Can you tell me what 9" I have and if it's still any good??

[Jerry Clayton]

read my earlier post---put the three pinion bearings in with a new crush sleeve--your gears aren't hurt--new bearings and seal---use the same pinion housing shims you have, just tighten the pinion nut until you get slight resistance in spinning the pinion--you probably won't even have to reset the backlash unless you took it further apart than your pics show---don't worry about 28/31 splines

[commercialcobb]

Originally Posted by Jerry Clayton

read my earlier post---put the three pinion bearings in with a new crush sleeve--your gears aren't hurt--new bearings and seal---use the same pinion housing shims you have, just tighten the pinion nut until you get slight resistance in spinning the pinion--you probably won't even have to reset the backlash unless you took it further apart than your pics show---don't worry about 28/31 splines

Do I need to wire brush or polish off the edges if they are sharp or maybe damaged slightly on the R&P gear? So I need to just get a gear installation kit with bearings, crush sleeve, and what ever else comes with it?? Should I also go ahead and replace the axle shaft bearings? And when we did give a little go to it, only one tire spun. Would that mean the Equa-loc paper and steel need replacing or is that how that limited slip works? I don't want to get it all repaired and floor it only to smoke one tire all the way accross town but also I cannot aford a detroit locker so I guess oh well eh? If I could find the papers and steels I would definitely replace them just for the sake of replacing them.. Anyone know where to find these clutch papers and steels?

[commercialcobb]

OK, this is driving me crazy.. What limited slip do I have? I have the 5/8" bolts with thin metal washers, has recessed bolts, 4 spider gear 4 pin (supposed to be Trac-lock).. It is not a machined surface (equal-lock).

This is quoted from an internet source that is repeated on many different pages.. Confussing the hell out of me. I cannot buy the parts if I don't know what it is that I have.

http://www.kevinstang.com/Ninecase.htm

How to identify a “Posi”

The two basic types of “posi” units (posi is the G.M. name for its positive traction system which has been become a part of the nomenclature) are the early Equa lock and the subsequent Traction lock units ( I will refer to them here as “spools” to simplify things). I am not exactly sure when the Equa-locs first appeared, early units are scarce – I haven’t seen many prior to 1964/65 and these are quite rare.From what I have seen the Equa locs were used up until 1969, which is when I believe the Traction Loc units first appeared. There are visual and internal differences between the two spools and most parts do not interchange.

Internally the number of clutch disc and plates differs between the equa loc and trac loc spools, the equa loc having only 3 fiber plates and 4 steel with one large belveder spring applying force.The trac loc unit utilizes 4 fiber plates and 5 steel plates, with 4 smaller springs applying force.Both equa lock and trac loc units were available in 2 pin and 4 pin varieties, in either 28 spline or 31 spline versions.The four pin 31 spline unit would be more commonly found as a trac loc piece. The four pin being the heavier duty unit utilizing 4 spider gears vs just two in the two pin variety (as noted in figure above a four pin variety will have actually just 3 pins and a two pin will in reality just have 1 pin- the number of spider gears is actually what is being referred to).Shown below are the internals of a four pin equa loc, note the five “fingers” on the steel clutch plates-the tiny circular tabs on outer edge- (trac loc units will have only 4).