1398 a c new process model 231, 233, 241, 243 chevrolet 88-on gmc 88-on dodge 87-on jeep 87-on revision 09/2018 We offer many parts and rebuild kits for your NP 231 such as transfer case savers, chains, range fork, steel plates and much more. Ring and Pinion Installation Instructions: Transfer Case Maintenance: Transfer Case and Motor Identification: About Us: Transfer Case Saver don't leave home These New Process cases have a circular tag on the rear of the case, near the center close to where the rear drive shaft exits. Identification information for the NP231 transfer case is on this tag typically includes model number, assembly number, and serial number and ratio data. Trying to change the transfer case output seal but can not - Answered by a verified Jeep Mechanic. to remove the transfer case output shaft damper. Use a suitable pry tool, or a slide hammer mounted screw, to remove the seal from the rear retainer (Fig. 89). Find a Liberty Np231 Transfer Case to restore or fix your Jeep. Free Shipping & Lowest Prices Guaranteed! Over 40 Years of experience at 4WD.com It is a simple process. Locate the transfer case plug. Remove the drain plug as well as the fill plug and drain the fluid into a pan. Replace the Parts and Accessories with New Process 231J Transfer Case Model and get Free Shipping on Orders Over $99 at Summit Racing! Please refer to the core return instructions included with the part or contact customer service for more details. Transfer Case, New Process 231J, 21-Spline Input Buy Jeep 231 J Heavy Duty Slip Yoke Eliminator Kit / SYE Kit: Transfer Case Components a stubby 9/16 ratcheting wrench and Stanley Proto J250G Proto 9-Inch Lock Ring Horseshoe Washer Pliers for ease of removal and install. Read more. 5 people found this helpful. Helpful. 231-J Low231 4:1 Heavy Duty Transfer Case Installation of the Low231 4:1 Heavy Duty Transfer Case requires that the transfer case be removed from the vehicle. After removal from the vehic