On-Car Service - Subaru SVX 1992 Manual

3- 2 (W2A1I AUTOMATIC TRANSMISSION AND DIFFERENTIAL
2. On-Car Service
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A: INSPECTION
1 . ATF LEVEL
1) Raise ATF temperature to 60 to 80°C (140 to 176°F)
from 40 to 60°C (104 to 140°F) (when cold) by driving a
distance of 5 to 10 km (3 to 6 miles) .
The level of ATF varies with fluid temperature. Pay
attention to the fluid temperature when checking oil
level.
2) Ensure the vehicle is level . After selecting all posi-
tions (P, R, N, D, 3, 2, 1), set the selector leveler in "P"
range. Measure fluid level with the engine idling .
After running, idle the engine for one or two minutes
before measurement.
3) If the fluid level is below the center between upper
and lower marks, add the recommended ATF until the
fluid level is found within the specified range (above the
center between upper and lower marks) . When the
transmission is hot, the level should be above the center
of upper and lower marks, and when it is cold, the level
should be found below the center of these two marks .
a. Use care not to exceed the upper limit level.
b. ATF level varies with temperature . Remember that
the addition of fluid to the upper limit mark when the
transmission is cold will result in the overfilling of fluid.
4) Fluid temperature rising speed
e By idling the engine
Time for rising temperature to 60°C (140°F) with
atmospheric temperature of 0°C (32°F) : More than 25
minutes
(Reference)
Time for temperature rise to 30°C (86°F) with atmo-
spheric temperature of 0°C (32°F) : Approx . 8 minutes
9 By running the vehicle
Time for temperature rise to 60°C (140°F) with atmo-
spheric temperature of 0°C (32°F) : More than 10
minutes
5) Method for checking fluid level upon delivery or at
periodic inspection .
Check fluid level after a warm-up run of approx . 10
minutes . During the warm-up period, the automatic
transmission functions can also be checked .
2. DIFFERENTIAL GEAR OIL LEVEL
1) Ensure the vehicle
Do not check the oil level nor add oil to the case with
the front end of the vehicle jacked up ; this will result in
an incorrect reading of the oil level.
2) Check whether the oil level is between the upper (F)
and lower (L) marks . If it is below the lower limit mark,
add oil until the level reaches the upper mark.
3. OIL LEAKAGE
It is difficult to accurately determine the precise position
of a oil leak, since the surrounding area also becomes
wet with oil . The places where oil seals and gaskets are
used are as follows :
(Jointing portion of the case)
Transmission case and oil pump housing jointing
portion
Converter case and oil pump housing jointing portion
" Transmission case and extension case jointing por-
tion
Converter housing
Engine crankshaft oil seal
Torque converter impeller sleeve oil seal
" ATF cooler pipe connector
Torque converter
Converter case
Converter case
Axle shaft oil seal
" O-ring on the outside diameter of axle shaft oil seal
holder
" O-ring on the differential oil gauge
Differential oil drain plug
Speedometer cable mounting portion
" Location of steel balls
Oil pump housing
Oil pump housing (Defective casting)
" O-ring on the test plugs
Checking blind plugs
Differential gear breather
Automatic transmission case
Transmission case (Defective casting)
" Mating surface of oil pan
" O-ring on the test plugs
Checking blind plugs (steel balls)
Oil supply pipe connector
" ATF cooler pipe connector and gasket
Oil pan drain plug
" O-ring on the transmission harness holder
" O-ring on the oil pump plugs
" ATF breather
Shift lever oil seal
Extension case
Extension case (Defective casting)
" O-ring on the revolution sensor
Rear drive shaft oil seal
Checking blind plugs (steel ball)
" O-ring on the testing
Transmission cover
Transmission cover (Defective casting)
The point listed above should be checked for fluid leak.
Checking method is as follows :
(1) Place the vehicle in the pit, and check whether the
leaking oil is ATF or not . The ATF is wine red in color,
and can be discriminated easily from engine oil and
gear oil .
(2) Wipe clean the leaking oil and dust from a sus-
pectabie area, using a noninflammable organic sol-
vent such as carbon tetrachloride .
(3) Run the engine to raise the fluid temperature, and
set the selector lever to "D" in order to increase the
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