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post #1 of (permalink) Old 10-25-2001, 01:29 PM Thread Starter
 
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Double Cardan Vibration using Hilux Axles

I just exchanged my rear samurai drive shaft or a front Hilux double cardan unit, I am running Hilux axles.

The drivetrain vibrations using the double cardan are extreme compared to the samurai driveshaft.

0) According to the Toyota manual the drive shaft is in phase.

1) The pinion is pointed up twards the pinion using axle shims.

2) The pinion is offset to the left of the transfercase output shaft/flange by 4 inches due to centered differential.

3) The splines on the shaft are tight.

4) None of the bearings in the driveshaft are loose when checking by hand. No slop !

5) Everything was recently greased (yesterday).

6) I rotated the shaft halves 180 degrees but it had no affect.

7) The vibration is at all speeds.

I asked a drive shop in Boulder, Colorado about using two double cardan's on a 20 in driveshaft.
The owner did not think it could be done without having a very short splined section.
Right now the tube is 3.5 inches long with the rest being the double cardan, yokes and spline section.
This is a short OEM factory driveshaft from a 1983 Hilux 4x4.

Any Suggestions !!!!!!


LoneZuk




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post #2 of (permalink) Old 10-25-2001, 02:03 PM
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Re: Double Cardan Vibration using Hilux Axles

Is the rear diff pinion pointing directly at the output of the t-case?

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post #3 of (permalink) Old 10-25-2001, 03:13 PM
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Re: Double Cardan Vibration using Hilux Axles

Make sure the diff is pointed at the t-case as Tim said.
It makes a huge differnce. also when you had the driveshaft
out did you check the bearing in the center of the double carden? If that is loose or siezed then you will have problems too. NAPA has the center bearing btw. Pain to replace on some of them. Good luck

Glenn
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post #4 of (permalink) Old 10-25-2001, 03:28 PM
 
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Re: Double Cardan Vibration using Hilux Axles

Exactly how you connected the Toyota driveshaft to the Samurai transfer case flange?

Also check for worn slip-yoke splines.

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post #5 of (permalink) Old 10-25-2001, 04:38 PM
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Re: Double Cardan Vibration using Hilux Axles

The Hilux rear axle is a centered diff right? the downward angles might be in phase but its the ones that offset it that are probably doing it. Same thing here, except Sidekick rear with a toy front DC shaft

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post #6 of (permalink) Old 10-25-2001, 04:39 PM Thread Starter
 
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Re: Double Cardan Vibration using Hilux Axles

Hi

Thanks for the info.

This is what I do know.

1) The pinion is pointed up twards the pinion using axle shims.

2) The pinion is offset to the left of the transfercase output shaft/flange by 4 inches due to centered differential.

3) The splines on the shaft are tight.

4) None of the bearings in the driveshaft are loose when checking by hand. No slop !

5) Everything was recently greased (yesterday).

6) I rotated the shaft halves 180 degrees but it had no affect.

7) The vibration is at all speeds.

I asked a drive shop in Boulder, Colorado about using two double cardan's on a 20 in driveshaft.
The owner did not think it could be done without having a very short splined section.
Right now the tube is 3.5 inches long with the rest being the double cardan, yokes and spline section.

TIA

LoneZuk




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post #7 of (permalink) Old 10-25-2001, 04:46 PM Thread Starter
 
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Re: Double Cardan Vibration using Hilux Axles

DougO

Do you have a vibration problem or did you have one ?

I think that the double cardan takes care of the drop like you said but not the offset of the differential.
The double cardan cancels itself and the other end does not have a mate for the offset.

LoneZuk

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post #8 of (permalink) Old 10-25-2001, 05:00 PM
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Re: Double Cardan Vibration using Hilux Axles

WHEN do you have the vibration. All the time, acceleration, or deceleration?

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post #9 of (permalink) Old 10-25-2001, 05:14 PM
 
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Re: Double Cardan Vibration using Hilux Axles

If the Hilux axle has a centered pumpkin you'll be able to point the pinion at the T-case in a verticle plane but not in a horizontal plane,
perhaps this is where the vibration is coming from.Tom Woods advertises a "multiple double cardan" (one on either end) driveshaft for
drivelines with compound angles.Try consulting a driveline expert to see what they think.Good luck.


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post #10 of (permalink) Old 10-25-2001, 05:36 PM Thread Starter
 
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Re: Double Cardan Vibration using Hilux Axles

The vibration is at all speeds.

LoneZuk

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