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Handbrake below efficiency requirements

  • 16-03-2013 8:50pm
    #1
    JoseJones
    Registered Users, Registered Users 2 Posts: 612 ✭✭✭


    Just looking for a few ideas here, I'm trying to get my 2001 Almera to pass the MOT and it's failed twice now because of the handbrake. Initially it was because the efficiency was below the requirements and the caliper on one side was recording little or no effort.

    I replaced the caliper on that side and the efficiency is still below the requirements. Does anybody have some suggestions of what to look at next?

    I know I have a pitted/corroded piston and worn seal on the caliper on the other side which I am going to replace next along with all the seals in the caliper. I also might replace the handbrake cables in case they are stretched. Is there anything else I should look at or might be missing?

    Thanks in advance.


Comments

  • #2
    Wheelnut
    Registered Users, Registered Users 2 Posts: 977 ✭✭✭Wheelnut


    Did you take out the brake pads and make sure they move freely in their sliders? You may need a screwdriver to scrape out the grooves in the callipers and a small wire brush to finish them. Then you may need to clean the tongues on the pads with sandpaper or maybe a file



    Edit: this assumes that seals, pistons etc in the callipers are OK because you say you are going to do some work there.


  • #3
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Whats the condition of the pads and disks?

    The rear calipers are extremely troublesome on the early N16 almeras(so much so that they went back to drums for a couple of years after 01) If you've had a seized caliper then you will need new handbrake cables as one cable will have been doing all the work for whatever amount of time you've had the caliper problem.

    Also, I'd recommend new/re-manufactured calipers as, if the caliper piston has any corrosion on it then the cylinder bore will also be damaged meaning that new seals will only be a temporary repair at best.


  • #4
    JoseJones
    Registered Users, Registered Users 2 Posts: 612 ✭✭✭JoseJones


    Thanks fellas, yeah I have wire brushed the ****e out of the carrier to remove any rust and muck on there so the pads are nice and free. The pads have plenty of material left on them and the discs look fine but I'm not sure if they are worn. The Haynes manual tells me they should be 10 mm thick so I will measure them when I take the wheel off just to check.

    I will also inspect the caliper bore for pitting/corrosion when I am fitting the piston. Another reconditioned caliper might be the way to go as you say, I think I will do the cables too. Then I could say everything on the handbrake system is new and if there is still a problem after that then I am out of ideas!!


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