Tanner's 1996 Landcruiser Nitro 488 gear install and ARB RD142 |
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(50 BIG pics loading) |
July 5 2016 |
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Tanner contacted me about regearing his Cruiser and adding in ARBs on both ends. I sent him the suggested procedure and, in no time, 2 totes arrived loaded with 3rds/lockers/gears/masterkits from JustDifferentials.com |
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The rear 3rd will be completed first.....and here is the link for the front install. |
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Both bearings caps are removed and the 2 pinion open case put off to the side. The ARB in the background will replace it. |
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Push the pinion out. |
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Old seal is pried out. |
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Old races removed and new Koyo races tapped in. |
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Making sure that it is 100% all the way in. |
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New outer race is tapped in..... |
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....and, same thing, it is verified to really be seated down 100%. |
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It now waits at the pinion install station. |
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The Nitro master kit has a decent pinion selection to work with. |
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A .060" starter shim will be tried with the Nitro 488 pinion. |
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A really good use for a bunch of old bearing inners. |
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This is just a preliminary paint test so no crush or solid collar yet. |
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On to the arb....both surfaces were checked for high spots and all looked good. |
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I could have used the press.....it was a tight fit as is the case with almost all ARBs. |
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But, with a few dozen hits, it worked its way down. The 12 bolts were placed just perfect. |
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81 ft/lb and red locktight. |
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Carrier bearings were a nice tight fit but went on smoothly with the press. |
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Skipped a few pics but basically put the ARB case in....snugged the carrier bearings up.....got the backlash set to about .007". As shown above the drive side pattern is a bit shallow. |
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Coast agrees. |
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Drive side on a reverse painted tooth makes it more obvious that it is shallow and favors the edge. |
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Drive side on the pinion tooth....shows the lower comet tail is tucked into the root too hard. |
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So, tear it back down.....off with the pinion bearing. |
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And this time, the solid collar is inserted and on the 3rd try a .046" shim was the winner. |
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Just .003" deeper and it looks so much better. This is exact depth. |
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The comet tail is shifting out to center a bit. |
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Seal check. |
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I have had some seals that pushed on so hard that I had to substitute something else in its place. This one went on with some resistance but not so much that it starts a fire from the friction. |
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Best seal installer I've ever had.... |
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Aluminum based anti-seize. |
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Tighten until proper PPL is reached...in this case, 12 in/lb start torque. |
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Ding! and the pinion end is complete. |
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This end is pretty much very straight forward. :) Wheel adjusters are carefully lined up in the proper threads. |
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I tightened these 4 bolts to 75 ft/lb because there is an ARB in this equation. |
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Total preload was measuring right at 20 in/lb start torque. |
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One final tweak and tightened the ring side adjuster wheel 1 notch and then the backlash was right in the zone. |
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Last of the ARB parts to be installed. |
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I just finished form fitting the soft copper tube in place. |
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Now the 2 lock tabs are tightened to 10ft/lb and a little more for good measure. |
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ARB is pumped up to 100 psi and this one was left setting overnight and still had 100 in the morning. |
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Nice picture |
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Final snapshot of the assembly notes. |