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Installing rear driveshaft

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Old Apr 22, 2009 | 10:57 AM
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Installing rear driveshaft

Quick question about installing the rear 2 piece driveshafts. 2004 SD250 CC4x4 - the rear shaft thew a weight and has been out of balance since(even after getting re-balanced). Got a complete new 2 piece shaft including carrier. Does the new shaft have any type of alignment to it or can I unbolt the old one and put the new one in? - complete shaft from tanny to rear including carrier.
 
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Old Apr 22, 2009 | 11:07 AM
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The driveshaft must be "phased"

The yoke must be connected to the slip shaft so the "ears" line up w/ the other end.

One shaft will have two ears parallel,the second shaft will be 90* off.

( pretend the yoke is attached permanently to the slip shaft)

(easier to do than me explain)

Take a good look at the old one , maybe that will help my explanation.
 
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Old Apr 22, 2009 | 11:19 AM
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I think I understand what you are saying. The drive shaft is already together with the slip yoke and carrier(thank you Ford). I'll look at how the one is set up now.
 
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Old Apr 22, 2009 | 11:43 AM
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If the old driveshaft is not properly timed, try putting it in time before replacing it with the new unit. An out-of-time driveline can cause a vibration like you report.
 
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Old Apr 22, 2009 | 05:17 PM
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The splines in the center of the driveshaft have a pin that allow it to only be installed in one direction. Otherwise, it should be a simple install.
 
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Old Apr 22, 2009 | 06:55 PM
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Not to hijack this thread, but aloong the same lines...

When I orignally got my 6" lift on my truck a couple months ago, the ******** forgot to put a carrier drop bracket on my driveshaft and it was clunking around pretty good for a few days befoore they realized it and called me to fix it.

Ever since then I feel like I did damage to either my driveshaft or transmission because when there is either a heavy load in the bed or I am pulling a trailer a lot of time it will clunk and stutter and actually just die.

Any thoughts if I did damage to the driveshaft originally for those couple of days without a carrier drop bracket or what could cause this? Need to tow my heavy trailer in a couple weeks and I want to resolve this.

THANKS and SORRY for hijacking!
: )
 
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