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post #1 of (permalink) Old 08-26-2000, 01:08 PM
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C.V. Driveshaft Alignment?

I just replaced all the u-joints in my C.V. driveshaft...while re-installing my slip yoke I got to wondering...(NO BEER! at the Time) Do I align up the outer u-joints (Example A) or align up the inner u-joints (Example B) (had Beer when I took it apart..maybe thats whats wrong now)...Ok the Poll's Are Open...Vote now!
EXAMPLE A


77 CJ-7,SOA ,33" TSL's, 304 V8, T176,D300,D30,M20,
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post #2 of (permalink) Old 08-26-2000, 03:10 PM
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Re: C.V. Driveshaft Alignment?

Well, I'm sober and have no idea what you are talking about.
Will give you the answers depending on which driveshaft you have. Isn't clear from your post.

U-joint on each end:
The axle pinion shaft and the tail shaft out of the transfer case need to be parallel - NOT one pointing at the other. This will produce an equal angle at each end of the drive shaft.

U-joint on one end and CV joint on the other:
The angle at the u-joint end - the end on the axle - can be as much as 4 degrees - NO MORE, and that angle should be so that if you add weight to the vehicle that angle DECREASES. All the rest of the angle is at the CV-joint end.

Is this what you were trying to determine?

Doug '97 TJ
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post #3 of (permalink) Old 08-26-2000, 04:37 PM
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Re: C.V. Driveshaft Alignment?

I never can seem to explain this, so how about a picture? [img]/wwwthreads_images/icons/wink.gif[/img]

It is from a Toyota, but that should not matter - same principle [img]/wwwthreads_images/icons/smile.gif[/img]



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post #4 of (permalink) Old 08-26-2000, 06:12 PM
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Re: C.V. Driveshaft Alignment?

Sorry, I misread the question all together. DRM, seeing the pic made me realize that. [img]/wwwthreads_images/icons/blush.gif[/img]

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post #5 of (permalink) Old 08-27-2000, 10:08 AM
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Re: C.V. Driveshaft Alignment?

Ok then Here's pic of [/b]Example A.

The yoke ears & u-joint caps are lined up on the tail end part of the driveshaft (from C.V. to rear) [img]/wwwthreads_images/icons/crazy.gif[/img][img]/wwwthreads_images/icons/wink.gif[/img][img]/wwwthreads_images/icons/cool.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img]

77 CJ-7,SOA ,33" TSL's, 304 V8, T176,D300,D30,M20,
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post #6 of (permalink) Old 08-27-2000, 10:11 AM
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Re: C.V. Driveshaft Alignment?

Ok then Here's pic of [/b]Example B

The yoke ears & u-joint caps are lined up on the very ends of the complete drive shaft. [img]/wwwthreads_images/icons/crazy.gif[/img][img]/wwwthreads_images/icons/wink.gif[/img][img]/wwwthreads_images/icons/cool.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img]

77 CJ-7,SOA ,33" TSL's, 304 V8, T176,D300,D30,M20,
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post #7 of (permalink) Old 08-27-2000, 11:32 AM
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Re: C.V. Driveshaft Alignment?

B is correct, and in phase. Like DRM's pic.

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post #8 of (permalink) Old 08-27-2000, 11:32 AM
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Re: C.V. Driveshaft Alignment?

It sure looks like this:



Matches this:



So I say go with option A [img]/wwwthreads_images/icons/smile.gif[/img]


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post #9 of (permalink) Old 08-27-2000, 11:36 AM
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Re: C.V. Driveshaft Alignment?

Actually - look again: Option A is correct [img]/wwwthreads_images/icons/smile.gif[/img]

I know the flanged end pieces of the Toy shaft throw thing off visually, but the yokes on the main shaft part should be the same, not offset 90 degrees...


Option A



Matches this:



[img]/wwwthreads_images/icons/smile.gif[/img]


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post #10 of (permalink) Old 08-27-2000, 11:48 AM
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Re: C.V. Driveshaft Alignment?

You may be correct, can I change my answer?

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