Things that make you go @#$! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rcbildr · 11-20-2006, 12:24 PM

Like your transfer case (NP-208) getting stuck in 4wd twice 2 weeks!!!! The first time I didn't get home in time when the chain snapped and took out part of the case with it. Fortunately, the breakage happened right in front of my house so I didn't have far to drive. Now it has happened again and I'm not sure why. As far as I know there isn't any serious damage, but I haven't pulled apart the case yet. I'm hoping nothing broke, but I'm very confused about the whole situation. I adjusted the linkage according to the Haynes manual. The one drivability issue with my Burb was the tires were a little out of balance which was really noticeable around 65-70 mph. Could that be the main cause or is it just another case of bad luck? I'm seriously considering converting over to the Rockwell transfer case I have sitting in my shop or maybe try and find an NP-205. Guess I'll have to park the Burb for a little while longer.

Thanks....had to vent.

Critter · 11-20-2006, 03:17 PM

Switch to a NP205...Definetly won't snap a chain that way!

rcbildr · 11-20-2006, 09:44 PM

I've seriously thought about that, but right now I just don't have the time or $$$ to do the swap. I really want to get the Burb going again quickly so I will pull the transfer case, take it apart and see what's wrong. It's depressing because I just installed that transfer case a week ago....oh well I'll get it figured out.

On a more positive note. I was talking with my Boss and he is looking to get rid of his 1970 Chevy 4x4. Nothing is set in stone yet, but it looks like we might be working something out for it.

72 CustomCamper · 11-21-2006, 01:40 AM

Does it jump into 4x4 by its self? There is a spring loaded plunger that works on the shift rail to prevent that like an auto trans...

Chuck

rcbildr · 11-21-2006, 02:04 AM

The shift linkage didn't move. Both times I had it in 2wd hi. I pulled apart the original t-case and a gear had a few teeth missing and I figured the pieces jammed it in 4wd. I'm not sure what happened with this case, but I think it is something similar. I'll know more Friday when I take it all apart again...will try to post some pics of the carnage too.

rcbildr · 11-25-2006, 09:31 PM

Did some workin' on the t-case and it looks to me like the internals are ok. I found a diagram and the pieces that I thought were broken are not. I had to really look at the diagram, and it looks like those pieces/parts help with the shifting.

I'm guessing my old out of balance tires are the cause...somehow. I bought the current wheel & tires mostly for the wheels, but the tires had some life left so I figured I would drive on them for a while. So I will have my newer set of 33's put on and get the transfer case together and back in the vehicle. I've also ordered a set of Warn Premium hubs....waiting for those to arrive. Thanks!

ks147j111928 · 12-01-2006, 11:25 PM

...how about a Rockwell? Aren't they gear driven? I have a T-221 but don't plan on REALLY wheeling my ride. Just a stocker.

rcbildr · 12-02-2006, 02:18 AM

Because the T221 is gear driven, I've thought a long time about using the Rockwell set up I have in my shop. The only thing stopping me is the downtime and $$$. I would have to have my driveshafts modified and I can't really afford that now, and I need to work on onther projects.

I got my Burb back on the road. I got the back tires replaced and the manual hubs installed Thursday night. When I had the hubs out I noticed the axle nuts on both sides were extremely loose and had a fun time trying to get them torqued down. I'm wondering if the loose nuts may have been part of my problems. I still feel some vibrations, but I haven't replaced the front tires yet. I will have that done Monday. Thanks!

11-20-2006, 12:24 PM	#1
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Things that make you go @#$! Like your transfer case (NP-208) getting stuck in 4wd twice 2 weeks!!!! The first time I didn't get home in time when the chain snapped and took out part of the case with it. Fortunately, the breakage happened right in front of my house so I didn't have far to drive. Now it has happened again and I'm not sure why. As far as I know there isn't any serious damage, but I haven't pulled apart the case yet. I'm hoping nothing broke, but I'm very confused about the whole situation. I adjusted the linkage according to the Haynes manual. The one drivability issue with my Burb was the tires were a little out of balance which was really noticeable around 65-70 mph. Could that be the main cause or is it just another case of bad luck? I'm seriously considering converting over to the Rockwell transfer case I have sitting in my shop or maybe try and find an NP-205. Guess I'll have to park the Burb for a little while longer. Thanks....had to vent. __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28 Last edited by rcbildr; 11-20-2006 at 12:29 PM.

11-20-2006, 03:17 PM	#2
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: Things that make you go @#$! Switch to a NP205...Definetly won't snap a chain that way! __________________ 72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com

11-20-2006, 09:44 PM	#3
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Things that make you go @#$! I've seriously thought about that, but right now I just don't have the time or $$$ to do the swap. I really want to get the Burb going again quickly so I will pull the transfer case, take it apart and see what's wrong. It's depressing because I just installed that transfer case a week ago....oh well I'll get it figured out. On a more positive note. I was talking with my Boss and he is looking to get rid of his 1970 Chevy 4x4. Nothing is set in stone yet, but it looks like we might be working something out for it. __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28

11-21-2006, 01:40 AM	#4
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: Things that make you go @#$! Does it jump into 4x4 by its self? There is a spring loaded plunger that works on the shift rail to prevent that like an auto trans... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

11-21-2006, 02:04 AM	#5
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Things that make you go @#$! The shift linkage didn't move. Both times I had it in 2wd hi. I pulled apart the original t-case and a gear had a few teeth missing and I figured the pieces jammed it in 4wd. I'm not sure what happened with this case, but I think it is something similar. I'll know more Friday when I take it all apart again...will try to post some pics of the carnage too. __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28

11-25-2006, 09:31 PM	#6
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Update Did some workin' on the t-case and it looks to me like the internals are ok. I found a diagram and the pieces that I thought were broken are not. I had to really look at the diagram, and it looks like those pieces/parts help with the shifting. I'm guessing my old out of balance tires are the cause...somehow. I bought the current wheel & tires mostly for the wheels, but the tires had some life left so I figured I would drive on them for a while. So I will have my newer set of 33's put on and get the transfer case together and back in the vehicle. I've also ordered a set of Warn Premium hubs....waiting for those to arrive. Thanks! __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28

12-01-2006, 11:25 PM	#7
ks147j111928 ASE Certified Spoon Operator Join Date: Oct 2006 Location: Colorado Springs, CO Posts: 157	Re: Things that make you go @#$! ...how about a Rockwell? Aren't they gear driven? I have a T-221 but don't plan on REALLY wheeling my ride. Just a stocker. __________________ My six is bigger than your eight 67 K20 292 +.060" SM465 NP203 3.73s 86 4Runner, the daily on 31s 85 4Runner, the wheeler on 38s 92 x-cab truggy project for 2017... tons and 42s and V8 power

12-02-2006, 02:18 AM	#8
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Things that make you go @#$! Because the T221 is gear driven, I've thought a long time about using the Rockwell set up I have in my shop. The only thing stopping me is the downtime and $$$. I would have to have my driveshafts modified and I can't really afford that now, and I need to work on onther projects. I got my Burb back on the road. I got the back tires replaced and the manual hubs installed Thursday night. When I had the hubs out I noticed the axle nuts on both sides were extremely loose and had a fun time trying to get them torqued down. I'm wondering if the loose nuts may have been part of my problems. I still feel some vibrations, but I haven't replaced the front tires yet. I will have that done Monday. Thanks! __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28



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