park brake stuck after storage

  • 09/15/2020 3:16 PM
    Message # 9238049
    Anonymous

    after pandemic, discovery 40E parking brake wont release, even with >100lbs in both systems. reg brakes normal. drop test normal. no visible release cable for the spring brakes. HELP!

  • 09/16/2020 2:29 PM
    Reply # 9240881 on 9238049
    Bill & Laura Johnson (Administrator)

    Wish I had a solid answer, but I suggest you call the tech support team in Decatur.  Please be aware that the staff is very short handed at this time due to events around Covid so response can be very slow. 260 728-4773.

    Possibly a faster answer at Freightliner 800 385-4357 they answer 24/7

    Last modified: 09/16/2020 2:32 PM | Bill & Laura Johnson (Administrator)
  • 09/17/2020 12:04 PM
    Reply # 9243401 on 9238049
    Anonymous

    I have encountered this problem a couple of times.  If you want to try to fix it yourself without taking it to the shop you can try the following:

    ...The cable that the parking brake runs in is probably corroded.  Buy a good quality penetrating fluid and spray the enclosure that the parking brake cable runs in.  I have found that WD 40 works pretty well even though it is not technically penetrating fluid. Leave the soaked cable sit for at least one hour.  Thereafter go under the rv and move (bend) the flexible enclosure that houses the cable, frequently this will break this cable loose.

    ...Sometimes the cable seizes up where it goes into the "backing plates" at the rear wheels. Secure a small hammer and tap moderately where the cable goes into the backing plate. spraying this juncture with penetrating fluid may help loosen up this location also.

    I have an older rv and find that getting the emergency brake to work can be problematic if I leave it set with the brake on.  I would recommend that you securely block the wheels and forgo engaging the emergency brake during storage periods.  If you have placed your transmission in "Park" your rv should not be able to move anyway.

    Good Luck.  Dennis

    Last modified: 09/17/2020 12:05 PM | Anonymous

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