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Username Post: Need info/diagams for NP203 transfer case        (Topic#219005)
Truemagnum15 
Forum Newbie
Posts: 48

Age: 54
Loc: Washington State
Reg: 11-22-08
06-11-09 07:42 PM - Post#1715499    

After removing his tranny (transfer case included) my husband somehow caused a load of roller bearings to fall out of the transfer case. He is now in the process of diassembling the transfer case to find where they go. He is down to the main part where the gears, etc. are housed for the linkeage. He is unclear as to how he gets into this section. Any helpers?
Thanks.
Mag

 
LMC Truck
gchemist 
Senior Chevytalk Moderator
Posts: 22040
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-12-09 05:05 AM - Post#1715632    
    In response to Truemagnum15

Mag,
Send me a private message with your e- mail address. Or you can e-mail me. I have factory scanned info on the NP205 and NP208 cases.

Wow you found a word not banned. I'll have to check into it.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
Vaughn 
"13th Year" Gold Supporting Member
Posts: 15695

Loc: Colorado Springs, CO
Reg: 08-08-04
06-12-09 11:48 AM - Post#1715889    
    In response to gchemist

An NP203 article:
http://www.4wheeloffroad.com/howto/47538/index.htm...

If it doesn't answer most of his questions I might be able to find another link.

In case you need parts, these guys are pretty good:
http://www.drivetrain.com/parts_catalog/transfe r_c...

 
gchemist 
Senior Chevytalk Moderator
Posts: 22040
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-12-09 12:58 PM - Post#1715927    
    In response to Vaughn

Mag,
I sent you the NP205 transfer case files.

If anyone need a breakdown of a NP205 or NP208. Drop me a note. I'll send you the scanned files in a document.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
Truemagnum15 
Forum Newbie
Posts: 48

Age: 54
Loc: Washington State
Reg: 11-22-08
06-18-09 09:46 PM - Post#1719689    
    In response to Vaughn

My hubby found a home for the small roller bearings. He now has fourteen larger roller bearings and he has NO idea where they go.
The truck is a 1977 Chevy Cheyenne 4-wheel drive 3/4 ton. It has the 203 transfer case, but someone has modified it with a conversion kit and locking hubs. As far as I can decipher, the kit is a heavy duty style as the spider gears have been completely removed instead of just locking them together. The only dilemma we face now is to figure out just where the 14 bearings go. The diagrams of a standard 203 does not help at this point as we are now into the area of the unit that has been converted. It would probably help if I uploaded a pic of the transfer case, huh.(DUH!)D'ya Think?

By the way, FYI: Anyone in need of a manual to rebuild the NP205 can download one for $15.95 @ 4x4tech.net. The only one available at this time is for the 205, but it is a decent one and supplies ample amount of illustrations with each step.

 
75gmck25 
Contributor
Posts: 345

Loc: Alexandria, VA
Reg: 12-25-07
06-19-09 02:18 PM - Post#1720017    
    In response to Truemagnum15

Is the info in this article helpful? I don't think it mentions a 2nd set of bearings.

http://www.coloradok5.com/milemarkerpt.shtml

Bruce

 
Truemagnum15 
Forum Newbie
Posts: 48

Age: 54
Loc: Washington State
Reg: 11-22-08
06-19-09 03:26 PM - Post#1720043    
    In response to 75gmck25

We were mistaken on the NP 205. It is actually a 203 that has been modified with a kit to make it part-time 4-wheel drive. Spider gears have been removed and the whole nine yards. Does anyone know if the kits have any roller bearings in them? If so, WHERE do they go? We were musing on the possibility that whoever rebuilt the transfer case last might have "forgotten" to remove these 14 bearings, leaving them to just rattle around inside the case till now.
The only hurdle that is left in the road is to figure out if those bearings have a home or not. My husband says that he can find NO place where they may belong. These bearings originally "fell out" when he first removed the transfer case from the truck. No telling how many persons have worked on the truck as my hubby is the fourth owner of a 1977.
What I really need to figure out is just how many differnt variations/brands of kits have been available for the np203 in order to narrow it down so we can try to find a diagram of the PROPER kit(s)

 
LMC Truck
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