Rubbing noise from rear wheel , tricky to diagnose , any thoughts?

[malcolm]

Hi everyone , scratching my head over over slight rubbing noise that seems to come from drivers rear wheel area (lwb td42 maverick) .

Only noticeable at very low speeds and sounds like , say, a brake back plate rubbing . definitely rotational - ie faster you go faster the noise gets.

Noise is the same in gear , out of gear , clutch in and even freewheeling , still there when brakes applied including applying handbrake on its own .

I've had the truck on a hoist and rotated all 4 wheels by hand - can't hear anything odd .
My trusted mechanic - who checked on the hoist with me - reckons it can't be much and probably not to worry . I've also , as best i can , listened around the tail shaft / diff cover plate and handbrake drum .

However i would like to diagnose and fix it for obvious reasons , particularly before any remote area travel .

Any thoughts appreciated - I don't post questions without checking carefully / reading the manual etc.
Cheers everyone

[97_gq_lwb]

Any signs or grease around the inside of the disc or drum.

[threedogs]

Hi its not one of your caliphers sticking, pull them apart and rebuild with a kit, pretty sure thats your problem,
Service front caliphers at the same time, might be time for new pads
brake pads not retracting.

[malcolm]

Thanks for replies , no obvious signs of grease contamination . Sticky caliper is a possibility but i would have expected to hear rubbing noise when rotating jacked up wheel - only hear noise when moving .
However if i can't diagnose closer then I'll be pulling things apart in that area .

I also checked after posting that I had not overlooked a stone or nail in the tyre, fortunately- for my credibility - no nails etc visible.

Thanks again and cheers

[Morton]

look for a rock, mud or stick caught between the calliper & protector, it is very common, also mud etc on the inside of the rim rubbing on the rotor or callipar, again very common, take the wheel off, take the calliper off, look behind the rotor, it will be a bit of sh#t caught in there somewhere.

A bearing has a very distinct sound, can never be mistaken for any other noise, have someone that knows the bearing noise to listen, they will tell you in a flash, if it is a bearing, remember the noise as ity is the same on everything with a bearing

[malcolm]

Thanks Morton , I suspect you are right and I'll check in the morning . The body gets a bit reluctant to crawl under the truck these days so it's good to get an opinion and advice - and sometimes there's something peculiar to a particular car that others know about and I don't . Guess that's the value of a forum !

Thanks again, I'll check in the next day or so and post a result,

cheers Malcolm

[malcolm]

PS , yes, bearings have a distinct noise when failing ( which it isn't) - so this should turn out to be a quick cheap fix after all.

[pearcey]

G`day mate.
Two things to check
1 U joints they can squeak under a slight load even if greased as the needle rollers do wear into the cups and nearly always at an angle and you maynot hear it on the hoist
2 the rear break pads have a wear indicator attached and these are noisy when they touch the disc.

[malcolm]

Thanks Pearcy , I'll check and hopefully get in to it later this morning . pads are fairly new as are U joints which were greased a couple of weeks ago and replaced about 4 years ago - but take your point .

Thanks for replying ,

[White Elephant]

Hey mate, sounds like the exact same problem I had for a while, I checked everything that has been mentioned above and still no joy. After swag loads of trial and error I ended up having to pull the axle out. The bearing spacer at the hub end of the axle was worn and running on the axle causing the horrible squeal noise. It was a relatively easy fix, you will need a press and appropriate mandrels to get the bearings off the axle though. Clean everything up, apply some loctite 609 bearing retainer to the inside of the spacer before re assembly. Repack the bearings if they are serviceable. Also make sure you put new axle seals in(they are relatively cheap). I did both sides eventually because they both ended up squealing.

This is the thread- http://www.nissanpatrol.com.au/forum...ar-end-squeal/