[Phil Waterman]

First I know that this topic has been discussed in the past (I can’t find the thread) but thought it would be worth bring up again.

Problem – C60 series Pattern 12 or 13 at times are very hard or impossible to shift out of four wheel drive they shift in easily and shift through neutral, 4 high, 4 low, and PTO without difficult (or with gentle rocking the truck). First assumption is the axles are just loaded; jack up one wheel should release that, problem still there. Yes, of course I adjusted all the linkages when I assembled the truck.

After puzzling on this for a while I realized that it had nothing to do with transfer case it purely is a problem in the shift tower lever end not traveling far enough to go through the gate to allow it to the full over (to the left) and back position of two wheel drive.

Solution- Disconnect linkage shaft #13 by removing the rear pin note, the alignment of the pin to the lever #14. Now see if the transfer shift lever will move to the full over and to the rear of the correct two wheel drive position. Now push the engagement rod #16 all the way in till you feel it engage the ball and spring detent. Examine to see if the pin and linkage will easily line up now, if not readjust the clevis until it is a nice smooth fit.

Why did it change from original set up to now, I suspect a couple of things, one the cross shaft for this linkage is bolted to the transmission so any slop in mounting holes and bolts will allow the unit to shift, another suspect is as the engine and transmission are bolted to the frame with only 4 bolts where any shift forward or aft will affect the clutch adjustment and the two or four wheel drive linkage adjustment.

I note this shifting problem recently when I started using my `41 C60L Pat 12 to haul wood out of the woods over rough ground. At first figured is was the drive train loading, but once I readjusted the transfer linkage it now shifts easily in out of 4x4 hi or low and back to 2x4 drive.

Moral of the story - Just because you adjusted it once by the book doesn’t mean it is right.