Do brake chambers have brake fluid in them?

Discussion in 'Trucking Schools and CDL Training Forum' started by Newtotrucking2020, Dec 5, 2019.

  1. Newtotrucking2020

    Newtotrucking2020 Bobtail Member

    25
    4
    Oct 8, 2019
    0
    When doing the pretrip would you say no audible leak and no brake fluid leaking from brake chamber or just say audible?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. LDLWells

    LDLWells Heavy Load Member

    782
    1,209
    Jan 14, 2019
    0
    It's only air in that chamber. Fluid breaks down, air doesn't
     
    homeskillet and Newtotrucking2020 Thank this.
  4. snowwy

    snowwy Road Train Member

    18,588
    10,959
    Jul 6, 2009
    0
    The only fluid you'll have in them chambers is water splashing from a wet road.

    The only brake fluid semi's have is the clutch.
     
    Newtotrucking2020 Thanks this.
  5. x1Heavy

    x1Heavy Road Train Member

    34,024
    41,499
    Mar 5, 2016
    White County, Arkansas
    0
    Fluid will burn at the temperatures that we do braking downgrade in mountains. You cannot find fluid strong enough to endure that kind of condition without catching fire. You also cannot use fluid to apply the required force to generate that kind of braking power.

    What does?

    Air. Compressed air, and a hell of alot of it.
     
    Bean Jr. and Newtotrucking2020 Thank this.
  6. Happily Retired

    Happily Retired Road Train Member

    9,085
    17,686
    Apr 16, 2014
    high plains colorado
    0
    OMG, you have GOT to be kidding? They're new all right and I thought I heard it all.:biggrin_25513:
     
    Dumdriver, FlaSwampRat and Bean Jr. Thank this.
  7. buddyd157

    buddyd157 Road Train Member

    11,087
    25,677
    May 25, 2017
    under a shade tree
    0
    i realize that you have a question, and asked it here, it's better to ask, then to either assume, or make mistakes at the DMV test site.

    however, if you are in any CDL school right now, that question would have been better asked to your instructor(s). in fact, your instructor should have told you it's an "air system", which would mean, no fluids of any kind in there.

    on an outside "chance" your truck has a bad air-compressor, there "might be" a trace of oil seeping out, but in all my years, i have never seen that...

    so " NO audible leak" would be all that you'd be saying...
     
  8. Happily Retired

    Happily Retired Road Train Member

    9,085
    17,686
    Apr 16, 2014
    high plains colorado
    0
    I'd make a terrible instructor, there would be an even bigger driver shortage. BRAKE FLUID? GET OUT:biggrin_25516:
     
  9. buddyd157

    buddyd157 Road Train Member

    11,087
    25,677
    May 25, 2017
    under a shade tree
    0
    but you know something.??

    it would not surprise me, if someone had a grudge against a company, and did pour "some sort of fluids", into the glad hands, and reconnect them. just like the old penny trick into the grommets.
     
  10. bavarian

    bavarian Medium Load Member

    672
    675
    Feb 13, 2014
    Winnipeg
    0

    Heavy, I do respect your continued contribution to this forum.
    But this time, you're absolute wrong.
    The air itself does not produce any friction to slow down the vehicle, it is the brake liner. And for the brake liner, there is no difference what made the necessary movement to turn the cam and press it against the drum. It could be as well any hydraulic system.
    A bydraulic system provides even more than a 140 psi of pressure.
    The reason, why air is used, it's my assumption, air doesn't change its viscosity in cold temperatures whereas oil does. The brake system is not a continuous flow system and would leave cold oil in the lines, making it slow to react in cold conditions.
     
    FlaSwampRat Thanks this.
  11. Shawn2130

    Shawn2130 Heavy Load Member

    744
    1,460
    Sep 20, 2015
    Ontario
    0
    Also, any hydraulic system would need to be bled if they were disconnected anywhere or a break in the lines somewhere.

    Won’t be fun being under the truck in -20°c to -40°c weather laying in snow bleeding every wheel on the truck and trailer that got air in the hydraulic system.

    Air is a way better and more safer system to reliably work all the time in combinations vehicles.

    Every truck that has hydraulic brakes and pulls a trailer, the trailer is either electric brakes or electric over hydraulic.
     
    Just passing by and FlaSwampRat Thank this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  • Draft saved Draft deleted