grinding noise

[cdc]

I need help just finished replacing all the front end bearings in my 2002 zd30 trying to fix a grinding noise that comes and goes guess what hasnt fixed it.I made a big mistake on the weekend when I drove about 30km on the highway with the right hub still locked in 4wd went to the diff shop he said check the bearings so I cganged them all the mechanic had no idea what now im really worried it could be the transmission can anyone help

[MEGOMONSTER]

I need help just finished replacing all the front end bearings in my 2002 zd30 trying to fix a grinding noise that comes and goes guess what hasnt fixed it.I made a big mistake on the weekend when I drove about 30km on the highway with the right hub still locked in 4wd went to the diff shop he said check the bearings so I cganged them all the mechanic had no idea what now im really worried it could be the transmission can anyone help

Most probable the locking Hub but that's a guess.

Is it grinding noise only or bit of squealing or crunching.
Is it periodic or constant.
Does it happen at certain times, like turning or going over bumps.

[cdc]

No its really random took for another drive and kept my hand on the transfer stick could really feel it coming thru slowed down selected 4wd then back to 2wd and it got worse.Im going to take the front drive shaft out and go for another drive, everyone I talk to say patrol transfer boxes are bullet proof maybe they arent?

[meh]

My ac compressor bearing failed and made an awful grinding noise in and off until it would stay on all the time

[cdc]

I did try turning the ac off when the noise happened it done nothing but the belt tensioner was flogged out so I replaced that to

[threedogs]

Disc pads low

[cdc]

New rotors and bendix pads 3 months ago

[threedogs]

So its an auto is it ??
How about alternator bearings

[cdc]

Yeah its an auto and the alternator is 6 months old

[cdc]

Took the front drive shaft out and hasnt changed still the same I have noticed it gets louder when turning left

[happygu]

CDC,

You won't harm your car driving with one or two of the hubs locked in on the bitumen, as long as you don't have the small lever inside in the 4wd position.

Is the noise more of a clicking/clacking sound rather than grinding .... then this will be one of the AUTO hubs binding a little.

Grinding noises can come from disc brakes, stones lodged between the disc backing plate and the disc itself, and bearings.

Mic

[happygu]

Try driving with both the hubs locked and the car in 2wd, and this will take the hubs out of the equation....
Mic

[billyj]

if all the bearings are new and adjusted right then id be looking at your caliper slides

[cdc]

Well took the drive shaft out on sun straight after it still made the noise but since then it has gone will put it back in tomorrow and see what happens real mystery thanks for everyones suggestions to billyj what are the caliper slides had a good look over the brakes when I had the hubs apart couldnt see anything out of the ordinary

[mudnut]

I had a strange noise come and go in the drive train. It turned out to be the hand brake was not fully releasing sometimes.

[cdc]

Yeah ive checked that