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12-25-2014, 12:24 PM
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#1 |
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Registered User
Join Date: Sep 2013
Location: North Tonawanda, NY
Posts: 236
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Drive Shaft Removal
Looking to remove the drive shaft from my 1971 C20 auto transmission pickup so I can replace the hanging bearing at midpoint between the two shafts. Should I start at the differential by removing the u-bolts from the u-joint? Will the splined shaft pull out of the transmission once the diff. end is removed?
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12-25-2014, 01:02 PM
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#2 |
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Registered User
Join Date: Jul 2014
Location: Arlington, WA
Posts: 242
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Re: Drive Shaft Removal
Yes, remove ubolts at the rear end, unbolt the mid point bearing and it will slide out. Have a drip pan handy as fluid may run out the back of the trans
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12-25-2014, 01:06 PM
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#3 |
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Registered User
Join Date: May 2013
Location: Oregon
Posts: 330
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Re: Drive Shaft Removal
Unbolt it at the differential and the support bearing and it will slide out. It's a good idea to mark things so you can put it back together exactly the way it came out. This will reduce the chance of any new vibration or other balance problems.
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12-25-2014, 02:17 PM
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#4 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,728
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Re: Drive Shaft Removal
And now would be a good time to replace that pinion seal which has a pretty significant leak. And I would guess you'll find diff fluid level low so a fluid change also a good idea.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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12-25-2014, 02:17 PM
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#5 |
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72 GMC
Join Date: Feb 2008
Location: Wells, Maine
Posts: 535
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Re: Drive Shaft Removal
Remember, once you remove the driveshaft,
the truck is no longer in park !
__________________
KEL Members I have met : 2014.02.01: bruceman1968, Mr Handy, colgad, RenoKeene, CaptRMW |
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12-25-2014, 02:21 PM
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#6 |
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Registered User
Join Date: Sep 2013
Location: North Tonawanda, NY
Posts: 236
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Re: Drive Shaft Removal
Thanks guys! Sorry to bother everyone on Christmas.
Jeff |
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12-25-2014, 02:25 PM
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#7 |
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72 GMC
Join Date: Feb 2008
Location: Wells, Maine
Posts: 535
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Re: Drive Shaft Removal
No problem.
That is what this site is all about.
__________________
KEL Members I have met : 2014.02.01: bruceman1968, Mr Handy, colgad, RenoKeene, CaptRMW |
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12-25-2014, 05:17 PM
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#8 |
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Registered User
Join Date: Dec 2014
Location: Tucson, Az
Posts: 44
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Re: Drive Shaft Removal
I just did this carrier bearing and u-joints yesterday on my truck. The mount was shot. Not too bad of a task. The u-joints were a little of a pain. As for the bearing, just pop the center u-joint out and and remove the bolt. You shouldn't need any special tools to pull the bearing, just a little persuasion. Oh and I couldn't have done it without my little helper. Good luck.
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12-26-2014, 11:11 AM
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#9 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,971
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Re: Drive Shaft Removal
The 2 piece driveline is "phased" together. Meaning it is balanced at the factory as one piece. So if you do slide it apart, make sure you mark both shafts and then slide them back together the exact same way, aligning the marks you made. Or you will have vibration issues.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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11-16-2019, 03:30 AM
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#10 |
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Registered User
Join Date: Apr 2019
Location: Iowa
Posts: 16
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Re: Drive Shaft Removal
Anyone have helpful hints on how to remove the u joint I can't get the bolt out I have all 4 nuts off but the bolt is stuck in place solid I've used PB blaster and a rubber mallet even tried wedging a screwdriver but I can't seem to get it to budge on my 70 C20
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11-16-2019, 10:00 AM
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#11 |
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Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,238
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Re: Drive Shaft Removal
Pics would help us help you. Which bolt?
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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11-16-2019, 10:50 AM
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#12 |
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Registered User
Join Date: Apr 2019
Location: Iowa
Posts: 16
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Re: Drive Shaft Removal
In the first picture above it's got a U shaped bolt with 2 nuts on the backside I removed the nuts but the bolts won't come out and I've used all my strength trying to just pry the driveshaft off but I got nowhere
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11-16-2019, 10:57 AM
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#13 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Drive Shaft Removal
If this is the picture you are talking about it looks like someone welded it up.
Not a 100% sure though but it looks to be. You may have to grind it a part and then buy a new rear pinion yoke for it also. It want matter about the union cause you need to replace it anyway. You could even cut it off with a saw all's. 
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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11-16-2019, 11:01 AM
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#14 |
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Registered User
Join Date: Apr 2019
Location: Iowa
Posts: 16
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Re: Drive Shaft Removal
The one on my truck looks a lot better than that guys does I just didn't take a picture of mine and didn't see the reply until I got upstairs in my apartment mine just looks old but still clean
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11-16-2019, 11:08 AM
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#15 |
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Registered User
Join Date: Apr 2019
Location: Iowa
Posts: 16
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Re: Drive Shaft Removal
This is mine
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11-16-2019, 11:08 AM
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#16 |
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Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
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Re: Drive Shaft Removal
Heat
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