Toyota 4-Runner 1985 Repair Manual page 408

AT-6
AUTOMATIC TRANSMISSON - Test
TIME LAG TEST
If the shift lever is shifted while the engine is idling, there will be a certain time elapse or lag before
shock can be felt. This is used for checking the condition of the 00 clutch, front clutch, rear clutch
c. ..
..A
brake No.3.
MEASURE TIME LAG EVALUATION
(a) Fully apply the parking brake.
(b) Start the engine and check the idle speed.
Idle speed (A/C OFF)
22R Engine, 22R-E Engine:
"N"range 750 rpm
(c) Shift the shift lever from
liN" to "0" 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
(d) In same manner, measure the time lag for "N"
Time lag: Less than 1.5 seconds
CAUTION:
(a) Perform this test at normal operation 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.
I
2
:3
Av"
(a) If "N"
-+
"0" time lag is longer than specified:
• Line pressure too low
• Front clutch worn
• 00 one-way clutch not operating properly
(b) If "N"
-+
"R" t"ime lag is longer than specified:
• Line pressure too low
• Rear clutch worn
• Brake No.3 worn
• 00 one-way clutch not operating properly
Shock Noise
0 R
12 1.4
1.1 1.2
1.0 1.3
1.1 1.3
Shock Noise
TE0009