Author Topic: np203 shift problems 4x4 2x4?????  (Read 18330 times)

Offline 4x4orbust

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Re: np203 shift problems 4x4 2x4?????
« Reply #15 on: January 11, 2010, 02:44:10 PM »
you mean adjust the driveshaft?   i dont think there is any way to do that. 

how can you tell the chain is turning when you spin  the front drive shaft?
1982 chevy K-10 SWB, 355 th350/np208. 2.5"lift, 33" swampers, headers/duals,  current project

Offline sander

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Re: np203 shift problems 4x4 2x4?????
« Reply #16 on: January 12, 2010, 02:06:52 PM »
hey .i unbolted the rear off the case. then you can see the chain. when i turn the front drive shaft  you can see it rotate.  making sense?

Offline Captkaos

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Re: np203 shift problems 4x4 2x4?????
« Reply #17 on: January 12, 2010, 05:46:07 PM »
An NP203 works by a differential like a rear traction unit.  The front is always locked to a chain, so it will alway turn with the driveshaft.  If the diff unit in the T-case is bad, you just took off the part that makes the transfercase work.  You would have to have it in high lock (which locks the diff) and see if the front turns.

Offline sander

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Re: np203 shift problems 4x4 2x4?????
« Reply #18 on: January 13, 2010, 12:21:05 PM »
if i turn the front drive shaft i can see the chain turn. if i turn the rear drive shaft it does not. makes no differents wicth position the lever is.

Offline 4x4orbust

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Re: np203 shift problems 4x4 2x4?????
« Reply #19 on: January 13, 2010, 02:51:53 PM »
An NP203 works by a differential like a rear traction unit.  The front is always locked to a chain, so it will alway turn with the driveshaft.  If the diff unit in the T-case is bad, you just took off the part that makes the transfercase work.  You would have to have it in high lock (which locks the diff) and see if the front turns.
1982 chevy K-10 SWB, 355 th350/np208. 2.5"lift, 33" swampers, headers/duals,  current project

Offline sander

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Re: np203 shift problems 4x4 2x4?????
« Reply #20 on: January 14, 2010, 03:21:38 PM »
 i am trying too find out what the part is that is missing.  i bought the car whit this conversion  so i do not know what they did with it

Offline Captkaos

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Re: np203 shift problems 4x4 2x4?????
« Reply #21 on: January 14, 2010, 03:31:02 PM »
This should help identify what should be in it.

http://www.offroaders.com/tech/Diagrams/np203.htm