Jeep JK Wrangler NV241 Transfer Case Service Click on the link below to see a detailed write-up on how to service it: If you haven’t done so already, I would highly recommend that you now move over to your NV241 Transfer Case and service it as well. Once the fluid starts to ooze back out, quickly reinstall the fill bolt onto the side of your NSG 370 manual transmission using an H14 bit, clean up your mess and you’re done. It should take just a tad over 2 quarts of fluid to fill and you’ll know when it’s full when fluid starts to ooze back out the fill hole.Ĩ. Attach a bottle pump to your Mopar transmission fluid bottle, insert the feeder tube into the side of your NSG 370 manual transmission and then begin pumping the fluid into it. Using your cut down H17 allen bit or modified coupling nut and 17mm or 11/16" wrench, reinstall the drain bolt onto your NSG 370 manual transmission.ħ. This is a shot of what your NSG 370 manual transmission drain plug should look like once it is clean.Ħ. This is normal and will need to be cleaned off before it can be reinstalled.ĥ. The drain bolt on your NSG 370 manual transmission has a tip that is magnetized and as you can see in this pic, it should be covered with small metal filings that stand up like hair. Hold an oil catch pan up close to the exhaust crossover on your Jeep JK Wrangler and then remove the drain bolt completely.Ĥ. Then, using a 17mm or 11/16" wrench, proceed to loosen the bolt until it can be turned by hand.ģ. Maneuver your cut down H17 allen bit or modified coupling nut up between your Jeep JK Wrangler’s exhaust crossover and up into the drain bolt on your NSG 370 manual transmission. Place an oil catch pan underneath your NSG 370 manual transmission and then, using an H14 allen bit, remove the fill bolt which is located on the passenger side as shown.Ģ. Park your Jeep JK Wrangler on level ground. Servicing Your NSG-370 Manual Transmissionġ. NOTE: You can also create a drain plug removal tool by cutting the end off of a 17mm allen wrench or H17 bit. This is a shot of what your new NSG 370 manual transmission drain tool should look like when all is said and done. You will also need to grind all 6 sides of the coupling nut just a bit to reduce it’s over all dimension so that that it’s closer to being 17mm.ģ. ![]() Place the coupling nut into a bench vice and use a die grinder to grind off the excess length. This will make the coupling nut short enough to fit between the exhaust crossover and transmission on your Jeep JK Wrangler.Ģ. If you are making your drain plug removal tool out of a 1/2" coupling nut (outside width = 5/8"), you will need to trim about a 1/4" off the end of it so that it’ll measure about 1-1/2" in length. For my purposes, I decided to make my own 17mm removal tool and the instructions below will show you what I did.ġ. I don’t know what Chrysler was thinking when then designed the JK but due to the fact that they routed the exhaust crossover directly underneath the drain bolt on the NSG 370 manual transmission, removing it is somewhat of a challenge especially if you don’t have the right tool to do it. (3) Quarts – Mopar MS-9224 Manual Transmission Fluid
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