Removing TC Drop - Pirate4x4.Com : 4x4 and Off-Road Forum

Roscoe P. Coltrane · 10-18-2005, 04:12 PM

I'm looking to remove my TC drop since I now have a SYE. THe shop that installed the SYE would not remove the TC drop for some reason.

Anyways, as I am a Jeep newbie and I want to learn how to do things myself, could someone please let me know the procedure; I know I need a jack, but do I have to disco the driveshaft? Anyone know what size the stock bolts are so I can buy some? Any other tips or tricks I should know? Thanks in advance.

hotwheelsYJ · 10-18-2005, 04:31 PM

The bolts are 1/2-13 probably 1-1.25 long
Put a floor jack under the belly pan
Loosen all 6 bolts, remove one side(3 bolts)
lower jack enough to get out spacer
jack back up & put in shorter bolts

Repeat for other side
tighten all bolts and check angle & clearance of front & rear Dshafts

Shouldn't take any longer than 20 minutes

Jaffer · 10-18-2005, 07:00 PM

Did the TC drop hardware come with a lift kit?
Probably so ...
Why? Because you've changed your drive shaft angle and the drop is to prevent U-Joint vibrations and binding.
Solution ... a drive shaft witha CV style U-Joint on the TC side.
Added "issue" ... you will probably need to rotate your rear end pinion angle to point to (just under) the new CV yoke where-as a conventional U-Joint setup needs the yokes to point parallel with each other.
Check out the tech sections of some of the major driveshaft manufacturers. They usually have show-and-tell discriptions and diagrams on proper drive shaft geometry.

JohnnyJ · 10-18-2005, 07:21 PM

If the spacers are plastic then it should be a quick job.

If they are aluminum, you might be in for a fight if the spacers have corroded onto the bolts. I've had this happen, and it's no fun. One broke free with liberal amounts of heat, the other was removed with a sawzall.

I've seen some get lucky with lack of vibes and no pinion adjustments, but others have required adjustable control arms to cure.

10-18-2005, 04:12 PM	#1 (permalink)
Roscoe P. Coltrane Registered User Join Date: Aug 2005 Member # 51586 Posts: 13	Removing TC Drop I'm looking to remove my TC drop since I now have a SYE. THe shop that installed the SYE would not remove the TC drop for some reason. Anyways, as I am a Jeep newbie and I want to learn how to do things myself, could someone please let me know the procedure; I know I need a jack, but do I have to disco the driveshaft? Anyone know what size the stock bolts are so I can buy some? Any other tips or tricks I should know? Thanks in advance.

10-18-2005, 04:31 PM	#2 (permalink)
hotwheelsYJ Rock God Join Date: Jun 2004 Member # 32401 Location: Cleveland TN Posts: 1,077	The bolts are 1/2-13 probably 1-1.25 long Put a floor jack under the belly pan Loosen all 6 bolts, remove one side(3 bolts) lower jack enough to get out spacer jack back up & put in shorter bolts Repeat for other side tighten all bolts and check angle & clearance of front & rear Dshafts Shouldn't take any longer than 20 minutes __________________ www.WILSONPERFORMANCE.com

10-18-2005, 07:00 PM	#3 (permalink)
Jaffer Registered User Join Date: Jan 2001 Member # 2769 Location: Farmington NM Posts: 1,877	Did the TC drop hardware come with a lift kit? Probably so ... Why? Because you've changed your drive shaft angle and the drop is to prevent U-Joint vibrations and binding. Solution ... a drive shaft witha CV style U-Joint on the TC side. Added "issue" ... you will probably need to rotate your rear end pinion angle to point to (just under) the new CV yoke where-as a conventional U-Joint setup needs the yokes to point parallel with each other. Check out the tech sections of some of the major driveshaft manufacturers. They usually have show-and-tell discriptions and diagrams on proper drive shaft geometry. Last edited by Jaffer; 10-18-2005 at 07:05 PM.

10-18-2005, 07:21 PM	#4 (permalink)
JohnnyJ Low Range Drifter Join Date: Nov 2001 Member # 7903 Location: SE Michigan Posts: 2,732	If the spacers are plastic then it should be a quick job. If they are aluminum, you might be in for a fight if the spacers have corroded onto the bolts. I've had this happen, and it's no fun. One broke free with liberal amounts of heat, the other was removed with a sawzall. I've seen some get lucky with lack of vibes and no pinion adjustments, but others have required adjustable control arms to cure. __________________ DEAK Racing #715 TREC B / Ultra 4 Mod Class Rig Thanks to Drivetrain Specialists and PAC Racing Springs for your support

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