quadra drive - JeepForum.com

 
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post #1 of 9 Old 08-15-2009, 01:40 PM Thread Starter
bayer
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quadra drive

i have a 2004 grand Cherokee limited. i went wheeling with some friends today, and we noticed that when im in 4all time. that my front wheels dont work but in 4 Lo everything works fine. is this normal?

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post #2 of 9 Old 08-15-2009, 04:03 PM
gatorayde
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They won't be 100% locked but the front wheels should be turning a little bit. If they do not spin at all when in 4wd full time, then something in your T case is bad.
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post #3 of 9 Old 08-15-2009, 08:59 PM
MarkoPo
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You should be using the four wheel part-time, that locks the front and rear axles together.

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post #4 of 9 Old 08-15-2009, 09:13 PM
gatorayde
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Quote:
Originally Posted by MarkoPo View Post
You should be using the four wheel part-time, that locks the front and rear axles together.
247 transfer cases only had two options: 4WD full time and 4LO
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post #5 of 9 Old 08-16-2009, 01:16 AM
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It sounds like the clutchpack or however it is the 247 works to limit slip is worn out. When that happens, it remains in 2wd all the time. 4w-low in the 247 reverts to the old true lock like the 242 and second gen 249's had. It bypasses the limited slip stuff. I don't know all the ins and outs of it, just the basics.

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post #6 of 9 Old 08-16-2009, 05:36 AM
ruggedscotsman
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The 247 transfer case (Quadradrive) uses a gerotor pump that senses speed difference, not torque, between the front and rear axles. In 4alltime the rear wheels get all the power until they spin faster than the front, and then power is progressively transfered to the front. 4Lo locks both axles together at a 2.72 reduction gear. Unless you were spinning your back wheels, the front won't have any power.
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post #7 of 9 Old 08-16-2009, 06:18 AM
comptiger5000
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Snow - That's a pretty likely answer. I second that.
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post #8 of 9 Old 08-16-2009, 06:27 AM
sandman
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what your explaining is normal.

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post #9 of 9 Old 08-16-2009, 06:36 AM
skain8
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Quote:
Originally Posted by sandman View Post
what your explaining is normal.
x2. If you left it in 4 all time, your front wheels wouldn't "work" unless they had to.

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