TruTrac locker for the Titan? - Page 6

bestatchess · 11-04-2005, 12:27 PM

Titan rear carrier:

http://pg.photos.yahoo.com/ph/mikesh...52.jpg&.src=ph

http://pg.photos.yahoo.com/ph/mikesh...4f.jpg&.src=ph

O4DRUNNER · 11-04-2005, 06:15 PM

Well i got mine orderd this morning........hope for install tuesday or wed,

the shop i am using has been around for over 30 years,,, he has installed so many of these he lost track,,, and has no problems with the true trac,,,even with 700 horse power trucks,,, so i am not worried one bit about them digging into the beast...........

Hawaiianbasshead · 11-04-2005, 08:14 PM

congrats

looks as though I was the first to order you'll be the 1st to have it installed :sticks toungue at 04DRUNNER: its ok. I should've known for posting it here LOL

O4DRUNNER · 11-04-2005, 09:35 PM

Quote:

Originally Posted by Hawaiianbasshead

congrats

looks as though I was the first to order you'll be the 1st to have it installed :sticks toungue at 04DRUNNER: its ok. I should've known for posting it here LOL

Well the joys of the mainland,,,,,,i also get to spend $682.00 first,,, lol

I am getting the part for $507. and the install for $175.

the better price is because a work for a dealer ,,, and he is only marking it up 15%....

Batman229 · 11-04-2005, 11:03 PM

keep us posted! I hope it works.

bestatchess · 11-05-2005, 08:38 AM

Yes, I am very interested. O4DRUNNER, I was wondering if maybe you could ask your installer to note the post-install lash measurement?

I found a very interesting web page about truetracs being used to fix weak rear land rover differentials. Here is the part I found interesting:

"Another standard differential breaks from wear and tear. Note that the pin that holds the two pinion gears is broken and one end of the pin protrudes from the carrier. Unfortunately, this is all to common on the stock differentials. The harder the trail, the more spinning and bouncing one must necessarily do to overcome obstacles because of the low traction provided by open differentials. This puts a tremendous amount of strain on all parts of the vehicle, but especially the differential. If one wheel is spinning and suddenly receives traction, the torque is violently sent to the opposing wheel on the axle. This is the result."

https://www.expeditionexchange.com/t...ndexmain.shtml

bestatchess · 11-05-2005, 09:00 AM

Quote:

Originally Posted by O4DRUNNER

Well the joys of the mainland,,,,,,i also get to spend $682.00 first,,, lol

I am getting the part for $507. and the install for $175.

the better price is because a work for a dealer ,,, and he is only marking it up 15%....

Does the $507 include new bearings?

ptgarcia · 11-05-2005, 01:06 PM

Spinning and bouncing with any differential could cause it to blow. And if the diff doesn't, something else will, like an axle shaft or hub, for instance. Its just not good to bounce the rear.

bestatchess · 11-05-2005, 03:15 PM

Assuming that you can get the truetrac with the carrier bearings already pressed into place as shown here:

https://www.expeditionexchange.com/t...ndexmain.shtml

I was looking in the service manual to evaluate the possibility of doing this in the driveway. First thing I noticed is that the manual is very emphatic about replacing the axle oil seals any time the axles are removed.

Those are $20, no problem. (Is your local shop wise to this or are you going to have leaky axles?) Also, the local shop had better be using 75-140 synthetic and not the cheap stuff.

http://www.trademotion.com/partlocat...04&catalogid=1

Next, it looks like you need a special tool to adjust the carrier bearing spacers in the event that the backlash is not in spec after you get the ring gear bolted up to the truetrac and the truetrac in the diff case. They appear to be Chrysler style threaded adjusters. Very cool (no shims for the carrier bearings and allow precise adjustment), but you apparently need a special tool with a very long extension to adjust them through the axle housing tubes if the backlash is out of whack. See pages RFD 11 (adjusters 12) and RFD - 25 in the service manual. (Tool ST-354-1003).

Does your 4x4 shop have this tool? Maybe the Chrysler tool that they already have work for this?

