np 203 transfercase
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Joined: Feb 2004
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From: RI
I'm not familiar with np203's, but if there isn't a drain plug, you could get one of those hand-pumps, stick the tube into the fill plug and try to get out as much fluid as possible. You can probably find a pump like that for like $5 at any auto-parts place.
Senior User
Joined: Sep 2005
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From: Saint Paul, MN
Use 30w to 50w depending on the temperature. Don't use 80w90 it's too thick for the chain. http://www.off-road.com/chevy/mm-np203/
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Joined: Nov 2005
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Originally Posted by tomcasino
Use 30w to 50w depending on the temperature. Don't use 80w90 it's too thick for the chain. http://www.off-road.com/chevy/mm-np203/
Last edited by The SnoMan; Dec 25, 2005 at 04:42 PM.
Post Fiend
Joined: Mar 2005
Posts: 8,542
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From: Louisiana
That site is wrong about using 10w40, but it is correct saying 80 or 90 weight is harmfull to run.
On the back of the t case there is a circular peice of alluminum, I removed the 3 lower bolts till draining slowed, and the removed the whole thing. Then as mentioned above it would be a good idea to get a hand pump to finish draining the rest out, then use some RTV silicone or somthing similar and install the alluminum plate back on the fill with 6 or 7 quarts of non detergant 30W.
On the back of the t case there is a circular peice of alluminum, I removed the 3 lower bolts till draining slowed, and the removed the whole thing. Then as mentioned above it would be a good idea to get a hand pump to finish draining the rest out, then use some RTV silicone or somthing similar and install the alluminum plate back on the fill with 6 or 7 quarts of non detergant 30W.
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