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post #1 of (permalink) Old 02-16-2001, 03:18 PM Thread Starter
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set up

I going to put a locker in the rear of my jeep this weekend and was wondering how do I set up the backlash & preload on a dana 44 also what are the tolerance

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post #2 of (permalink) Old 02-16-2001, 04:09 PM
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Re: set up

What kind of locker. Since you are needing to reset the backlash and bearing preload, I assume a Detroit? With the 44 you will need a set of dummy bearings, otherwise you will drive yourself crazy (and probably ruin the bearings in the process). You will also need a set of shims and a dial indicator. To make a set of dummy bearings, take the bearings that are currently on your carrier, remove them with a press carefully, not screwing up the cage, and hone them out just enough so you can slip them on and off without a press. I normally set bearing preload so that the assembly has to be tapped back into the diff case, NOT hammered, just tapped in, not slide in either...pretty tight fit. The R&P backlash is usually .004-.008. If you are installing a Detroit set it to the tight side of the tolerance, try to get .004. Reason for that is the built in backlash of a Detroit is slightly annoying, but it will be amplified by R&P backlash. The backlash is measured with the carrier assembly in the case, you need to hold the pinion still and with your dial indicator on the ring gear, measure the amount the ring gear can turn without turning the pinion. Hope this helps. [img]/wwwthreads_images/icons/cool.gif[/img]

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post #3 of (permalink) Old 02-16-2001, 06:45 PM
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Re: set up

pinion preload:
are you changing your Ring/Pinion? of course it don't have to come out with just locker install. i leave them alone if the rear has low mileage (or your on a low budget and the bearings feel fine after the carrier is removed) If you remove your pinion to replace the seal and want to re-use your old bearings the preload will be different than if you use new bearings.

as far as backlash, i set them up different if they are new or used gears, (and also some brands are different)
FYI if your putting in a Detroit, take away about .004 of each side of the carrier for your first try, (if you just reuse the old shims it will be too tight, and you could mess up the housing were the bearing races ride)

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