Toyota Celica Supra 1986 Service And Repair Manual page 298

AUTOMATIC TRANSMISSION - Time Lag Test
AT-23
TIME LAG TEST
I the shi ft lever i s shifted while the engi ne is idling. there w ill be a certain t ime elapse or lag before the
!hock can be felt . This i s u sed for checki ng the condi tion of the 00 clutch, front clut ch, rear cl utch and
lrake No. 3.
CAUTION: EVALUATION
~I ~'«form
the test at nonnal operation
fluid
tam· (a) If " N" - " 0 " time lag is longer than specified:
perature (60 - 80° C or 1 22 - 176° FI. • Lin e prossuro too low
lbl
Be
sUte to aNow a one minute interval between
teats.
fc) Mak e three measurements and take t he aver·
age value.
MEASURE TIME LAG
Ill Fu11y appl y t he parki ng brake.
1111 Start the engine.
Check idling speed (A/C OFF)
" N" range 650 rpm
lei Shift the shift lever from " N " to "0" range.
Using e stop watch, measure the time it t ak es
from shifting the lever until the shock is felt.
r.,.., lag : Leu than 1.2 seconds
ldl In same manner. mea, s ure the time lag for " N"
- " R ...
rone lag: Leu than 1 .6 seconds
• Front clutch worn
• 00 one-w ay clutch not operating properly
lbl If
" N" -
"R" time lag is )Qnger than specified:
• Line pressure too low
• Rear cJut ch worn
• Brake No.3 worn
• 00 one-way clutch not operating properly
' •
•
e