have a 87 truck with auto trans the rear end has a lot of slack in it i have tighten the Pinion Bearing but did not help what should i do i did install a locker about 2 months ago also when it shifts somethimes it feels like u bolts are lose but i checked them like the truck wants to kick to side the front end will make sound sometime when you have hubs locked and not in 4 wheel drive like a grlowing sound

 

Who installed the locker? Sounds like a fubar'd job.

I don't have enough experience to direct you adequately. Someone else will surely chime in. Maybe even ZUK.<<<He's psychic, btw<<<

 

I put locker in was easy dont think i messed it up

 

when did the 'slack' start?....and what locker is in it?

Tell me more about how you put the locker in and how did you adjust the backlash.

 

U-joints need Replaced?!

 

ez locker i just put it back the same way it cameout where can i get the spec for backlash and stuff u joints good

 

EZ locker has about 30 degrees of slack ,Normal.The pull under throttle with a locker is probly a low tire.
Bigblock

 

about a 1/2" ??????????????

 

Naw somethins screwed!Better pull it and check it.
Bigblock

 

that what i was thinking

 

 

checked tires one had 5 # more but still got slack can i do this and will it help http://www.gearinstalls.com/freshen.htm i just marked everything the way it came out and put it back

 

X2 on the amount of slack they have alot, It is partly how they work. They do have some quirks when driving with them. So extra play in the steering will make it worse if you have any.
It stays locked up under alsmost any load and unlocks as soon as you free it up so it can feel like it is snatching and pulling. Especially if you are doing it on purpose trying to figure it out.

 

i can turn it that much about 1/2"

 

i am takling about the drive shaft with slack so it get to be in the rear end

 

Those lockers create a bunch of slack. Another downside to them
If you noticed when you installed it, where you slip your pin thru the halves the halves are egg shapped. That is so the pin will ramp up the halves and apply pressure to the drives. It has to have a certain amount of slack to ramp and lock and then unlock.
I would call Detroit direct if you have questions. They will know before the parts guy

 

That 1/2" of slack is normal with lunchbox lockers.....that's about 20 to 40 degrees of rotational slack. Usually, with an auto tranny the quirks of the lockers are almost transparent. Loose carrier bearings and maybe loose pinion bearings could amplify the clanging noises. Some auto trannies shift abruptly also . My 88 V6 auto shifted like silk...best tranny I could hope for....too bad it had dark brown burnt oil with many particles of metal in it.....My other 87 22RE auto had great looking tranny oil but shifted abruptly even with numerous fresh oil changes and it tended to make "clangy" sounds on the driveline when it shifted.


thook--I gotta get myself a crystal ball like that!

 

do u think is is worth going in too and check it

 

BTW there was no need to screw with the pinion when installing the locker.Explain to us everything you did.Have you pulled the 3RD yet?
Bigblock

 

I did that before locker it was lose i think i just have too much back lash i am going to pull it soon i dont need to strip the gears