 27, Jul 30, 2022
    #11
    Oxbow Thanks this.
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  3. Jul 30, 2022 #12
    Last Call

    Last Call Road Train Member

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    A new switch and your back in business ..
     
    Last Call, Jul 30, 2022
    Last Call, Jul 30, 2022
    #12
    Oxbow Thanks this.
  4. Jul 30, 2022 #13
    Last Call

    Last Call Road Train Member

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    Call Dirks tell them you got a B model and your wanting the Jake switch .. it's like 26.00 then you will have to bridge your power with a couple cross over wires .. if you go that route let me know I will dig out my wiring diagram and post it for ya.. it's easy to do
     
    Last Call, Jul 30, 2022
    Last Call, Jul 30, 2022
    #13
    Oxbow Thanks this.
  5. Jul 30, 2022 #14
    Oxbow

    Oxbow Road Train Member

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    My wiring is intact, but I have no 3/6 switch as the former owner used that spot for the lift axle, so I just have them both going to a four pole Pete switch with power source to the top two poles, and the Jake wires on the bottom two. I would probably not use just one stage much anyway.
     
    Oxbow, Jul 30, 2022
    Oxbow, Jul 30, 2022
    #14
    mile marker 27 and Last Call Thank this.
  7. Jul 30, 2022 #15
    Last Call

    Last Call Road Train Member

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    I couldn't tell you the last time I staged 1 a jake.. it's either all on.or it's off .. Besides the Jake's a.on a B model are lack luster anyhow you sure don't have to worry about getting tossed through the windshield when you flip em.on .. even when their set correctly
    Thank God for a brake saver
     
    Last edited by a moderator: Jul 30, 2022
    Last Call, Jul 30, 2022
    Last Call, Jul 30, 2022
    #15
    Oxbow Thanks this.
  8. Jul 30, 2022 #16
    mile marker 27

    mile marker 27 Road Train Member

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    Mine are the 346 jakes. Wasn’t there a 349?
     
    mile marker 27, Jul 30, 2022
    mile marker 27, Jul 30, 2022
    #16
    Oxbow and Last Call Thank this.
  9. Jul 30, 2022 #17
    Last Call

    Last Call Road Train Member

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    Yes the 349's are alittle better.. don't get me wrong their not horrible.. just alittle over rated
     
    Last Call, Jul 30, 2022
    Last Call, Jul 30, 2022
    #17
    Oxbow and mile marker 27 Thank this.
  10. Jul 30, 2022 #18
    mile marker 27

    mile marker 27 Road Train Member

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    Is there any way I can solder both jake wires together and make one wire with a spade, that plugs on the back of the switch? If so I can just use an “on/off” switch. Or make a jumper wire from one spade terminal at one jake housing to the other? I’m like you guys, prolly use all 6 or nothing.
     
    mile marker 27, Jul 30, 2022
    mile marker 27, Jul 30, 2022
    #18
    Last Call and Oxbow Thank this.
  11. Jul 30, 2022 #19
    Oxbow

    Oxbow Road Train Member

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    That's essentially what I did.
     
    Oxbow, Jul 30, 2022
    Oxbow, Jul 30, 2022
    #19
    mile marker 27 and Last Call Thank this.
  12. Jul 30, 2022 #20
    Last Call

    Last Call Road Train Member

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    Just solder the 2 wires together at the switch and used simple on /off switch ..power on 1 terminal and you 2 wires on the other terminal.. pretty much like @Oxbow did with his
     
    Last Call, Jul 30, 2022
    Last Call, Jul 30, 2022
    #20
    mile marker 27 and Oxbow Thank this.
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