5, At that time, 2 When adjusting TtO.C.S., EXHAUST EMISSION CONTROL Throttle Opener Control System (T.O.C.S.) manifold vacuum pressure increase abruptly to 80.0 kFa (600 mmHg, 23.62 ian) or above and then decreases to the level set at idling. 3: Maximum negative pressure Operating prlssure |d|ing D'Issure 5: meiw c: Pressure Time 55502 Check that the TtO.C.S. operating pressure is within the specified pressure. Specified pressure [0 rn (0 ft), sea level and 101.3 kPa (760 mmHg, 29.92 ian), atmospheric pressure] : -73.3:0.7 kPa (55015 mmHg, -21.65:0.20 ian) If it is lower than me specified level, turn the adjusting screw or nut in the following direcA tion until correct adjustment is made. Adjusting nut: Clockwise If it is higher than the specified level, turn the adjusting screw or nut in the following direc- tion'until correct adjustment is made. Adjusting nut: Counterclock'wise turn adjusting nut in or out with lock spring in "place. Always sat lock spring properly to prevent"ohanges in set pressure. ' Inspection and Adjustment (Cont'd) sec The operating pressure varies in proportion altitude. is. When atmospheric pressure is known, opera pressure will be found by tracing the ar' ,wline_'_' When altitude}: known, opera pressure will be found by tracing me arrow ""B [L , ,Whenohecking ,_T.D.C.S. operating ipress note atmospheric pressure and alevatior which check is to be made, and deterrninr pressure by the information furnished. For examplefif. above sea level is 1,001 (3,280 ft), operating pressure will dlen 63.3 kPa (475 mmHg, 18.70 ian). In other words, T.O.C.S. operates at 63.3 (475 mmHg, 18.70 ian).