Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd). ITEM NO. INTERVAL ITEM TO CHECK/ SERVICE PROCEDURE NOT FULLY MISSION CAPABLE IF: 2-26 TM 9-2320-386-10 13 During Suspen- Check for excessive bouncing and Operation sion swaying. (Contd) 14 Power assist steering a. Check steering for smooth a. Steering wheel response to turning. If steering wheel jerks in the opposite suddenly jerks in the opposite direction direction turned. turned, stop vehicle immediately and notify your supervisor. b. Check for unusual free play, b. Steering action is wandering, binding, or shimmy. loose or binds, or steering is inopertive (unless inoperative power assist causes binding). 15 Central tire inflation system a. Turn ECU switch (1) on and check display on ECU (2). Ensure tires deflate and inflate to the correct tire pressure for the terrain condition selected. WARNING The sudden jerking of the steer- ing wheel in the opposite direc- tion turned indicates air lines at the power assist cylinder have been crossed. Stop vehicle imme- diately and notify your supervi- sor. Failure to do this may result in injury to personnel. NOTE • Check CTIS with engine oper- ating at 1300 RPM. • If CTIS is inoperative, the unit may be turned off and tires manually inflated or deflated to desired pressure. If pres- sure other than highway set- ting is selected, operator must observe speed/pressure limita- tions displayed in the cab. NOTE • Steering will seem as if it is binding if power assist is inoperative. • If binding is caused by inop- erative power assist, vehicle is still mission capable.