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supercub's avatar
supercub
Explorer
Apr 24, 2018

How to check brake pad on a Freightliner DP ?

How do you visually check the brake pads on a 2004 Freightliner diesel pusher Freightliner Chassis? Approximately what is the minimal thickness of pad thickness? I haven't looked, but I believe I have drum brakes, if they're discs, I know how to check those.
Thanks
  • FIRE UP wrote:
    supercub wrote:
    How do you visually check the brake pads on a 2004 Freightliner diesel pusher Freightliner Chassis? Approximately what is the minimal thickness of pad thickness? I haven't looked, but I believe I have drum brakes, if they're discs, I know how to check those.
    Thanks


    supercub,
    As has been stated, a simple lay-down and squirm around to the back-side of ANY of the wheels will reveal the EDGE of the brake SHOES. You don't say what make/model you have, only the chassis. About 98% of the Freightliner chassis coaches of that era are equipped with regular drum brakes. The few higher end ones MIGHT have been equipped with disc brakes.

    As I stated, you're only going to see the edge of the brake shoes by looking at them from behind the wheels. However, that will reveal at least one important factor. And that is, just how thick they are and, based on the mileage accumulated to that point of inspection, you MAY be able to tell ABOUT how long you may have left on them before any potential replacement.

    Our coach, an '04 Itasca Horizon 36GD with the C-7 330HP CAT, now has right at 83,000 miles on it and the shoes (drums) are between 5/8" and 3/4" thick. Based on that thickness, it's a pretty fair assumption that I'd be able to easily double that mileage, to around 160,000 before even thinking about replacing the shoes. But, lot's can happen in between now and that kind of mileage.

    Something we used on the FD in an everyday inspection of all our Fire truck brakes was a mirror and flashlight. You can get more and better angles of viewing using those, without actually worming around into positions to view the same angles. Good luck.
    Scott

    Ok, thanks, I just turned 60,000 miles on mine.
  • supercub wrote:
    How do you visually check the brake pads on a 2004 Freightliner diesel pusher Freightliner Chassis? Approximately what is the minimal thickness of pad thickness? I haven't looked, but I believe I have drum brakes, if they're discs, I know how to check those.
    Thanks


    supercub,
    As has been stated, a simple lay-down and squirm around to the back-side of ANY of the wheels will reveal the EDGE of the brake SHOES. You don't say what make/model you have, only the chassis. About 98% of the Freightliner chassis coaches of that era are equipped with regular drum brakes. The few higher end ones MIGHT have been equipped with disc brakes.

    As I stated, you're only going to see the edge of the brake shoes by looking at them from behind the wheels. However, that will reveal at least one important factor. And that is, just how thick they are and, based on the mileage accumulated to that point of inspection, you MAY be able to tell ABOUT how long you may have left on them before any potential replacement.

    Our coach, an '04 Itasca Horizon 36GD with the C-7 330HP CAT, now has right at 83,000 miles on it and the shoes (drums) are between 5/8" and 3/4" thick. Based on that thickness, it's a pretty fair assumption that I'd be able to easily double that mileage, to around 160,000 before even thinking about replacing the shoes. But, lot's can happen in between now and that kind of mileage.

    Something we used on the FD in an everyday inspection of all our Fire truck brakes was a mirror and flashlight. You can get more and better angles of viewing using those, without actually worming around into positions to view the same angles. Good luck.
    Scott
  • Not always true - need to know year and chassis

    Ava wrote:
    On a diesel pusher they should be disc brakes.
  • On a diesel pusher they should be disc brakes.
  • Ivylog's avatar
    Ivylog
    Explorer III
    On a drum it's a brake shoe and easy to see them inside the drum. Crawl underneath and take a look...they will probably 1/2" thick or more.
  • On the diesel pushers you crawl under and can clearly see the pads from the back. Commercial law is 1/4 inch min for shoes and 1/8 for disc . Just measure it. Of course you aren’t commercial .. It’s clearly visible and accessible , unlike a car you don’t remove the wheel. Looking at them is part of a drivers daily pre trip .you just need to crawl under and look
  • Good question I'd like to know the answer to also. I had a pair of front tires put on and the mechanic checked them for me and said they were fine (@ 75K) but I didn't see what he did.

    Interested and following...
  • The only way to check drum brakes is to pull the wheel off and then pull the drum off and measure the thickness of the shoe.