Time Lag Test

If the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the forward clutch, direct clutch and first and reverse brake.

CAUTION:
a. Perform the test at normal operating fluid temperature (50 - 80 °C or 122 - 176 °F).
b. Be sure to allow a one minute interval between tests.
c. Make three measurements and take the average value.

MEASURE TIME LAG
a. Chock the four wheels.
b. Fully apply the parking brake.
c. Start the engine and check the idle speed.

Idling speed: 750 rpm

d. Shift the shift lever from N to D range. Using a stop watch, measure the time it takes from shifting the lever until the shock is felt.

Time lag: Less than 1.2 seconds

e. In same manner, measure the time lag for N to R range.

Time lag: Less than 1.5 seconds

EVALUATION
a. If N-D time lag is longer than specified:
- Line pressure too low.
- Forward clutch worn.
- No.2 and U/D one-way clutch not operating properly. (A240L, A241H)

b. If N-R time lag is longer than specified:
- Line pressure too low.
- Direct clutch worn.
- First and reverse brake worn.
- U/D brake worn. (A240L, A241H)