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Thread: Thickness of original brake pads

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    Senior Member skyguy's Avatar
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    Thickness of original brake pads

    Can anyone tell me the thickness of the original brake pads, as supplied on a 2010 Bighorn 3670, Lippert Frame w/ 7000 lb axles and drum brakes?

    Checked my brakes pads today, there appears to be plenty of pad left, but that may depend on how much pad I started with

    Al S.

    Bighorn sighted at Pueblo SRA, CO - Spring, 2010

    Al and Rexann Schlafli
    'Jasper' and 'Louie' our Havanese fur boys
    2010 Bighorn 3670RL
    2001 F-350 SD 4WD w/

    ISSPRO Gauges: Tranny, EGT, Turbo Boost
    DP-Tuner
    : 40 tow, 80 econ, Decel, etc
    HOC #1300


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    Senior Member jnbhobe's Avatar
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    Re: Thickness of original brake pads

    They probably start out with 7/32 or 8/32. Are they bonded or rivited?? In Pa.they are legal till they are 2/32 thick.
    Patti & Jon Holbert
    PJ (Welsh Springer Spaniel rescue)
    Freckles (Welsh Springer Spaniel)RIP
    Erie,Pa.
    Heartland Owners Club #1025
    2009 BH 3370 #9E012371 Sailun S637's on 17.5 in Mod Wheels,8K Hubs, Mor-Ryde Independent Suspension, Disc Brakes, Reese Fifth Airborne, Level-up,LED Lights,awning on slideout and BU lights
    2015 F-350 Lariat Ultimate, DRW, 4X4, Max Tow,4.30 LS Gears,35K GCWR, CC, LB, Heated & AC seats
    2015 Explorer XLT Sport, 4X4, Dual Moon Roofs, 20" Wheels.
    08 Branson,Mi,Rallys
    09 Goshen,Pa,Mo Rallys
    10 East Coast,Pa,Oh,Nashville,NY,On,Illinois Rallys
    11 Cherokee,NJ,Pa,Goshen,Delaware,Illinois,NYRallys
    12 Virginia Beach,Pa,NY,Wi,Mi,Illinois,Minnesota Rallys
    13 Gettysburg, Goshen, NY, Illinois, Missouri, Iowa Rallys
    14 Urbanna, Va.,On,PA.,Illinois, NY. Rallys
    15 Goshen,NE Regional,NY, PA, Illinois, Rallys
    16 Lancaster, SE, SC,NC,NE Regionals, On, Va, PA, NY Rallys
    17 Va.,Goshen

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    Re: Thickness of original brake pads

    You probably started out with something under 1/2" of pad thickness. When you get close to 1/8th of an inch it's time to get them replaced. Disc systems don't care if the pad is gone or not. The pistons will continue pushing and pushing. I actually took a brake caliper system apart once and the inner side of the vented rotor was worn away completely and the piston was rubbing on the rotor spacers. When you get the work done unless you do it yourself here is some information. The brakes effectiveness depends on the pads and rotor mating perfectly. When that happens maximum friction is developed. Don't let anybody tell you that you don't need the rotors machined. They should always, always, always be machined. I even machined new rotors. Always get the best pad you can afford and they make different qualities. I used NAPA during my career as an automotive instructor. They seemed to keep up with changes and always had the top quality pad material that was available at the time. Remember that things do change and one size does not fit all. When doing brakes always get the best and do everything that is needed and more if necessary. If you need or want more information PM me and I'll try to help.
    I'm offering this info so you get things done correctly and that you maintain a safe unit.

    TeJay

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    Re: Thickness of original brake pads

    I have a set up in the shed with about 500 miles on them.
    I just went and measured the pad thickness and it is 3/16.

    Peace
    Dave
    Dave and Mary
    and C. J.
    2011 Bighorn 3585RL

    2013 RAM 3500, CC, DRW, Aisin
    Heartland Owners Club
    Member #1026

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    Senior Member jnbhobe's Avatar
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    Re: Thickness of original brake pads

