TM 9-2320-364-102-176 2-17. OPERATING TRANSMISSION AND TRANSFER CASE.a.Start engine (Para 2-15).b.Ensure the PARKING BRAKE control (1) is pushed in.c.Ensure the transmission range selector (2) is set to Neutral (N).·Do not force TRANSFER CASE shift lever. Lever maybe difficult to shift if there is drive line windup. Using excessive force on shift lever may cause damage to shift linkage or change linkage adjustment.·Do not move TRANSFER CASE shift lever when truck is moving, or when transmission is in gear. Severe damage to drive line may result.