Advance Adapters 477023 - Manual (Page 7)

(Step D-13)
(13) With the screw plugs removed, the shift ball and spring
assemblies can be removed from both sides.
(Step D-14)
(14) Drive the roll pin out that
retains the high/low shift
fork using a 3/16" (4mm)
punch. Occasionally the
pin will fall into the case.
Don't worry. You will be
able to retrieve the pin
later. On 1979-83 and
1985-88 fuel injected
model transfer cases,
DO NOT REMOVE
roll
pin.
(Step D-7)
(7) Pull case off. Remove the two lubrication tubes located on
either side of the main shaft.
Note their orientation!
(Step D-8)
(8) Using a 3/16" (4mm) punch, drive the roll pin out that holds
the front wheel drive shift fork.
(Step D-9)
(9) Slide the fork and clutch sleeve off the shift rail.
(Step D-10)
(10) Remove the front wheel drive gear and it's caged needle
roller bearing assembly.
(Step D-11)
(11) Remove the thick spacer found behind the front wheel drive
gear and be aware of the small ball bearing underneath it.
(Step D-12)
(12) Use a 12mm socket to remove the four bolts that retain the
shift fork cover. With a 5mm Allen wrench, remove the shift
detent screw plugs found on both sides of the case.