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  #1  
Old 12-23-2014, 03:47 PM
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Quadra drive popping, humming front end area.

So during summer i replaced my steer axle hub bearings and half shafts all new. Filled diff with oil and a bottle of mopar slip additive. Removed my front drive shaft and drove it as a 2wd. Now come winter, i replaced the u joints on the shaft installed it and drove off at a idle speed and at the end of the parking lot i took a slow right turn and ,POP!POP!POP! UNTIL WHEEL is straight again. I have this issue at turning no matter what speed or rpm. Its a distinctive gun shot popping noise.

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  #2  
Old 12-24-2014, 06:17 AM
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Re: Quadra drive popping, humming front end area.

Is there any change in the noise when you put it in 4-Lo?
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Old 12-25-2014, 09:59 AM
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Re: Quadra drive popping, humming front end area.

On drive pavement, the wheels don't have the opportunity to slip when turning. For example, when turning left, the right front wheel will turn more revolutions than the left front wheel due to it having to travel a longer distance. Since the axles are not turning at the same speed, something has to give (in slippery conditions, the tires provide the slippage). The loud popping / jerking you hear & feel is the drive train trying to cope. Damage to your system will ocurr if you continue to leave it in 4x4 on dry hard pavement.
Mike S
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Old 12-25-2014, 10:47 AM
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Re: Quadra drive popping, humming front end area.

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Originally Posted by Mike Sal View Post
On drive pavement, the wheels don't have the opportunity to slip when turning. For example, when turning left, the right front wheel will turn more revolutions than the left front wheel due to it having to travel a longer distance. Since the axles are not turning at the same speed, something has to give (in slippery conditions, the tires provide the slippage). The loud popping / jerking you hear & feel is the drive train trying to cope. Damage to your system will ocurr if you continue to leave it in 4x4 on dry hard pavement.
Mike S
That's true for a standard 4wd system (something like Selec-Trac). But Quadra-drive is a full time 4wd system that's used on dry pavement. If you look at the drive selector there are only 3 options: 4 All Time, Neutral, 4LO. There is no 2wd option
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Old 12-25-2014, 11:04 AM
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Re: Quadra drive popping, humming front end area.

Also the limited slip additive which he added to the fluid should take care for a not completely locked vari lok, so that turns can be made without wheel hop.
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Old 12-26-2014, 07:20 PM
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Re: Quadra drive popping, humming front end area.

Exactly. It only happens in hard turn or parking lot tightness. With front drive shaft removed its all fine and dandy. So its either spider gear or the varilok. Now is it repairable or what options do i have
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Old 12-27-2014, 12:39 AM
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Re: Quadra drive popping, humming front end area.

I remember when my '75 Jeep J10 truck w/ quadratrak (full time 4x4) would start to pop & jerk (during turns) when the special oil in the xfer case would wear out. An oil change (with the special lubricant) & then driving in figure 8's in a big parking lot (to work the lubricant into the clutch plates) would cure the problem. Can't remember now how many miles I could go between lubricant changes.
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Old 12-27-2014, 07:46 PM
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Re: Quadra drive popping, humming front end area.

Ill try that. The oil is black and smells like death, but i thought it was still working due to the all time being engaged. I removed the front shaft and now i am 2wd but seems like it sucks more fuel.
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Old 12-27-2014, 08:16 PM
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Re: Quadra drive popping, humming front end area.

Actually your mileage should be better without the driveshaft. Your spending less energy to turn the front axle.
Mike S
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Old 12-30-2014, 09:26 PM
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Re: Quadra drive popping, humming front end area.

Must be the shitty gas then cause it drinks dat fuel
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Old 01-17-2015, 03:30 PM
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Re: Quadra drive popping, humming front end area.

Hang on a minute... you drove it all summer with no front shaft? If you've got the NV247 you may have killed the t-case by doing this. I'm pretty sure the 247 relies on the front shaft spinning to lube the internals of the case.
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Old 01-17-2015, 03:38 PM
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Re: Quadra drive popping, humming front end area.

Quote:
Originally Posted by Category 5 View Post
Hang on a minute... you drove it all summer with no front shaft? If you've got the NV247 you may have killed the t-case by doing this. I'm pretty sure the 247 relies on the front shaft spinning to lube the internals of the case.
Never heard of this. When you remove the front prop shaft, the output from the T-case rotates normally, only without transfering torque. I drove some time without my front prop shaft and no problems at all.
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