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Marc's out of El Segundo, California and sent both diffs for a 488 re-gear. Solid
collars and new master kits were included. This link shows the front 4 cylinder 3rd being set-up.
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The carrier bearings slipped on loosely so 2 drops of this sleeve retainer compound would lock the
bearings in place.
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Compression was used overnight to allow the compound to set-up.
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.056" for the solid collar shim value turned out to be the right value
to give 15inch/pounds of pinion drag. The 080 pinion shim was not so lucky...
I had to change it twice again to get the correct depth.
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The Park Tool TW-1 makes pinion pre-load measurements so easy. As many times as I've done this, I
still use the tool for every install.
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Red Loctite 272 and 75 ft/lb of torque.
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deep
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deep
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A complete teardown has to be done to change out the pinion shim. This tool makes quick work of removing
the inner pinion bearing.
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The bearing is actually pulled off by the 360 degree capture of the race cage itself.
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Better but still deep.
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deep
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right on the money.
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good.
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Getting the BL set to 007 and getting the CBPL at 150 ft/lbs is a little time consuming because, half the time, it's
generally done with the bearing cap bolts about 1/2 turn loose and numerous hits with the hammer to set the
bearings. Then when the bolts are tightened, the BL changes a little....then loosen the bolts and crank the
tension in the direction needed to bring the BL in spec. and hope it falls in the range desired.
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Sometimes, when rapping the seal in with a hammer, the tiny circular spring on the underside of the seal falls out. Always
eyeball down the center to see if it did. This has happened twice to me that I know of.
Here, I'm using some gear oil on the seal lip to prevent a dry start-up.
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The confidence level is very high that the pinion will stay tight...forever. Solid collar is
the only way to go. 200 ft/lbs and red Loctite #272 keep it tight.
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A little black paint and it's heading back to Marc :)
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