Rear Diff. blowup

[ksimpsy]

sign me up! I haven't had mine blow up but $200 is cheap considering the cost of a new diff.

[rocmoc]

Lenny, does the $90/diff include shipping? Do you take MasterCard? (LOL!) I will take TWO for my Trooper.

rocmoc n AZ/Mexico

[plumber]

Lenny I want one for my front and rear I will need written instructions on how to properly set up my diff pm me with address and how much I need to send you

[Guest Lenny]

Lenny, does the $90/diff include shipping? Do you take MasterCard? (LOL!) I will take TWO for my Trooper.

rocmoc n AZ/Mexico

Yes on the shipping and no on the Master card. Also just found 12.9 metric grade bolts. I'll be using them instead of 10.9.

Thanks

Lenny

[Guest Lenny]

Lenny I want one for my front and rear I will need written instructions on how to properly set up my diff pm me with address and how much I need to send you

Will do and will send instructions when I get them done. Will wait until I get my supplies and get my dif done. Want do pics of process with instructions. It will probably take a week or so to pull everything together.

thanks

Lenny

[4x4x454]

I will want the kit also but I have to come up with the money so i will need some time.

[ksimpsy]

How about PayPal for the money?

[Guest Lenny]

How about PayPal for the money?

PayPal is fine. Wait until I get everything pulled together. I keep everybody informed.

thanks

Lenny

[Paiute3]

Lenny,

We'll need two but not until late fall.

Cinda

[rocmoc]

Lenny, no hurry. I'm not going to have time to work on the trans until July/Aug so the diffs are after that. Just let me know when you are ready. You know I was kidding about the MasterCard but I will take you up on the PayPal. Do you have an installed price, not kidding?

Thanks,

rocmoc n AZ/Mexico

[Guest Lenny]

Lenny, no hurry. I'm not going to have time to work on the trans until July/Aug so the diffs are after that. Just let me know when you are ready. You know I was kidding about the MasterCard but I will take you up on the PayPal. Do you have an installed price, not kidding?

Thanks,

rocmoc n AZ/Mexico

Ya, I can install the kit. Price is $23,465.00. How many do you need done. I'll be glad to drop any and all of my important obligations and projects and jump right to it. Sorry, truthfully, I pretty well keep myself covered up. Don't have the time nor do I really care to get that involved. Don't worry about me getting the kits too quick. Already bogged down in finding sources for everything. Close though. Before I send any out, I have to do mine and document all the steps with lots of pics. Have mocked mine up with quickly machined temperary spacers and like what I see but can't run it wih these. The kit will have a good selection of mix and match spacers so everybody can set up to the clearance they prefer. The instructons will show what clearances I am using for mine and what I feel is a good choice. But please keep in mind that I'm not a differential specialist but this diff doesn't take a specialist to dramatically improve it.

Thanks anyway for the installation offer.

Lenny

[rocmoc]

Lenny you made me chuckle. Where in the world did you come up with that number, $444.44 would have been enough. I know what your are saying about being buried in projects, that's why the Trooper is sitting in the garage still broken from Moab. I have projects with parts I bought over 10 years ago that have not even been started and I work on something everyday.

Take care and holler when you're ready,

rocmoc n AZ/Mexico

[Kinarfi]

Hey Rocmoc, I'll give you a good deal and come do it for 1/2 that amount, I don't mean $222.22 , I'll take my front diff out and do all the work on it and then bring it and my new diff down and replace yours.

Looks like I finally get to see for myself if the front and back diffs have the same gears, Pictures when I take them.

