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Scott, from Charlotte North Carolina, has an '86 Runner that has been making some growling noises
out of the rear 3rd. He figured now's a good time to do a re-gear and maybe add a locker.
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Motive 488 gear. My gear of choice(I also like Precision).
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Master install kit.
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The Lockrite locker will go into the open case.
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Extra springs were included.
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Lockrites go in very easy....knock the pin out.
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Both thrust washers measured .067" so it's ok to mix them up from side to side.
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The locker went in so quick there was no time to get a pic of it :) I'm using a pair of
screwdrivers to keep the clutches apart for the spring install.
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The small spring goes inside the bigger one....
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I used a scribe and they went in very nicely.
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I installed the power pin and the hardened dowel. Here, I give it a WAP with a prick punch to confine the dowel inside.
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...
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I measured the distance between the 2 clutches and found it to be .158" which was well within the specification
of .145~.170
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File the surfaces, loctite, and tighten the ring gear to 75 ft/lb.
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These are the good 10.9 hardened ring bolts.
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Both the inner and outer races are pressed in at the same time.
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Time to add the shim to the pinion. The starter shim will be .077"
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Because the shims have such a wide shoulder, that means it's a PITA to use a bearing separator if re-shimming is
needed.
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The solid collar is added with a shim pack of .060"...
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I had to remove the pinion 5 times to get the pinion pre-load at the target 12 inch/pounds with a final shim value of .050". This is more
trouble than if I were to use a simple crush sleeve but this leads to a better quality gear install.
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First pattern check looks shallow.
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...
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The pinion is looking DEEP which means the ring gear is SHALLOW.
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The new race is pressed in the carrier so this old race will suffice in removing the inner pinion bearing.
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The Randys Ring and Pinion puller actually pulls from the cage. Amazing that it works so well.
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This Harbor Freight electric impact($99) 3/4" drive generates 400 ft/lb. and makes quick work of getting the stubborn bearings off.
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Off comes the undamaged bearing...
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I added 5 more thou and this is what I get....Bingo.
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...
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150 ft/lb of carrier bearing pre-load...
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75 ft/lb for the bearing caps.
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Loctite and 10 foot/pounds on these little guys.
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New seal is in and the rubber lip is lubricated. Check inside the hole
to verify that the super fine spring did not pop out from behind the seal lip.
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The original pinion flange looked rough so I used a new one.
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Red Loctite and a 4 foot bar will keep this flange tight ;)
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I support the bottom of the nut before dimpling it to prevent any outer race damage.
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I typically date code the ring gear and might add specs to it.
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I am almost ready to send the 3rd back to Scott in one of these nifty 10 gallon totes. I purchased these from
Walmart for $3.46 each....an amazing deal and perfect for sending 3rds in.
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But, first, to spray paint the 3rd...
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One adhesion undercoat and a coat of Krylon gloss black.
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I cut up larger boxes and have about 6 plys on the base floor....
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Put the 3rd in and line the sides with about 3 ply...pack some on top and it's ready to go :)
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