Rear Drum heat

Discussion in 'Mech Tech' started by MorkC68, Apr 13, 2025.

  1. MorkC68

    MorkC68 Administrator

    How hot to touch should the rear drums get after a 20 mile journey of uphill, downhill (around 15 miles) with 5 miles dual carriageway driving?

    The rear drums on Major got hot to touch Friday but not so you couldn't touch them.

    I cooked them last year and want to be sure I dont do it again!
     
  2. Zed

    Zed Gradually getting grumpier

    Not something I've ever checked other than once when the smell of overcooked brake linings wafted in the window. They were sizzling hot, I didn't touch, I spat.
    If you're concerned, back off the adjusters a click or two and see if it's any different.
     
    PanZer and MorkC68 like this.
  3. Undo a bleed nipple on a rear cylinder if fluid shoots out instead of dribbling then something is holding the system under pressure
     
    PanZer, Zed, MorkC68 and 1 other person like this.
  4. davidoft

    davidoft Sponsor

    They will get pretty hot after that sort of driving
     
    MorkC68 likes this.
  5. I have no idea what you mean by uphill or downhill -
    it could be a leisurely tour for seniors in the low mountain range with somehow warm brakes - or sporty serpentines in the high Alps or Pyrenees with glowing brakes.. ;)

    Yes, brakes can get hot. Also use the engine's braking power by downshifting in the mountains.

    However, due to load distribution, braking is more achieved through the front brakes – they should also be hot/hotter by then.
    If not, something is wrong – check on a straight road whether the rear gets warm/hot without much braking -or at a brake test stand.
    The cause is often incorrect assembly, wrong parts, incorrect settings - or a broken load change distributor for the rear axle.

    regards,
     
    Last edited: Apr 14, 2025
    PanZer likes this.
  6. For me it was a sticking hand brake. It took a while to locate the promblem, but I found that if I jacked it up when i discovered it was hot, the wheel wouldn’t rotate properly. I then waggled the cable just behind the drum and it freed itself. It was the release spring inside the drum that was faulty.
     
    Lasty and MorkC68 like this.
  7. Faust

    Faust Supporter

    Nothing wrong if you ask me Mark if you can still touch them all be it hot .It's dry and warm too at the moment .
     
    MorkC68 likes this.
  8. MorkC68

    MorkC68 Administrator

    Thanks all!!

    I'll go out in Major over the coming days and try a route with less hills etc and more flat driving etc.

    It may be me being over cautious :D
     
    PanZer likes this.
  9. MorkC68

    MorkC68 Administrator

    Uphill / downhill relates to the route to / from the MOT tester - it being uphill then downhill, back uphill then downhill or better known as The Derbyshire Dales :D
     
    Faust, matty and Chrisd like this.
  10. Chrisd

    Chrisd Supporter

    In paragliding (which I do) we find we have to translate the word 'hill' when refering to our hills into 'pimple' for those who live next to proper hills, like the Alps! Our European friends often look on astounded at what we fly from:p

    "Up and down dale"...hmmms incline maybe.....I now run and hide from the indignation coming my way:shock:
     
    Last edited: Apr 14, 2025
    MorkC68 likes this.
  11. MorkC68

    MorkC68 Administrator

    :lol: I agree our hills are like pimples in comparison!!
     
    Chrisd likes this.
  12. mikedjames

    mikedjames Supporter

    They are just inspecting the brakes on the train, came down from 2200m ASL..on a 7%gradient. 20250415_110736.jpg
     
    Last edited: Apr 15, 2025
    Chrisd, redgaz and MorkC68 like this.

Share This Page