Kinarfi

[rocmoc]

Kinarfi, two for $222.22! I am sure Lenny's instructions will be super along with pics and your pics should be easy. Finding time is the hard part. Currently I am rebuilding the wall between the garage & the living area in the Toyhauler. After 55,000+ miles, she was coming apart. Will finish this morning then I have to start working on the roof the the house for monsoon season. It never ends!

rocmoc n AZ/Mexico

Kinarfi, two for $222.22! That's not what I said and you know it!!!!!! But yes, it's not to tough of a job and we'll have lots of picts

Sorry for the edit. Kinarfi

[mlg]

Kinarfi, two for $222.22! I am sure Lenny's instructions will be super along with pics and your pics should be easy. Finding time is the hard part. Currently I am rebuilding the wall between the garage & the living area in the Toyhauler. After 55,000+ miles, she was coming apart. Will finish this morning then I have to start working on the roof the the house for monsoon season. It never ends!

rocmoc n AZ/Mexico

Kinarfi, two for $222.22! That's not what I said and you know it!!!!!! But yes, it's not to tough of a job and we'll have lots of picts

Sorry for the edit. Kinarfi

[mlg]

Hey kinarfi when you talked to the guy at Joyner did he give you any insight to what they might be doing to

upgrade their diffs ? Or are we on our own to do our own mods.

[Kinarfi]

Hey kinarfi when you talked to the guy at Joyner did he give you any insight to what they might be doing to

upgrade their diffs ? Or are we on our own to do our own mods.

Not really, but when I opened my new one and it had the same potential problems, I figure do and overdo what I can and hopefully, when I button it up this time, It will last as long as the one in my GMC Yukon. He did say to try and find what he called Jet Bolts, actually made for use in Jet engines which are super tough and have the heads whittled down to save weight, I've worked around some of the engines and know what he's talking about, just can't find them. That little screw felt like it had been tighten with a shirt pocket screw driver and maybe they didn't even hit the slot. I know it caused a fair share my damage. I do think what Lenny's coming up with will make things a lot tougher and durable. I can't recommend strongly enough to open your cases and check them out. a neat thing I did to get the cases to split is pump air in through vent pipe, pops it apart a good 1/4" or so.

Kinarfi

[Kinarfi]

Added a few more photos kind of like exploded views with some comments added into the photos of some things I did. Still need to do some photos of the spider set up and how they go together and sometimes, unfortunately, come apart because that little screw isn't tight enough and lock tited. Quit Preaching Kinarfi

[Guest Lenny]

Added a few more photos kind of like exploded views with some comments added into the photos of some things I did. Still need to do some photos of the spider set up and how they go together and sometimes, unfortunately, come apart because that little screw isn't tight enough and lock tited. Quit Preaching Kinarfi

The differential cone that houses the 4 little pinion gears is a soft machined steel. This means its mallable so where the large head is of the shaft holding the 1st 2 pinion gears, I'm going to use a center punch and punch it about 1/16" out from the hole edge to deform the hole. I'll do this in about 4 spots. Once done, the shaft cannot come out. To remove later, drive the head past the punch formations and it will come out OK. The little set screw on mine doesn't hit the groove in the pin. Catches it right on the edge of the groove so when I tighten it, it draws the pin too far to that side as the screw tries to get centered in the groove. This locked up the gears so I decided to eliminate the screw and go with the guarnteed punch deformation way. If you do this, make sure you punch deep enough so the deformed steel is clearly projecting into the hole, obstructing the pin head to prevent slide out. Don't get carried away but don't worry if you punch it a little too deep and the gears won't turn, just tap it a couple of times on the other end and it will let go of the gear binding.

So far, I havn't found a bolt, that is supposed to pass into or through a grove or slot, that actually is in the right place on my Trooper. Maybe we should export eye glasses to China. Maybe we could require that they work only with one hand, seeing as one hand doesn't seem to know where the other hand has put something.

Lenny

[4x4x454]

You know this is so F@%$ed up that they would not take care of it for you. I hate to say it but I am starting to get discouraged. I only got it last August put about 500 kilometers on it and the fuel tank broke now the diff. I waited 6 months for a tank now the rear diff thing if I have to get a new one it will be at least another 6 months. I think I will be calling Joyner again tomorrow and give them both barrels.

