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2001 Nissan Pathinder 4wd, Rear Brake Shudder
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PathyMan
New User
Oct 10, 2011, 4:45 PM
Post #1 of 7
(1947 views)
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2001 Nissan Pathinder 4wd, Rear Brake Shudder
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2001 Nissan Pathinder 4wd
3.5L V6, 130,0000
During hard or high speed braking, I get a strong shudder from the rear end. Even when braking at slower speeds, it seems like the brakes grab then release as the wheels turn. I've pulled on the parking brake to verify it is coming from the back.
Longer story - was told by the garage I had a leaky wheel cylinder. Disassembled and verified. Decided to go ahead a change them on both sides, plus purchased new hardware (i.e. springs), purchased new drums, and installed. Initial test drive seemed ok.
Went on the highway the following week and immediately noticed the shudder in the rear when braking at high speeds. Suspected out of round drums. Disassembled, cleaned reinstalled and tried again. Same thing. Sent drums back to retailer and purchased OEM (Japanese) parts (first set were aftermarket). Installed and tested on highway - same thing.
I'm not sure where to go next. Seems unlikely I got 2 consecutive out of round drums. Could it be the wheel cylinders? Should I have replaced the shoes?
Appreciate anyone's insight. Thx!
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 10, 2011, 5:18 PM
Post #2 of 7
(1930 views)
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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Why are you assuming it's the rear at all? It is rare for the rear to cause pullsation and even rarer when it's drum brakes.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
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Oct 10, 2011, 5:25 PM
Post #3 of 7
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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If your feeling the brake shudder when yanking the e brake it has to be something in the back..eh? Your not yanking the e brake at the same time your hitting the foot brake?
Might want to measure the out of round on those drums with a drum micrometer just to be sure. Max tolerance is .030mm.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
Ultimate Carjunky
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Oct 10, 2011, 5:28 PM
Post #4 of 7
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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I don't know about that. In 40 years I have never seen a brake drum cause a shudder. The just aren't strong enough and tend to give and flex. Mild surging maybe but the shudder is nearly always the front with drums in the rear.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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PathyMan
New User
Oct 10, 2011, 6:37 PM
Post #5 of 7
(1909 views)
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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Thanks for the response.
I didn't assume it was the rear. I've only come to that conclusion because I've engaged the parking brake several times at varying speeds (with my foot off the brake) and can feel the back end shudder. It is very noticeable.
Wouldn't it be odd for a brand new drum to be out of round (twice)?
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Hammer Time
Ultimate Carjunky
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Oct 10, 2011, 6:39 PM
Post #6 of 7
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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It would be odd for it to happen even once.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Blulakr
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Oct 11, 2011, 12:01 AM
Post #7 of 7
(1894 views)
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Re: 2001 Nissan Pathinder 4wd, Rear Brake Shudder
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Rear drum brakes can cause a shudder but it is pretty rare.
I would...
Check for a bent or out of round axle hub.
Make sure the brakes aren't adjusted too tight and overheating. Make sure the shoes and hardware (return springs, adjuster etc) are installed correctly. Make sure the park brake releases fully.
If the park brake is applied forcefully when the drum is hot that can distort the drum.
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