Dadinator Posted October 17, 2008 Share Posted October 17, 2008 The transfer case was making a lot of noise. I picked up a new (used) one cheap. It was a bit different. Both NP231 J's but; the new one has a different hook up for the speedo (electric vs. cable) and no provision for the 4 vacuum hose fitting that is on the comanche. So I figured that I would just swap out the parts I need. Once apart, I found out the the only problem with old one is that the chain is stretched out and banging against the inside of the case. So, I'm going to make a good transfer case out of the 2 of these. What kind of oil do you put in this thing when back together and how much of it? Also, when I get a good one, then I may try to fix the other and sell. Is there a master link on these things like there is on other chains? Can a link be removed? Or do I need to get a new chain? Can you get a chain or are they cost prohibitive? Thanks, Mike. Link to comment Share on other sites More sharing options...
BLHTAZ Posted October 17, 2008 Share Posted October 17, 2008 They use automatic transmission fluid and it iwll take a little less than 2 qts to fill it. If you get a fluid pump and fill it when it is in the truck all you have to do is just like a differential and pump the fluid in until it starts to run back out the fill hole then put the plug in. You can buy new chains for them. I don't know where you might get one in your area, but there is a tranny shop near me that sells them. Typically about $50 here. There us no link to remove though...you must remove the main shaft & the front output to change it, but it's not a tough job if you just pay attention to what you are doing and work slowly. Link to comment Share on other sites More sharing options...
Motion Offroad Posted October 17, 2008 Share Posted October 17, 2008 The NP231 was sold in several different configs. The renix era 231 was sold as a 21 spline input and had the stuff for the vac. disco axle. The 231 upto 1996 was sold as a 23 spline input and didn't have the vac. disco stuff. Than 1997 on it was 23 spline and even a different configuration. If your replacing the chain, now is a good time to upgrade it to the wider/stronger chevy 231 chain. JB Conversions sell a kit with everything needed, or you can source the parts yourself. It's part number is 2032 and it's kinda salty (around $325), but if you offroad your rig it's a great upgrade to make a very heavy duty NP231. Link to comment Share on other sites More sharing options...
Dadinator Posted October 17, 2008 Author Share Posted October 17, 2008 Thanks, Man. I'll be fixing it this weekend. Then the son can have his truck back. :D It's been in the driveway for 2 weeks on jack stands. Link to comment Share on other sites More sharing options...
jbhill Posted October 17, 2008 Share Posted October 17, 2008 i would run synthetic atf in it imo... Link to comment Share on other sites More sharing options...
Dadinator Posted October 17, 2008 Author Share Posted October 17, 2008 The NP231 was sold in several different configs. The renix era 231 was sold as a 21 spline input and had the stuff for the vac. disco axle. The 231 upto 1996 was sold as a 23 spline input and didn't have the vac. disco stuff. Than 1997 on it was 23 spline and even a different configuration. If your replacing the chain, now is a good time to upgrade it to the wider/stronger chevy 231 chain. JB Conversions sell a kit with everything needed, or you can source the parts yourself. It's part number is 2032 and it's kinda salty (around $325), but if you offroad your rig it's a great upgrade to make a very heavy duty NP231. Thanks for the heads up, but; I won't be making that upgrade. This truck doesn't get off roaded that much and when it does, it's just trails and just around the farm. Later. . . Link to comment Share on other sites More sharing options...
BLHTAZ Posted October 17, 2008 Share Posted October 17, 2008 i would run synthetic atf in it imo...X2I use AMSOIL :cheers: Link to comment Share on other sites More sharing options...
Dadinator Posted October 22, 2008 Author Share Posted October 22, 2008 Need more help, folks. Now that I have the transfer cases apart, I can't seem to get the good tight chain on. Do I have to completely disassemble this thing? I was hoping I could get by with just the covers, but; I get it on and it's cocked so when I straighten the housing to insert the main shaft, the chain pops off. If I try to put it on with the shaft already in, (Hard to get to), then I can't get it on. Help! Link to comment Share on other sites More sharing options...
Wildman Posted October 22, 2008 Share Posted October 22, 2008 I wanted to post This up for you the other day........but we were all 'out to lunch' this weekend ;) Hope there's some pointers in here for you. Link to comment Share on other sites More sharing options...
Dadinator Posted October 24, 2008 Author Share Posted October 24, 2008 Thanks for that. I'll give it a try this weekend. . . :D Link to comment Share on other sites More sharing options...
Dadinator Posted November 4, 2008 Author Share Posted November 4, 2008 Got it all back together and buttoned up. Now when the son get's back from college in a week or 2, we'll put the sucker back in the truck. Thanks for the input. . . Link to comment Share on other sites More sharing options...
Redramman Posted November 5, 2008 Share Posted November 5, 2008 I see I'm not the only one with College Son's truck on jack stands for 2 weeks. I wish they had Auto shop at school like I had. Link to comment Share on other sites More sharing options...
Redramman Posted November 5, 2008 Share Posted November 5, 2008 I see I'm not the only one with College Son's truck on jack stands for 2 weeks. I wish they had Auto shop at school like I had. Link to comment Share on other sites More sharing options...
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