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Automatic slack adjusters?

Discussion in 'Schneider' started by Rocknroller4, Jul 13, 2017.

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  1. Jul 13, 2017 #1
    Rocknroller4

    Rocknroller4 Road Train Member

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    Are these standard on automatic trucks these days? At CDL school we had older 10-speed trucks and did a lot of brake checking and look at the trailer. Just curious if SNI uses them? I know they have some autos in their fleet.
     
    Last edited: Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    #1
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  3. Jul 13, 2017 #2
    ChaoSS

    ChaoSS Road Train Member

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    They are standard on all trucks. The transmission has nothing to do with the brakes.

    You still need to check your brakes ensure the slack adjusters are working properly.
     
    ChaoSS, Jul 13, 2017
    ChaoSS, Jul 13, 2017
    #2
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  4. Jul 13, 2017 #3
    Rocknroller4

    Rocknroller4 Road Train Member

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    I would still check brakes but the State CDL manual says automatic slack adjusters should not be done manually and only be done by trained personnel (if they needed adjusting) and manual adjusters can be adjusted when necessary by the trucker. Wasn't sure if auto adjusters were a standard thing these days on all trucks? or do some of the newer ones still use manual adjusters? does that make sense?
     
    Last edited: Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    #3
  5. Jul 13, 2017 #4
    ChaoSS

    ChaoSS Road Train Member

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    They should all be automatic. Might find some old trailers with manual slacks. You can adjust them, but don't do it just because. With manuals, you can just adjust all 4 in and back them back out, check em to be sure, and go on your way. With autos you should check to be sure that it's really out of adjustment, pump the brakes to try to get it to adjust itself (they adjust themselves with full brake application, if that isn't happening then they aren't adjusting themselves) then adjust as needed. Write it up, if it isn't working it needs to be replaced.
     
    ChaoSS, Jul 13, 2017
    ChaoSS, Jul 13, 2017
    #4
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  7. Jul 13, 2017 #5
    uncleal13

    uncleal13 Road Train Member

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    I haven't seen a manual slack on a trailer since about 1994 personally.
     
    uncleal13, Jul 13, 2017
    uncleal13, Jul 13, 2017
    #5
  8. Jul 13, 2017 #6
    AModelCat

    AModelCat Road Train Member

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    Manual slacks on trucks haven't been common in probably 20+ years. Autos still need to be checked though. Only reason an auto slack will ever require adjustment is if it has failed.
     
    AModelCat, Jul 13, 2017
    AModelCat, Jul 13, 2017
    #6
  9. Jul 13, 2017 #7
    Rocknroller4

    Rocknroller4 Road Train Member

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    Well I see other truckers or videos where they take that wrench and adjust the nut and hit the brake to listen?
     
    Rocknroller4, Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    #7
  10. Jul 13, 2017 #8
    ChaoSS

    ChaoSS Road Train Member

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    Don't hit the brake. Do it right and measure it.
     
    ChaoSS, Jul 13, 2017
    ChaoSS, Jul 13, 2017
    #8
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  11. Jul 13, 2017 #9
    Rocknroller4

    Rocknroller4 Road Train Member

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    Alrighty appreciate the help.
     
    Rocknroller4, Jul 13, 2017
    Rocknroller4, Jul 13, 2017
    #9
  12. Jul 13, 2017 #10
    dca

    dca Road Train Member

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    if it failed, will it get replaced?
     
    dca, Jul 13, 2017
    dca, Jul 13, 2017
    #10
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