my new posi axle!! 56K arning

[NeXtras]

wear pattern between the ring and pinion, usually checked with yellow paint to make sure the pinion is contacting the ring gear in the middle. not necessary for this application as it is already setup from the factory. If you were installing new R&P like 3.73's or 4.10's then you would want to check the backlash and wear pattern.

lol, i know this, trying to make him explain himself lol.. ive rebuilt rear diffs at work

 

[flareside_thunder]

Except in this case the yellow markig paint wouldn't matter with it being over 100k miles.....you should see the wear in the gears.

 

[CaFordDude]

why are you winking at me?

Ryan

Probably cause he isn't even old enough to drive yet...

 

[NeXtras]

Franken keep us updated :thumbsup:

we'll have to meet up sometime.. your not that far from me

 

[89frankenford]

well i started work on the axle yesterday. i put it on saw horses and went to town.i took it all apart and started to inspect the axle. the housing is in great condition. the axle shafts seem to been in good condition from what ive looked at. the backing plates are brand new so i dont need to replace those! woot! the diff cover is also in great condition. i replaced the entire brake system on the axle yesterday. once i was done that i took out the carrier. now when the axle was together when i bought it i had my friend hold down one axle shaft and i spun the other shaft. it was wicked hard but i started to spin the other shaft while the one my friend was holding the other one. does this mean the clutches are good? im honestly not sure because i dont have that much experience with posi axles. that being said i also gave chris a call(skandocious) to see if he knew anything about the clutches in a posi. we talked for a bit on the phone and we pretty much came to the conclusion that i should replace the clutches in the posi. on a side note he doesnt have a weird hippie accent i took a look at my ring gear.....and found a chip in the gear.........im not too happy about it but oh well. looks like im going to be getting a new ring and pinion(for the THIRD time now from chris..haha)

and here is where i wasnt happy........there is a chip in one of the teeth on the ring gear. AND i found 2(two) of these plate chips........on the bottom of the pumpkin

 

[Skandocious]

Youch. Yeah I wouldnt use that ring gear Trav.

 

[big5oh]

unless this guy destryed the rearend (like using it with no gear oil), which would be prevelent by looking at the gears, backlash isnt going to change, much anyways...

wear pattern? on what? the clutches?

Like the supercab said, I was talking about the ring to pinion wear pattern.

Do you know for a fact that this rear end has not been apart and back together by someone that did not know what they were doing? Do you also know for a fact that it was not abused, neglected? If not, then measuring the backlash and checkig wear pattern would be a good idea, especially considering how easy it would be to do prior to intallation with the cover already off.

 

[NeXtras]

Like the supercab said, I was talking about the ring to pinion wear pattern.

Do you know for a fact that this rear end has not been apart and back together by someone that did not know what they were doing? Do you also know for a fact that it was not abused, neglected? If not, then measuring the backlash and checkig wear pattern would be a good idea, especially considering how easy it would be to do prior to intallation with the cover already off.

SHUSH!


almost guarentted it hasnt been apart!

franken.. with those clutches.. what you need to see is this. when you spin one side clockwise, the other wheel should the SAME direction. if they spin OPPOSITE directions, the posi isnt working.

 

[big5oh]

almost guarentted it hasnt been apart!.

Almost guarenteed isn't knowing for a fact. As easy as it is and and much of a head ache as it an prevent down the road, why not check this kind of stuff? There is nothing to loose and everything to gain. I guess it would all depend on how maticulous and thorough the individual is, if this is not your thing, then fine. I on the other hand would not even think twice about it.

 

[NeXtras]

Almost guarenteed isn't knowing for a fact. As easy as it is and and much of a head ache as it an prevent down the road, why not check this kind of stuff? There is nothing to loose and everything to gain. I guess it would all depend on how maticulous and thorough the individual is, if this is not your thing, then fine. I on the other hand would not even think twice about it.

you need to stop harping on my words. no more.

