Just for future reference, here are two videos on setting the timing on the most common 4 wheel drive actuators. You do not have to pull the diff. The actuators are held on with three10mm bolts for the 3B4 and two 6mm allen screws and a T-45 security bit for the 5KM servos.
This one is for the 3b4/1HP servo found on 2008-Up models with Diff lock
This one is for the 5KM servo found on 2007 below models with Diff lock.