9" gear setup?

DBrown · Post by **DBrown** » Mon Feb 07, 2005 6:34 pm

well, I pulled everything apart and I double checked everything again. I put the races in by them selves with out the retainer just the races and the retainers still didn't tighten down all the way. the races were tight in the housing though.....I guess I will just have to pull the other housing and check it.

the pattern changed when I put it back together, the pattern is more centered.

here is a pic:

Post by **Nobody** » Mon Feb 07, 2005 7:32 pm

Looks like the pinion needs to be a little deeper now. Did you set backlash?

When you had it all apart did you put just the bearing caps on by themselves?

In the pic below, notice how my bearing caps are marked with a single dot and, and double dot. There are corresponding dots on the 3rd, so you get them on the right side in the right direction. The can be marked many different ways. Does yours have any kind of markings?

DBrown · Post by **DBrown** » Mon Feb 07, 2005 8:49 pm

yeah, sorry.......BL = 8 PINION .038

I did put the caps on by them selves and they were a little off no matter what side I put them on.......I'm not happy with this. I know I am going to end up breaking another one down. at this point I am counting this as practice.

there are no markings on anything.....I have a feeling that this was another hillbilly getto fab job that is typicle for this area. someone probably just took it apart and threw it back together not paying attention and mixed up some parts. on your 9" does it have the same problem I am having?

Post by **Nobody** » Mon Feb 07, 2005 8:51 pm

Nope...mine is good to go. It's a Nodular 3rd

Now if I can just find an early bronco to put it in!

DBrown · Post by **DBrown** » Mon Feb 07, 2005 9:10 pm

lucky, where did you get the nobular from? was it stock? all I have is the mid grade....I am just glade I didn't get shafted with the WAR case. I would have been digging threw a friends back yard on wed. to get a better case. I think I am just going to pull the pinion support, spool/ring and all the new junk out and start over on the other housing. it shouldn't take that long now that I have the bearings pressed on.

I guess this is what you can expect when you grab all the free junk you can find. at least the housing and axles were good. also the 31 spline LS carrier may be rebuildable if the groove wasn't worn to deap in the end. the gear I am going to call junk too, it has a groove worn in the end where the bearing rotates. might cut it down and use it for a cool looking paper weight.

Post by **Nobody** » Mon Feb 07, 2005 9:16 pm

The nodular 3rd came in the 9" when I bought the early bronco part truck. It was all caked in gunk, so I don't think the guy knew what he had. It was a pleasant surprise. Man did that gear oil stink when I pulled it apart!!

Yeah.... I wouldn't trust that 3rd member you have. Of course your other one probably has the bigger bearings

DBrown · Post by **DBrown** » Mon Feb 07, 2005 9:32 pm

Of course your other one probably has the bigger bearings laugh

oh, you know it will.....but that is just how my luck works sometimes. you got real lucky getting a factory N case. usualy the racers dig threw yards untill they get them all. but then you have people that have no idea and just run the crap out of anything. I have a buddy that has a 60's and 70's ford graveyard behind his house with all kind of junk and just takes the 31 spline axles/carriers and 460's and leaves the rest to rust. he hides everything back in the woods behind his house so no one will rob him blind. you have to drive a 1/4 mile before you can see anything laying around but then a clearing and freakin f100's everywhere. most are 2wd but still lots of parts. even if I find a nother messed up case I will just shcedual a day that I can get on of the 28 spline 3rds and set it all up in that. but I think the on in the Bronco will do ok as long as some meth head didn't mess that one up too......of course look what I have found out that was missmatched on that chassie already......

DBrown · Post by **DBrown** » Thu Mar 31, 2005 5:26 pm

well, I know this post is old but where is my second attempt with the second housing.

pinion depth = 26(I tink it was an hour or so ago)
BL = 8

DBrown · Post by **DBrown** » Thu Mar 31, 2005 5:30 pm

the bottom pic is kinda hard to see......the pattern is actualy a little wider then it looks. the coast is a little close to the toe but I am afraid to put it any closer because of what the drive side looks like. the drive side is nice and centered and large.

Post by **Nobody** » Thu Mar 31, 2005 7:31 pm

It looks like you've learned a thing or two.

I don't like the coast side, I think it's too high on the tooth. Drive side looks pretty good.

This one is a tough call. I think I would go a touch deeper with the pinion, .023" or so. I think in some cases it's acceptable to play with the BL for fine tuning.

DBrown · Post by **DBrown** » Thu Mar 31, 2005 8:10 pm

cool, I think I will give it a try in the morning and post some more pics.

that other 3rd is a lot better! with the caps torqued the adjusters turn I am assumeing that is the way it is supposed to be. I only had to clean up the casting on the pinion support, just by trimming the casting shift. I also got lucky by getting the middle grade case again and not the WAR case. I just reused the pinion part of the housing because I had already had everything set up. the orther 3rd was even a 31spline so I now have an extra set of axles incase of breakage.

DBrown · Post by **DBrown** » Fri Apr 01, 2005 7:19 am

ok, you were right......

I was off a little on the last post I was at 21 on the pinion depth, so I lowered it and this is what I got. the coast side is still to the toe of th tooth but it is looking a lot better....covers about 75% of the tooth. the drive side is still looking good but it is moving tward the heal of the tooth as I move the pinion closer to the ring. I think this might be where I stop.

pinion depth: 18
BL: 8

Post by **Nobody** » Fri Apr 01, 2005 7:45 am

That looks pretty damn good.

Centered top to bottom is more important than heel to toe. And of course you're always looking for a big rounded pattern with soft edges.

I think that's a perfectly acceptable pattern.

DBrown · Post by **DBrown** » Fri Apr 01, 2005 8:24 am

thanks for all the help with this, now if it will just quit raining so I can reinstall.....