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FWD only on Volcano S40

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Old 02-10-2014, 11:17 AM
  #1
JonKBMW
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Default FWD only on Volcano S40

So I was ripping around in the semi snow/ice the other day and I was doing well - then, yesterday I went to drive the truck around and realized it was pretty slow from a stop on the street. Then I went in the snow/ice again and realized I only have FWD. I looked at the truck quickly and the front and rear driveshaft are present, but the rear input to the diff isn't connected. Meaning, I can rotate the rear wheels and see the input move separate of the driveshaft. It almost looks like the part the driveshaft connects to is broken. It's still there, but not hooked to anything as the shaft and wheels move separate of one another. Do I need a new diff? Or, maybe the driveshaft cup?

Thanks,
Jon

oops: title should say S30, not S40 doh

Last edited by JonKBMW; 02-10-2014 at 11:51 AM.
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Old 02-12-2014, 08:10 AM
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Redcat James
 
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Are you talking about the drive cup for the center drive shaft? If so it could be as simple as the set screw falling out. You could just install a new set screw with loctite and that should fix your problem. Just make sure the set screw is tightened down on the flat spot of the pinion shaft so it doesn't slip. if you have more questions you could give us a call (602)454-6445
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Old 02-17-2014, 09:12 AM
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WakeRider93
 
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This happened to me last week in the snow. It ended up being the set screw. Ran up to ace got a M3 or maybe M4 grub screw and got it back up in 5 minutes.
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Old 02-18-2014, 06:20 PM
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JonKBMW
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Quote:
Originally Posted by WakeRider93 View Post
This happened to me last week in the snow. It ended up being the set screw. Ran up to ace got a M3 or maybe M4 grub screw and got it back up in 5 minutes.
Yep - this was it. My grub screws were still in there, just needed to be tightened up and loctited.
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