[Guest Lenny]

You know this is so F@%$ed up that they would not take care of it for you. I hate to say it but I am starting to get discouraged. I only got it last August put about 500 kilometers on it and the fuel tank broke now the diff. I waited 6 months for a tank now the rear diff thing if I have to get a new one it will be at least another 6 months. I think I will be calling Joyner again tomorrow and give them both barrels.

Bring an extra shell on my behalf. Hang in there. Were getting through the majority of the Troopers problems with good fixes. This machine is not for everybody, you better be willing and able to make some changes. That said, I like the Trooper. I think it has a lot of potential and I feel a lot safer in it then I would with any of the others. The Trooper is IMHO more stable by far. However the others are fine machines.

Lenny

[FlyCanadianGuy]

Im in for both diffs if your still making this "kit"

[Guest Lenny]

Im in for both diffs if your still making this "kit"

Have the bolts but still struggling to find all the required shims. Will keep you informed. Just need more time.

Thanks

Lenny

[FlyCanadianGuy]

Have the bolts but still struggling to find all the required shims. Will keep you informed. Just need more time.

Thanks

Lenny

Not a problem, work is hectic so I dont have the time for the Joyner (or the lawn, or the basement... new hot tub... upstairs washroom... ugh, it keeps piling up )

[Paiute3]

You know this is so F@%$ed up that they would not take care of it for you. I hate to say it but I am starting to get discouraged. I only got it last August put about 500 kilometers on it and the fuel tank broke now the diff. I waited 6 months for a tank now the rear diff thing if I have to get a new one it will be at least another 6 months. I think I will be calling Joyner again tomorrow and give them both barrels.

Did Joyner ever call you back?

[4x4x454]

Did Joyner ever call you back?

Have not even had time to call but I don't wait for a call back I talk to someone every time I call.

[ChrisG]

For those who had your diffs go, were there any indicators or forewarning of a problem? Now that I have secured my rear end I seem to hear grinding noises on occasion. Haven't determined if it is the diff or CV's.

[Guest Lenny]

For those who had your diffs go, were there any indicators or forewarning of a problem? Now that I have secured my rear end I seem to hear grinding noises on occasion. Haven't determined if it is the diff or CV's.

If all you did was to resecure it by better tightening the mounting bolts, that won't be enough. Rather you had any prior trouble or not, you need to take both diffs apart and upgrade them to the stronger better fitting bolts and bring gear clearance tolerances closer. The rear diff is propably the most important to do first as it gets used much more then the front. I'll have a kit for doing just that but It will be a bit before I get it pulled together. About a month. Read through all the prior post of this thread and you will see that there are a few things that could cause a scraping noise in the diff if that is where the noise is comming from. When I took my rear diff apart, the input pinion gear was chipped on the very outter edge of the teeth. After studying it, I've concluded that this was caused by the pinion gear being too close in towards the center of the big ring gear. Even though there was still up and down slop clearance between the gear teeth, the outter bigger part of the pinion gear teeth were engaging the ring gear in from the outter edge of its teeth rather then at it's outter edge where it should be. The more you move torwards the center of the ring gear, the teeth get closer together. With this miss alignment, the outter very corner of the pinion gear teeth were taking all the pressure and thus eventually started braking off.

Lenny

[ChrisG]

Well I guess I better sign up for your upgrade too then if you haven't filled the quota yet. I was going to let warrany solve the problem but I have a feeling they won't be as thourogh as your remedy. When the time comes maybe you can make one Canadian shipment to cut down on brokerage fees.

[rocmoc]

I will mention: After we broke the rear drive at Moab, we had to drive back to town with only the front drive. Never hear it before when in 4wd, but I was getting a clunking sound when I was letting off the gas and applying the gas. Makes me suspicious after reading Lenny's thread.

rocmoc n AZ/Mexico