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 Auto hub 4 whl no work, is there a manual test method?
#924745
01/09/09 04:43 AM
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Joined: Oct 2007
Posts: 11
OP
Need a Spot
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The front driveshaft turns but doesn't get to the wheels. I've read the article about taking out the ADD front diff system but that's too involved for initial testing. Is there a more simple way to give or take vacuum, or??, to manually activate the auto system. Thanks
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Re: Auto hub 4 whl no work, is there a manual test method?
[Re: GTFD]
#924746
01/09/09 05:07 AM
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Joined: Jun 2005
Posts: 447
Mudrunner
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Yes the ADD gets vacuum on one side in 4WD and on the other in 2WD.
You can use manifold vacuum or a mity vac or any adhoc method you like to test it.
97 T100 4x4
97 328i
95 540i restoration project
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Re: Auto hub 4 whl no work, is there a manual test method?
[Re: eleet]
#924747
01/09/09 10:01 PM
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Joined: Oct 2007
Posts: 11
OP
Need a Spot
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Found a broken vac line from rubbing on the axle. Maybe I'll get lucky for that easy fix. Won't be able to test until some other road worthy issues are taken care of.
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