arb install question

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Joined
Feb 14, 2009
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Location
Portland, Oregon
i pulled the hubs, the drums, and the bearings. Do i need to pull the axle hub where it has six bolts and wire holding it in place?
 
Do you mean the spindle in front? Yes you do if that's what your talking about. Otherwise the axles won't pull out. Don't need to pull knuckles though
 
you might want to pay some one to do this if you have question this far along
 
i pulled the hubs, the drums, and the bearings. Do i need to pull the axle hub where it has six bolts and wire holding it in place?




I hope there is eight bolts and not six.... :eek:
 
ok, you caught me...

there are 8 bolts, and then the spindle comes off , and then the axle pulls. yes, i got it.

pulled the ring gear, and am oven heating it now.
 
pulled the ring gear, and am oven heating it now.



I take it from your post that you are reusing your old ring and pinion?


Is your ring gear threaded, or do your ring gear retaining bolts pass through the holes in the ring gear and have nuts that thread onto them to secure the ring gear to the carrier/ARB?
 
old ring gear is ...

pass through. and mounted nicely to the ARB Locker. Today i need to fab up a more secure way to torque the ring gear bolts and bearing cap bolts. Once it is secure, i can set the lash and spacing properly.
 
ok ...

here is the scope. Pre measurements of backlash were .008, .009, .0075, and .0085. Did not check the pinion to ring gear engagement. Had the carrier bearings installed and then tapped the housing for the air line.

installed the locker/ring gear assembly after torque of ring bolt/nuts. followed ARB list and then set the back lash to zero. tightened the bearing caps a bit more from finger tight, and backed off the adjustment cap on the ring gear side by 1/4. Torqued the bearing caps. Re check of the backlash shows .006, .006, .007, .0075. All in spec of factory settings of 6-10 .000's. installed the quad ring seals and set the adjustment caps with the lock hook. formed the copper tubing to the bulkhead fitting with hands to a finger distance between tubing and moving parts. used bearing feeler guage to check pinion to ring gear depth and it looks very well engaged, could not find a spec on this. checked the pinon to ring gear alignment, and it was very good for my taste. so spec there as well. measrements with gauge on four points was less than .001 alignment offset, although i admit readly that two of my strips ran in a bit but were still flattened uniformly through the gear. the tail stock, propellor flange, has a .021 arc at 12 inches. i taped a steel rule to the flange and moved it like i was checling the backlash. i think it is a close as i can get it to specification with the tools and work bench that i have. one more thing, the clip that secures the adjustment cap for the ARB air side was to big for the spot, i did some adjusting of its profile, and then spaced it back 1/8 inch with an additional lockwasher under the clip. the original cap has a rounded profile whereas the ARB cap is square.
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That airline does not look like it will work with that routing. You'll be at risk of circular sawing your airline with the ring gear.
 
I thought the air line went on the other side of the carrier:confused:

Heres mine, carrier looks different.

Edit: mines for c-clip axle... thats why its different I guess.
arb.jpg
 
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hmmmmm ...

ok, my air port is on the back of the ring gear, and the ARB instructions show the bulkhead fitting right where i got it. are you suggesting go behind the ring gear?

yes, your carrier is very different than mine, it is a RD142. ARB.
 
just took another ...

look. man there is no way to dress that line down near the pinion behind the ring gear. i suspect that ARB knew that when they had me do it this way. Well, we shall see further. i'll do a space test with a piece of cardboard to check the clearance when it is bolted up.

also, i poped the line with air pressure and it click's on right off, and then off.

and, of course, there is no way to turn around the carrier and ring gear to get the air port on the other side. :hmm::)

keep the info coming... i still got to do the rear end.:clap::clap:
 
Something just looks wrong. Are you sure the collar with the air fitting is on the correct side of the carrier?

If it is assembled correctly, then I think you need to move the bulkhead fitting to the other side of the 3rd member.
 
ok, my air port is on the back of the ring gear, and the ARB instructions show the bulkhead fitting right where i got it. are you suggesting go behind the ring gear?

yes, your carrier is very different than mine, it is a RD142. ARB.

Mines an RD124 I think. I would run the airline up higher before you go over the ring gear. It won't take much to dent the front pumpkin enough to squish the air line between the housing and the gear.

Poser should be chiming in soon, he will set us all straight!
 
for sure ...

the carrier bearing went down completely where the "air" might be able to go, and there would be no way to do otherwise. the shoulder of that end of the carrier was smaller too. so the bearing seated towards the center, and the air ring/tubing would not go further on.

Also, the set up showed that config.

man, i am sending a question to ARB downunder.
 
the carrier bearing went down completely where the "air" might be able to go, and there would be no way to do otherwise. the shoulder of that end of the carrier was smaller too. so the bearing seated towards the center, and the air ring/tubing would not go further on.

Also, the set up showed that config.

man, i am sending a question to ARB downunder.

Call or email Nils the tech guy if Poser doesn't lay down the law here. His number and email is on ARB's contact page.
 
also ...

the only air port on the carrier was on that end. I just looked at the install specs, and the picture at the end shows the adjustment cap and the air ring right where i have them. the picture does not show a routing schematic. just says to leave a big loop as you go over the ring gear. well, i got that for sure.

wahoooo. here we go.:hmm::hmm::hmm::hmm:
 
ok, this just came to me ...

i take a can of spary foam insulation, double bag the inside of the axle where the diff bolts on, fill the bag creating a mock up of the space available, then make a cover over the space mock up and see if my air line needs to go somewhere else. shouldn't take more than a few days to get it done, and then i know for sure what's going to happen when i bolt up the front pumpkin.:hmm::):)

here is another one, once i get that mock up done, i can drill and mount a feedthru for pulling the airline away from the ring gear, avioding the whole unkown.:clap::clap:
 
just use some prushian blue on the air line and test fit it. If it hits the housing it will transfer. Put it up high though.
 
thanks ...

for the new idea. saved me a mess.:clap:
 

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