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Nissan Primera P12 - Handbrake not great

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petterg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote petterg Quote  Post ReplyReply Direct Link To This Post Posted: 21 Feb 2021 at 8:42pm
Before replacing the calipers do this test:
Drive in a straight line at a gravel road/parking lot at speed of 30km/h.
Pull the handbrake up one click at the time. At least one of the rear wheels should lock before you reach the 10th notch. Walk outside and look at your tracks. Which wheel did locked up first? Did the other lock up soon after?
Second test... drive like the first test, But pull the handbrake as hard as you can. Does both wheels lock up? Does one wheel lock up way before the other? Does both, one or none of the wheels lock up?

As the test results my depend on variable ground conditions, repeat the tests a few times, driving in both directions.

If none of the wheels lock up, but they do slow down the car, your problem is probably the wire adjustment, no parts needs to be swapped. Same goes if the wheels lock up later than the 10th notch.
If only one wheel locks up, do test 3 as listed below.
If one wheel locks up long before the other, your issue is probably the wire to the wheel not locking up. Allthough it could be the caliper or brake pads on this wheel as well. Do test 3.

Test3 (repeat the test a few times to make sure you get consistent results): Find a very slippery surface and brake hard using the pedal. Does both rear wheels lock up? Do they do so at the same time? If handbrake test result told you to do this test, and both rear wheels lock up at the same time, your issue is hand brake wire to the wheel that didn't lock up during the hand brake test. If the pedal test reveal the only one wheel locks up (or before the other) the problem is with the caliper/pad/disc on one of the sides. Do test 4 to figure which side.

Test 4. Drive for at least 10 minutes at a speed of at least 60km/h without using the brakes. Bring the car to a stop without using the brakes. (make use of a uphill, long distance, downshifting gear, or a combination). Now go and feel the heat of the brake discs. Be carefull. They may be burning hot! Any wheel that has a brake disc that feels warm to touch has a sticky caliper / glider or brake pad travel space blocked by dirt/rust. If this applies to one of you rear wheels, you've most probably found you source of problem.

I've replaced good calipers too many times because of brake pad travel blocked by dirt/rust or gliders dried out. Just because it seems to be the default solution people suggest. Save your self the trouble and follow the tests above.
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