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Gas\Diesel Engine & Transmission:

4x4 with out the 4.. front not turning



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Old 11-07-2008, 11:49 AM   #1
 
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4x4 with out the 4.. front not turning

So i was messing around this past weekend trying to drag a storage shed and i buried my rear wheels.. i have a 78 K5 with a 305 engine, 350 trans, and 203 transfer case. A week before that i took everything out of the hubs and cleaned and repacked with grease. i'm not sure if its the Tcase or the hubs or the front diff... any ideas?

Last edited by Kvfd4266; 11-11-2008 at 08:41 AM..
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Old 11-07-2008, 12:31 PM   #2
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hooked to the front pulling backward? IIRC the 203 has a diff and will do the same as an open axle diff, but front to back instead of left to right. If you pull from the rear, it would probably spin the front.
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Old 11-07-2008, 12:35 PM   #3
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See if you front drive shaft and or axle shafts are turning. If is is then it's your hubs. If not T-case!
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Old 11-07-2008, 12:48 PM   #4
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Did you have the case in the LOC position?
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Old 11-07-2008, 01:55 PM   #5
 
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hooked to the front pulling backward? IIRC the 203 has a diff and will do the same as an open axle diff, but front to back instead of left to right. If you pull from the rear, it would probably spin the front.
I was pulling from the hitch in the back... I've got the normal heavy end and thats what i was pulling from..
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Old 11-07-2008, 01:57 PM   #6
 
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Did you have the case in the LOC position?
i think so... theres a few things in the shifter that are loose so i'm gonna straighten everything up and tighten it this weekend... it doesn't feel like it locks though... theres a decent amount of play...
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Old 11-07-2008, 07:03 PM   #7
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Take the shifter off and clean it up and grease and oil it. Mine didn't shift right but after cleaning it and oiling it, it works great, it may also need adjusting, I'll see if I can find a post on adjusting the 203 shifter.
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Old 11-07-2008, 07:06 PM   #8
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Heres how to adjust the shifter, mine was way off, but works perfect after cleaning and adjusting.

http://www.chuckschevytruckpages.com...iftdiagram.jpg
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Old 11-09-2008, 07:31 AM   #9
 
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Originally Posted by michael0584 View Post
Heres how to adjust the shifter, mine was way off, but works perfect after cleaning and adjusting.

http://www.chuckschevytruckpages.com...iftdiagram.jpg
i am unable to view the picture...
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Old 11-09-2008, 12:22 PM   #10
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if the tcase wasn't in lock, seems like it would have spun the front since it would have squat the rear. sure you weren't just looking at the ds tire while the ps tire was happily spinning away. what kind of hubs in the front end? was the driveshaft turning? axleshafts spinning? start at the tcase and work your way down to the tire and find out where it quits spinning.
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Old 11-09-2008, 05:00 PM   #11
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http://www.chuckschevytruckpages.com/drivetrains.html

Click on the 203 shifter link on that page
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Old 11-10-2008, 07:41 AM   #12
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Quote:
Originally Posted by Kvfd4266 View Post
A week before that i took everything out of the hubs and cleaned and repacked with grease.
Are you talking about locking hubs? Locking hubs should not be "packed" with grease. I've seen people fill the area behind the locking hub with grease, which then prevents the lock ring from sliding into place when the hubs are set to the "lock" position. There should only be a light coating of grease on the splines. Any chance you greased the hubs too well?
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Old 11-10-2008, 08:44 AM   #13
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If its a stock 203 and never had a part time kit, then it shouldn't have locking hubs in the front, should just be a smooth chrome cover, inside is a solid slug that locks it all the time.
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Old 11-10-2008, 10:14 AM   #14
 
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Originally Posted by HarryH3 View Post
Are you talking about locking hubs? Locking hubs should not be "packed" with grease. I've seen people fill the area behind the locking hub with grease, which then prevents the lock ring from sliding into place when the hubs are set to the "lock" position. There should only be a light coating of grease on the splines. Any chance you greased the hubs too well?
hmmm... that might be possible... not sure...
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Old 11-10-2008, 10:15 AM   #15
 
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Originally Posted by michael0584 View Post
If its a stock 203 and never had a part time kit, then it shouldn't have locking hubs in the front, should just be a smooth chrome cover, inside is a solid slug that locks it all the time.
correct... the only thing i have is dust covers...
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Old 11-11-2008, 09:34 PM   #16
 
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Originally Posted by michael0584 View Post
http://www.chuckschevytruckpages.com/drivetrains.html

Click on the 203 shifter link on that page
thank you thank you.... i'm going to attempt that this weekend...
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Old 11-12-2008, 08:24 PM   #17
 
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so to my suprise, when i got home this evening, my buddy tells me to take a look at my truck... i almost immediately notice a nice shiny thing in the middle of my front rims... upon further inspection i find two nice looking warn locking hubs... so hopefully that should eliminate the hubs from this problem... this weekend will probably be spent working on the transfer case and checking my gearing... but its nice to know that i don't have to worry about the hubs... does anyone know if the hubs not being locked will cause undue stress on the front drivetrain? I'll go find a NP205 if theres a good possibility that i'm gonna tear something up... more on the tcase this weekend... and more pics of the ugliness...


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Old 11-13-2008, 03:14 PM   #18
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If you keep the 203 you will have to keep the hubs locked, if you run the hubs unlocked and the case in hi or low loc position, it will eventually tear up the case. If you put the case in just hi or low with the hubs unlocked, you will not move anywhere because of the differential in the 203. You can put in a part time kit and buy yourself some time with the 203, but in the long run you might want to swap it out. You might could find a 208 cheaper and easier and depending on what you are going to do with your blazer, it may be fine.
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Old 11-13-2008, 03:48 PM   #19
 
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Originally Posted by michael0584 View Post
If you keep the 203 you will have to keep the hubs locked, if you run the hubs unlocked and the case in hi or low loc position, it will eventually tear up the case. If you put the case in just hi or low with the hubs unlocked, you will not move anywhere because of the differential in the 203. You can put in a part time kit and buy yourself some time with the 203, but in the long run you might want to swap it out. You might could find a 208 cheaper and easier and depending on what you are going to do with your blazer, it may be fine.
so lock the hubs for not and i'm going to be looking for a 205 or 208... thanks man...
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