To check the delay value of ACPR, you need to put the lever in position N for 1 minute, then move it to position D or R, and measure the time that will pass before the click is heard. For the position D, the normal time is up to 1.2 seconds, and for R-up to 1.5 seconds. To get the correct result, it is better to perform this test three times and calculate the average delay time. If the delay exceeds the standard time, the following fault types are possible:
-Low line pressure;
-Wear muft;
-Violation of the work of the free travel coupler.