Subaru LEGACY 2006 Manual page 3291

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AUTOMATIC TRANSMISSION
5. Stall Test
A: INSPECTION
NOTE:
The stall test is extremely important in diagnosing
the condition of an automatic transmission and en-
gine. The test is necessary to measure the engine
stall speeds in "R" and "2nd of manual mode".
Purposes of the stall test:
• Operational check of the automatic transmission
clutch
• Operational check of the torque converter clutch
• Engine performance check
1) Check that the throttle valve fully opens.
2) Check that the engine oil level is correct.
3) Check that the coolant level is correct.
4) Check that the ATF level is correct.
5) Check that the differential gear oil level is cor-
rect.
6) Increase the ATF temperature to 70 to 80°C
(158 to 176°F) by idling the engine for approximate-
ly 30 minutes (with select lever set to "N" or "P").
7) Place the wheel chocks at the front and rear of
all wheels and apply the parking brake.
8) Move the manual linkage to ensure it operates
properly, and then set to the "2nd gear of manual
mode".
9) While forcibly depressing the foot brake pedal,
gradually depress the accelerator pedal until the
engine operates at full throttle.
(A)
(A) Brake pedal
(B) Accelerator pedal
Stall Test
10) When the engine speed stabilizes, quickly
record the engine speed and release accelerator
pedal.
11) Shift the select lever to "N" range, and cool
down the engine by idling it for more than one
minute.
12) If the stall speed in "2nd gear of manual mode"
is higher than specifications, low clutch slipping
and 2-4 brake slipping may occur. To identify this,
conduct the same test as above in "R" range.
AT-02205
(B)
AT-01326
4AT-30