GQ rear axle noise...

[high n mighty]

My oldmans mate has a GQ that has been treated extremely well by him and I beleive that he has owned it from new or very near new anyway.

There was some grumpy noises from the rear and on inspection it needed a new bearing on the left rear, the axle was also very dry apparently.

So he replaced it and it stopped the noise for about 500kms of highway touring and a lil bit of town driving etc.

It has the noise back now and has him quite confused and I said that you blokes would definately have the answer so I'm hoping that you can come through

It has 430,000 odd on the clock, has never done extremely deep water crossings, been generally used for town commuting and lately alot of touring with a van on the back and the diff oil has always been and is still very clean.

Any ideas before I make this post any longer??

[high n mighty]

So no idea then???

[bogged]

is the hub on the offending rear wheel gettin hot?

is the noise from one side only?

Not a seized caliper? They have a habit on GQs of that

[high n mighty]

Thanks for the advice Bruce, will pass it on...


anyone have any other suggestions??

[ozy1]

illl second what Bogged said,

the GQ callipers have a habit of siezing up, they tend to make some noise, too,

[Woop]

Does the noise disappear when slowing down from speed to a stop? Usually happens when the grease in the bearings has either run dry or become contaminated. Did he replace the bearings himself or have someone do it? And is it a disc or drum axle? The axle bearing MAY have too much pre-load. Bearings shouldnt be too tight after pressing them into the bearing housing

Nick

[bogged]

Does the noise disappear when slowing down from speed to a stop? Usually happens when the grease in the bearings has either run dry or become contaminated. Did he replace the bearings himself or have someone do it? And is it a disc or drum axle? The axle bearing MAY have too much pre-load. Bearings shouldnt be too tight after pressing them into the bearing housing

Nick

so u got that needle greasing thing to do the rears nick? When can we do mine old buddy? They aint been done since I had the car...

[high n mighty]

Disc rear

[high n mighty]

I was told this arfternoon that it is def not heating up

[high n mighty]

Here are the answers from the vehicle owner


Craig, here are the answers to the Q's posted.

is the hub on the offending rear wheel gettin hot?---- As we said, hub is not getting hot.

Not a seized caliper? They have a habit on GQs of that Calipers are not rubbing, no marks on calipers nor on pads to show undue scraping.----- Brand new disc pads with "high spots" on outer circumference of discs filed back to "flat".

is the noise from one side only---- It is only on the one side, LH (passenger side) rear.

Does the noise disappear when slowing down from speed to a stop? ----Generally only heard at low speed, SOMETIMES when coming to a complete stop but not often. Noise is intermittent.

Usually happens when the grease in the bearings has either run dry or become contaminated.--- Grease is brand new and not contaminated.

Did he replace the bearings himself or have someone do it?--- New Timken bearings replaced by bearing experts at their shop.

And is it a disc or drum axle?--- Disc axle.

Thanks Craig for your help, and and that of your mates.

[mkpatrol]

H&M,

Put the vehicle on a hoist or jack stands then run in gear. Use a screwdriver to find out the location of problem. Place large screwdriver (you know the biggest one Stanley make with the yellow handle, like that) to the diff in the axle area then the other end to your ear. You will be able to hear it clearly if it is buggered because it will have a god awful rumble. If it is back in the left hand side dont discount the bearing because it is new as new parts can fail too.

If you are not sure then compere it to the other side.

[bazzle]

The rear seal sometimes :Groan:. Normally Only heard at wallking pace.

Could be another dud bearing too. Borrow an axle from a friend. to check.

Bazzle

[high n mighty]

Thanks again for the replies guys. I have already organised a spare axle and putting it on stands safely and checking for the noise with the screwdriver sound like awesome ideas

Any other ideas would def be appreciated though so we don't hook in half cocked

[bazzle]

Should really be checked with weight on bearings. Just swap in spare axle, if noise goes good.
Not rally a sfe practice running up on stands on stands putting a screwdriver near rotating wheel!.
If you need to a Stethoscoe costs $20 from Super cheap etc..

Easy to remove,
Jack up just that side (will stop oil coming out) place stand.
Remove wheel
Undo caliper bolts, hang to side
Remove disk
Undo hub bolts.
Pull axle

Replace

Bazzle

[mkpatrol]

Should really be checked with weight on bearings. Just swap in spare axle, if noise goes good.
Not rally a sfe practice running up on stands on stands putting a screwdriver near rotating wheel!.
If you need to a Stethoscoe costs $20 from Super cheap etc..


Bazzle

Why not? Wouldnt you remove a gearbox using jack stands? Quickest, easiest way to diagnose faults with bearing rather than stuffing aroung changing axles which takes time & we all know time is money.

[holeyhardtop]

i think you'l find bazzle meant that it is a bit unsafe running the vehicle in gear whilst it is on the axle stands. if something goes wrong and it falls off it'll drive off and crash into whatever is around

[mkpatrol]

I know what he meant but if you think the vehicle is going to fall of jack stands then you shouldnt be under there at all plus you will always have someone in the drivers seat if something goes wrong. Safe placement of jack stands & there will be no problems.

[bazzle]

That too, but bearings dont always make a noise until they have full weight on them.

Bazzle