TM 9-2320-361-20 1-18. CONTROL SYSTEMS OPERATION (Contd) g. Transfer Case Control System Operation. The transfer case control system converts four-wheel driving power into six-wheel driving power and provides source of power to operate auxiliary equipment through a power takeoff (PTO). Major components of transfer case control system are: TRANSFER CASE SHIFT LEVER - Is pulled up to HIGH for light load operations or pushed down to LOW for heavy load operations. TRANSFER CASE SHIFT LEVER LINK - Transmits movement of transfer case shift lever to shift shaft. TRANSFER CASE LOCKOUT ROD - Actuates and adjusts the movement of transfer case lockout. TRANSFER CASE PTO CONTROL LEVER LINK - Transmits movement of transfer case PTO control lever assembly to transfer case PTO lever. TRANSFER CASE PTO CONTROL LEVER ASSEMBLY - Manual control for engaging power takeoff. TRANSFER CASE LOCKOUT - Locks transfer case in NEUTRAL position to prevent vehicle movement when transfer case PTO is engaged. 1-45