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Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
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Experience:  Have owned a repair shop for 25 yrs.
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How to adjust a 79 transfercase linkage

Resolved Question:

how to adjust a 79 transfercase linkage
Submitted: 5 years ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 5 years ago.


you say it is a c20,,,a c20 is 2wd..if it is a 4wd,it is a k20.....this is a 4wd,,right...and you want to know how to adjust the transfer case linkage,,correct?

Expert:  Tim's Auto Repair replied 5 years ago.


this should help you



GM Full-Size Trucks 1970-1979





New Process Model 203

See Figure 1

FIG : Fig. 1: New Process models 203 transfer case shift linkage adjustment


The 203 full time 4-wheel drive transfer case is the only one on which linkage adjustment is possible.

  1. Place the selector lever in the cab in the Neutral position.
  2. Detach the adjustable rod ends from the transfer case levers.
  3. Insert an 11 / 64 in. drill bit through the alignment holes in the shifter levers. This will lock the shifter in the neutral position with both levers vertical.
  4. Place the range shift lever (the outer lever) on the transfer case in the Neutral position.
  5. Place the lockout shift lever (the inner lever) on the transfer case in the unlocked position. Both levers should now be vertical.
  6. Adjust the rods so that the linkage fits together. The indicator plate can be moved to align with the correct symbol.
  7. Remove the drill bit.
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