Obviously you will need a dial indicator to check the backlash. I was thinking I could rent one or borrow one for the weekend from the highschool autoshop teacher for a case of beer. And of course a torque wrench.

So, it would appear that it would be pretty easy to do in the driveway, but only if the ring gear backlash happens to fall within spec after you bolt the ring gear to the truetrac and mount it back in the case. And the backlash spec is a pretty narrow range: 0.003 to 0.005 inch or 0.08 to 0.13 mm

So I think I have convinced myself to look for a shop.

ptgarcia · 11-05-2005, 03:46 PM

Yeah, this is definately something I won't even attempt. By the way, the shop I usually go to (its a diff only shop) said they won't touch the Titan yet.

bestatchess · 11-05-2005, 04:29 PM

Quote:

Originally Posted by ptgarcia

Yeah, this is definately something I won't even attempt. By the way, the shop I usually go to (its a diff only shop) said they won't touch the Titan yet.

Now I am really running scared. I am wondering if anybody has actually worked on a Titan rear differential yet as in all the posts about failed rear differentials, it seems that the dealer replaces the whole rear axle assembly.

Austin · 11-06-2005, 12:18 AM

Quote:

Originally Posted by bestatchess

Now I am really running scared. I am wondering if anybody has actually worked on a Titan rear differential yet as in all the posts about failed rear differentials, it seems that the dealer replaces the whole rear axle assembly.

My dealer is giving me back the failed axle. The new one should be here Monday or Tuesday, so I should have an autopsy report by next weekend.

Hawaiianbasshead · 11-06-2005, 02:04 AM

can't wait to hear what you find out.

I'm going to ask for mine as well.

Hawaiianbasshead · 11-06-2005, 02:06 AM

Quote:

Originally Posted by O4DRUNNER

Well the joys of the mainland,,,,,,i also get to spend $682.00 first,,, lol

I am getting the part for $507. and the install for $175.

the better price is because a work for a dealer ,,, and he is only marking it up 15%....

Joys of the mainland? where are u from? people up there don't call it mainland I noticed... Thats like me saying I'm from the Hawaiian Islands as opposed to Hawaii lol. late

bestatchess · 11-06-2005, 06:10 AM

Quote:

Originally Posted by Austin

My dealer is giving me back the failed axle. The new one should be here Monday or Tuesday, so I should have an autopsy report by next weekend.

Interesting. I am trying to figure out what it takes to properly install a truetrac lsd. I am unclear on the tool to adjust the carrier bearing lash.

If you look at this photo, it shows the carrier with bearings and the circular bearing races lying next to the carrier:

http://pg.photos.yahoo.com/ph/mikes...752.jpg&.src=ph

In this photo, the adjusters (with the holes) are located just outwardly of the carrier bearing races:

http://pg.photos.yahoo.com/ph/mikes...44f.jpg&.src=ph

Here is a site that describes installing a locker on a Chrsyler axle:

http://www.4wheeloffroad.com/brandpages/dodge/67198/

It describes (but does not show) adjusting the ring gear lash by using a special tool on the carrier bearing adjusters:

"A special tool is inserted down the axletube to adjust gear backlash and bearing preload. Tighten each ring adjuster for a tad of preload on the bearings, then use them to move the ring gear closer or farther away from the pinion gear to obtain the correct backlash, usually 0.004-0.007 inch as measured with the dial indicator. Paint the teeth with marking compound and verify that the pattern is acceptable for smooth and quiet operation. Tighten up the side adjusters for proper bearing preload, and insert the lock plates to finish it off. If you aren’t familiar with this process, you might want a professional to dial this stuff in."

I think we would need to do somethng similar on the Titan and I was wondering if the tool would be the same as the tool for the Chrsler axle

http://completeoffroad.com/products/...6176de7b333149

cheaper here:

http://www.rubicon4x4.com/catalog/ch...l-p-16692.html

or if a special Nissan tool is actually required.

Even if you go to a shop to get the install done, are they going to have the tool, or, lacking the tool, will they skip the step of adjusting the lash, and just slap it back together and hope for the best?

Maybe you can take a picture of the adjuster?