Rear end problems.....

[4rnr]

You're thinking backwards. The crush sleeve is there to maintain proper pinion bearing preload, and since by the time the pinion seal is leaking the bearings have worn in, it's a good idea to tighten them up anyway. The only thing that will let the pinion ride into the carrier (short of blown bearings) is loose pinion bearings either from getting worn out, or from the nut backing off.

I usually reuse the pinion nut and turn it past where it was staked before and check for up and down to side to side play in the pinion till it's all gone. It's tough to check the preload with the diff in the truck though, but I make sure I can turn it easily by hand in that small free-play window before the pinion contacts the ring gear. If you tighten it up too much then it will bind up and harm the bearing in the long run.

Yeah

This is completely FALSE.

if the pinion is way overtouqed (think extreme case) and the crushsleeve is collapsed even more it is going to pull the pinion away from the carrier.

The ONLY two ways a pinion head can hit the carrier is if the pinion nut backs off and lets the pinion shift inward or if the small pinion bearing fails/wears/crumbled and lets the pinion shift inward.

Yeah

You can't make it run shallow either, you can only over tighten the bearings which will cause premature failure, or under tighten them which will also cause premature failure. Under tightening can lead to the pinion hitting the carrier, but other than that you can not adjust pinion depth without disassembling the diff.

Yeah

Yup, good point. The crush sleeve maintains the bearing preload and has already been crushed, retorqueing the flange could crush it further and cause the pinion to run too deep into the carrier. Though I will admit ive done it and not had any problems yet. But with the exception of only a few bolts I never really pay attention to torque specs.

Nevermind, I was on a crack binder. Havent messed with diffs in a while, cant pull a pinion through the housing and shims.

But to the op....drop the fluid.

 

[HemiDave]

But to the op....drop the fluid.

Doing that today.

Thanks guys!!

Dave

 

[WristPin]

anywaysss...

yes it has to be a 4x4 diff. no a 83 will not work.
for one it has a different bolt flange pattern
and two it has lower gears

look on the firewall of yer truck'
the VIN plaque will have a bunch of codes on it.
there is a good chance it says G292
wich means 4cyl diff 4.10 gears.
at least check it there, then look at the end of the pinion, (with driveshaft removed) it should be painted pink.
that also indicates 4.10
if u looked at that 83 i bet it was painted blue huh

 

[Chop Shop]

it should be painted pink.
that also indicates 4.10
if u looked at that 83 i bet it was painted blue huh

Sure about that? Ive got a blue one with 4.10s.

 

[2ndGenToyotaFan]

It's been my experience that the paint colors are a bit fast and loose... Not something to be laying your money down based on... Count the teeth, or spin the axles...

 

[WristPin]

Sure about that? Ive got a blue one with 4.10s.

That's how Toyota did it. Sure Are there's a possibility of oddballs and other folks out there Are paintin stuff. But by the books Toyota did It that way.

When I'm digging in the pile of diffs I spot the color I want then check the stamp on the ring. Its gonna tell you what the tooth count is.

Jerod is correct and since its a mark of mere paint not a metal forged brand it is a good thing to check by his described methods.

 

[Chop Shop]

That's how Toyota did it. Sure Are there's a possibility of oddballs and other folks out there Are paintin stuff. But by the books Toyota did It that way.

When I'm digging in the pile of diffs I spot the color I want then check the stamp on the ring. Its gonna tell you what the tooth count is.

Jerod is correct and since its a mark of mere paint not a metal forged brand it is a good thing to check by his described methods.

Exactly. I have over 40 toyota ring and pinions ready for Scrap. I set up alot of toyota diffs. Its not always like it should be in the directions and pics online.

You can read and look at charts all you want but its no replacement for learning with real parts.

I have two fj80 hipinion diffs here with blue paint on them, they are 4.10s tho. They were painted by toyota in the factory.

I was just splitting hairs like he was about the 83 diff to begin with. If the 83 diff is 4.10a and he wants to drill 4 new holes he can use that diff with no problem. I do think however he can find a exact match on CraigsList for 50-75 if patient.