Time Lag Test
TIME LAG TESTIf the shift lever is shifted while the engine is idling, there will be a certain time elapse or lag before the shock can be felt. This is used for checking the condition of the OD clutch, front clutch, rear clutch and No. 3 brake.
NOTE:
(1) Perform the test at normal operation fluid temperature (50 - 80°C or 122 - 176°F).
(2) Be sure to allow a one minute interval between tests.
(3) Make three measurements and take the average value.
MEASURE LAG TIME
1) Fully apply the parking brake.
2) Shift the transfer shift lever to the "2H" position.
3) Start the engine.
Check idling speed (A/C OFF)
"N" range: 850 - 950 rpm
4) 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.
Lag time: Less than 1.2 seconds
5) In same manner, measure the time lag for "N"
Lag time: Less than 1.5 seconds
EVALUATION
1) If "N" --> "D" time lag is longer than specified:
^ Line pressure too low
^ Forward clutch worn
^ OD one-way clutch not operating properly
2) If "N" --> "R" time lag is longer than specified:
^ Line pressure too low
^ Direct clutch worn
^ No. 3 brake worn
^ OD one-way clutch not operating properly