Dan the Gear Man Tech® Note 1:
The original input seals harden with age which can lead to leaks. Replacing the Transfer Case Input Seal is especially important on trucks with NV4500 and NV5600 transmission conversions because the double lip, double spring Transfer Case Input Seal also functions as the transmission output seal.

Dan the Gear Man Tech® Note 2:
Component Parts for TK2000C are:
TK10519 Round 6 Bolt Transmission to Transfer Case Adapter Gasket
TK10529 8 Bolt, Hourglass Transfer Case Adapter to Transfer Case Gasket
TK10517 Double-Lip, Double-Spring Input Seal.

Dan the Gear Man Tech® Note 3:
The New Process NP205 cast iron, gear drive transfer cases were designed to be used with cut paper gaskets of precise dimensions. For proper clearances, always use original equipment thickness gaskets when working on you transfer case.

Dan the Gear Man Tech® Note 4:
The gaskets do not need to be gooped up with sealant to make a leak-proof seal. If you wish to fill a gouge or use a sealant to hold a gasket in place during assembly, only apply a very thin film!

Dan the Gear Man Tech® Note 5:
Need Tech Help on rebuilding your NP205? Get my TM2000 New Process NP205 Transfer Case Service Manual. A Complete NP205 shop Manual with over 375 color photographs is your indispensable NP205 resource for Repair Procedures and Parts Identification. Complete coverage of Disassembly, Inspection, and Reassembly Procedures. Also, Shop Notes, Tool Recommendations, Complete Parts Guide, and full color Exploded Views, including Right Drop and Left Drop Models, plus GM Specific Parts. Covers New Process NP205 Transfer Cases found in Chevrolet, Dodge, Ford, GMC, and International Harvester (IHC) 4x vehicles from 1969-1993.
Or my TM2002 for the Exploded Views and Parts Guide only. Fully Illustrated with dozens of crisp color photographs for EASY Parts Identification! This Manual includes 10 page Parts Identification Guide with full color Exploded Views.