Time Lag Test
Time Lag TestINSPECTION
NOTE: When the select lever is shifted while the engine is idling, there will be a certain time elapse or lag before the shock can be felt. Using this, check the condition of forward brake, reverse brake, 1st one way clutch, forward one-way clutch and 3rd one way clutch.
^ Perform the test at normal operation fluid temperature 70-80°C (158-176°F).
^Be sure to allow a one minute interval between tests.
^ Make three measurements and take the average value.
1. Fully apply the parking brake.
2. Start the engine. Check the idling speed (A/C OFF).
3. Shift the select lever from N to D range. Using a stop watch, measure the time-lag which takes from shifting the lever until the shock is felt.
Time-lag
Standard: 1.2 sec. or less
If N <--> D time-lag is longer than specified:
^ Line pressure too low
^ Forward brake worn
^ One-way clutch not operating properly
4. In the same manner, measure the time lag for N <--> R.
Time-lag
Standard: 1.5 sec. or less
If N <--> R time lag is longer than specified:
^ Line pressure too low
^ Reverse brake worn