Back on topic!

 

[big5oh]

you need to stop harping on my words. no more.

Back on topic!

OK...

Travis, do youself a favor and check preload, wear pattern, runout and backlash to be 100% sure that this rear end will last and for peace of mind if nohing else. Differentials is not an area that you want to cut corners on, because if you do it will come back to bite you down the road. It's quick and easy to do and it will tell you how well set up the rear end is. It's well worth the time.

 

[NeXtras]

ok been talking with Skan online..

something i want to point out in regards to those clutches. You should be able to spin one wheel and have the other motionless like you did already. In a LS rear end there is an allowance for a small amount of movement like this, it prevents wheel drag in cornering.

I dont know too too much about the LS rear in these, havent seen one.. can you actually see the clutches?

 

[big5oh]

franken.. with those clutches.. what you need to see is this. when you spin one side clockwise, the other wheel should the SAME direction. if they spin OPPOSITE directions, the posi isnt working.

This is an LS, not a POSI.......they are like apples and oranges.

 

[Skandocious]

This is an LS, not a POSI.......they are like apples and oranges.

True-- but what he said about wheels spinning same vs opposite directions holds true for an LS too. Sometimes people just use the terms interchangeably, even though its not TECHNICALLY correct.

 

[NeXtras]

Posi and LS is the same thing, different name, posi stands for Positraction (Positive Traction) posi a term coined by gm i believe.. correct me if im wrong but pretty sure, plus the title is "my new posi axel" lol

lol.. the whole talk about posi reminds me of the movie My Cousin Vinny lolol

on a technical side, ford called it Traction-Lock, or Equa-Lock.. so yes, because this is a ford, its TECHNICLY not positraction because we all know this isnt a chevy.

In the 1950s and 1960s many manufacturers began to apply brand names to their LSD units. While Packard pioneered the LSD under the brand name "Twin Traction" in 1956, the most famous of these was Chevrolet's "Positraction". Since then, Positraction (often shortened to "positrac" or merely "posi") has become a genericized trademark for LSDs.

http://en.wikipedia.org/wiki/Limited_Slip_Differential

 

[big5oh]

From what I have noticed a true POSI keeps the wheels joined together via clutches at all times which do slip, but it takes a decent amount of torque. Going around a corner chirps the tires because of this. A Ford traction loc (LS) on the other hand performs as an open differential unless it "sences" a one wheel spinout in which case the wheels the become joined joined by the clutches. No tire chirping around corners. While the axles are joined by clutches with both units, there are big differences in construction and performance.

 

[NeXtras]

u realize LS stands for Limited Slip? which is generalized? Im getting tired of you and fast. While Posi is a chevrolet read end, posi is the most widely used name for a LSD.

Comparing apples and oranges? no.. more like tissues to kleenex..

We all know i wasnt refering to a chevy rearend, so you need to stop chalenging my everypost..

and by the way, the chevy rear end is clutch operated just as the ford rear end is.. same thing. They just work a lottle different. And what makes the clutches "sense" a one wheel spin out on these axels? there isnt an electrical component.. pretty sure the clutch keeps them together at all speeds

 

[big5oh]

Comparing apples and oranges? no.. more like tissues to kleenex..

The traction lok engages when there is a difference in wheel speed. A true POSI is engaged all the time. Thats the difference, a big difference if you ask me......bigger than tissues to kleenex.

 

[NeXtras]

w/e.. you need to stop poluting others threads to challenging my words..

is there a mod on here that can clean this up for Travis? thanks

 

[flareside_thunder]

wow i ain't no mod but you guys needa stop this bickering I the thread..you wanna bicker and argue with each other take it to PM..........we have establiched the fact that he does need to check backlash and wear pattern now.WHY? because now he needs new gears so that will be done......Travis I'd go ahead and add the clutches like Paul suggested.......it'd be like a spool that slips if you ever grab a root suddenly and may help you from breaking things in the long run.