    TeJay; He's asking about drum brakes!! But you gave good information on disc brakes. Daves information on his drum brakes is right on.
    Patti & Jon Holbert
    PJ (Welsh Springer Spaniel rescue)
    Freckles (Welsh Springer Spaniel)RIP
    Erie,Pa.
    Heartland Owners Club #1025
    2009 BH 3370 #9E012371 Sailun S637's on 17.5 in Mod Wheels,8K Hubs, Mor-Ryde Independent Suspension, Disc Brakes, Reese Fifth Airborne, Level-up,LED Lights,awning on slideout and BU lights
    2015 F-350 Lariat Ultimate, DRW, 4X4, Max Tow,4.30 LS Gears,35K GCWR, CC, LB, Heated & AC seats
    2015 Explorer XLT Sport, 4X4, Dual Moon Roofs, 20" Wheels.
    08 Branson,Mi,Rallys
    09 Goshen,Pa,Mo Rallys
    10 East Coast,Pa,Oh,Nashville,NY,On,Illinois Rallys
    11 Cherokee,NJ,Pa,Goshen,Delaware,Illinois,NYRallys
    12 Virginia Beach,Pa,NY,Wi,Mi,Illinois,Minnesota Rallys
    13 Gettysburg, Goshen, NY, Illinois, Missouri, Iowa Rallys
    14 Urbanna, Va.,On,PA.,Illinois, NY. Rallys
    15 Goshen,NE Regional,NY, PA, Illinois, Rallys
    16 Lancaster, SE, SC,NC,NE Regionals, On, Va, PA, NY Rallys
    17 Va.,Goshen

  6. Print this Post   #6
    Senior Member skyguy's Avatar
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    Re: Thickness of original brake pads

    Thanks all! This is always a great forum! If Dave is talking about DRUM brake pads, I'm ingreat shape, with about 1/8 inch to go. Looks like new pads next year...

    Al S.

    Bighorn sighted at Pueblo SRA, CO - Spring, 2010

    Al and Rexann Schlafli
    'Jasper' and 'Louie' our Havanese fur boys
    2010 Bighorn 3670RL
    2001 F-350 SD 4WD w/

    ISSPRO Gauges: Tranny, EGT, Turbo Boost
    DP-Tuner
    : 40 tow, 80 econ, Decel, etc
    HOC #1300


  7. Print this Post   #7
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    Re: Thickness of original brake pads

    A'm talkin bout drum brakes.

    Peace
    Dave
    Dave and Mary
    and C. J.
    2011 Bighorn 3585RL

    2013 RAM 3500, CC, DRW, Aisin
    Heartland Owners Club
    Member #1026

    Is club membership right for you? Click here to learn more

    Check out our Owner-written User Guides and Troubleshooting Guides

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    Senior Member - Past Moderator Ray LeTourneau's Avatar
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    Re: Thickness of original brake pads

    So to clarify, Drum brakes use shoes and they are near 1/4" thick when new. Mine are currently close to 3/16 but the thickness varies a teensy bit.
    Disc Brakes have pads and are 3/8" to 1/2" thick when new. Inner and outer pad wear may vary but both should be replaced at the same time.

    I'm not even sure if riveted shoes or pads are even made any more. At least I haven't seen any in the last few years that I can remember.

    Now I feel mush better.
    Ray & Lin
    R.I.P. Suzi
    R.I.P Bart


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    Re: Thickness of original brake pads

    Ray,
    You are correct. Disc pads tend to wear more on the inside because that's where the piston is located. The piston pushed the inner pad against the rotor and the sliding caliper pulls the outer pad against the outside of the rotor. Common sense says that the pressure would be the same but the inner pads almost always wear more. Therefore always check the inner pad for wear. ALWAYS replace all pads at least on each axle. If I were doing two axles on my TT I'd always do both axles at the same time. When replacing pads ALWAYS, ALWAYS machine the rotors. Don't let anybody tell you otherwise.
    Shoe or drum breaks will wear at a slight taper. The reason is because the shoes will pivot at the top. When that pivoting occurs the rotating drum will pull the shoe into the drum creating a wedging action that will result in a greater amount of pressure at the bottom which will cause more wear from bottom to top.
    It used to be that a lot of shoes and pads were riveted. We don't find that as much unless you get into the larger vehicles. I guess the adhesives have gotten better over the years or their may be some other reasons that I;m not aware of.

    TeJay

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    Re: Thickness of original brake pads

    The new brake shoes on the bighorn were not very thick- maybe 3/16"- but what I did notice was that the drum was made out of a very soft material, maybe cast iron, and they looked like they were wearing quicker than the shoes were. I am wondering if we can get better drums when they need replacement. Like when you buy auto. parts sometimes you have a choice of six month- one year- or lifetime warranted parts? Tom

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