Advance Adapters 50-7906B - Manual (Page 7)

ADVANCE ADAPTERS INC.
P/N: 50-7905, 50-7906 & 50-7906B
P.O. Box 247, 4320 Aerotech Center Way New Item: (12/98)
Paso Robles, CA 93447 PAGE 7 OF 12
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 07-31-07
SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the
components will void any possible warranty or return privileges. If you do not fully understand modifications or changes that will be required to complete your conversion,
we strongly recommend that you contact our sales department for more information. This instruction sheet is only to be used for the assembly of Advance Adapter
components. We recommend that a service manual pertaining to your vehicle be obtained for specific torque values, wiring diagrams and other related equipment.
These manuals are normally available at automotive dealerships and parts stores.
NP231 SHORT SHAFT "FIXED YOKE" KIT
New Process 231 transfer cases have used two types or styles of output shafts. The current style New Process output
shaft started to be used in 1997 and is still being used. This newer style shaft eliminated the caged needle bearings in the
drive sprocket.
We have designed our Heavy Duty fixed yoke output shaft kit with the most current design shaft found in the New Process
231 transfer case. Our shaft looks like the shaft below left - listed as "TJ" style. Jeeps having the earlier style output
shaft, listed as "YJ" style, can use this kit by simply removing the caged needle bearing from the stock drive sprocket.
TJ style shaft q
Current NP231 shaft design
and our kit design. No needle
bearings required.
p
YJ style shaft
Early style NP231 shaft design.
The caged needle bearing from the
drive sprocket must be removed for
proper installation on our output
shaft.