Higbee89

Im gona be getting a 88 pickup 22r 4x4 this weeknd on a trade for a 4wheeler. I havent seen the truck in person but the guy is willing to drive about 3hrs to bring it to me so he must trust it. Well any how i was getting the info about it and he said the previous owner had regeared it to run 33s so the rear end has a whine he has been driving it with no issues, my question is is it normal, is there an issue from regearing that just hadt showed its ugly face yet. If it has a locker could that be the cause of the whine(guy im getting truck from does not know if it does have or not). Am i gona be looking at a near future repair with the noise or will it be fine? Like i said above i have not seen(besides pictures and video) nor drove truck so can not say the description of the whine if its on decle or accel or just constant when moving. I just want to get opinions on it and then will give more description when i get the truck and drive it thanks for any help

RJR

Generally a whining rear end means the gears weren't set up properly. Best case it's an annoyance. Worst case it means overheating and early failure. A good indicator, besides the noise level, is the differential temperature after a few miles of high speed driving. If it gets upwards of 150 degrees or so in normal highway driving you could be headed for trouble. Easy to check with one of those $10-15 laser thermometers.

The whine is likely unrelated to whether or not it has a locker.

Higbee89

Ok thanks for the reply i was affraid thats what was gona be the case. I will do some driving around when i get and check temp of dif. Whats the average cost to have the rear end redone?

Terrys87

iTrader: (1)

Here is a link https://www.marlincrawler.com/differ.../toyota-8-4cyl for parts. Then you have the cost of getting someone that can set them up. Not sure what that would be and finding someone that could do it and knows what they are doing. Might be another option to look at if you do need to replace it. Marlin Crawler is a trusted name in the Toyota community.

mwisham

If you are very lucky, you may not have to purchase any parts, just have the gears set properly by someone that knows what they are doing. It has been my experience that whining is usually caused by the gears being too close to each other.

RJR

Check with this guy www.gearinstalls.com ZUK is a somewhat regular poster on this forum and by all accounts does great work at reasonable cost. I doubt anyone knows more about Toyota differentials than he does.

wberry85

I got my diffs rebuilt by a local shop for $200 per axle plus $135 for a Yukon master rebuild kit.

Higbee89

Ok i got the truck yesterday drove it around town and the noise the seller decribed is not close it is a grinding noise that is constant and gets louder with speed. Seller said that when he replaced a wheel cylinder and adjusted the brakes(a day before he brought the truck) that it did not make the noise with the wheels and drums off. Not sure if its true since ice not had time to get into it my self but is there any issue that would cause the noise in the brakes. I only drove around town and the noise was really noticeable so i can imagine that it would be untolerable at highway speeds

Y8rodo

Does the "grinding" noise change turning left or right ? I've could it be a bad wheel bearing?

Higbee89

I will have to take it around town again after i get gas in it and see if i can get it to change with turning. I should be able to check wheel bearings by jacking it up and checking for play right?

Y8rodo

Jack it up spin the wheel check for a lumpy feeling , sometimes you will feel play but not always. It is also possible that when they did the diff they damage a bearing on the carrier .
If driving around corners the speed of the grinding changes you most likely have a wheel bearing issue or a spider gear issue , if the noise is the same most likely is a carrier bearing. Keep in mind it is a mechanical object and any thing is possible !

Higbee89

So ive been trying to look up parts for the rear end where is the best place to go for parts? Im looking to get an engine gasket kit as well. And what kinda job is it to change all the bearing in the rear end? I work on farm equipment for a living so i know how can do it just want a heads up on what im getting into

Higbee89

Ok i jacked it up tonight and put it on some stands left wheel spun good the right wheel on the other hand could not make a full turn with out me constantly spinning it. So i block the front wheels started and put it in 2nd gear and the right wheel had enough drag that it would not turn. Set the left wheel onto the ground and tried again and the sound is for sure on the right side but not sure if its in the brakes or a bearing

Terrys87

iTrader: (1)

I would suggest maybe putting a light scratch mark on the brake shoe and see if it gets scuffed off quickly. Might help tell if it was the shoe dragging. What do the rear brakes look like?

I would suspect the brakes first before bearings.

Higbee89

I did not have time to get that far i should be able to take tire and drum off and see if it still catchs after that

Y8rodo

If you have set up diffs before and can press bearings off and on without damaging them , Toyota are of the easiest to do but you will need to be familiar of how to adjust a diff to get the right pattern so the gears mesh properly or you will do more damage than harm. I wouldn't order parts until you know exactly what is going on

RJR

First thing is to pull the brake drum, as you've said, and see what it looks like inside. If that's OK, the next thing I'd do is pull the fill plug and check the oil level in the diff, and then pull the drain plug and see what the oil looks like. If that looks good you can move on to the wheel bearing, or worst case the differential. You'll have to pull the axle anyway to get into the differential, so inspect the wheel bearing and seal thoroughly as a part of that process.

I'm with Terrys87, though. Since the PO just rebuilt that brake, chances are good something came apart and there are pieces thrashing around inside the drum. That'll be obvious when you get it apart.

Higbee89

Ok i got some more time to mess with it tonight the right break was out of adjustment so i adjusted it so that it spins freely but im pretty sure ive got gear issues il get a video posted

Higbee89

If you listen close. i start it up put it in gear rev it up and then shut truck off and let thre axle spin theres alot of noise. Let me know what yall think

RJR

That does sound pretty awful. It could be an axle bearing, but that's a lot of noise from a bearing. I'm guessing gears.

You can pull the axle and then do the same experiment. That'll tell you if it's the axle bearing or inside the diff. Just put something under the end of the axle tube to catch any oil that runs out.

Did you get a chance to check oil levels and oil quality in the diff?