Transfer Clutch Pressure Test: Inspection

WARNING: During the transfer clutch pressure test, confirm safety in the vicinity and make sure no person is around the vehicle.

CAUTION: Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.

Check the engine oil level. Ref. to LUBRICATION (H4DOTC)>Engine Oil>INSPECTION .
Check the engine coolant level. Ref. to COOLING (H4DOTC)>Engine Coolant>INSPECTION .
Remove the test plug (transfer clutch pressure) using ST1 and ST2.
Preparation tool:

ST1: SOCKET (18270AA040)

ST2: SPECIAL TOOL CONDENSER (73099SG000)

Courtesy of SUBARU OF AMERICA, INC.
Set the ST1, ST2, ST3 and ST4.
CAUTION: Be careful when setting the tools so that the ST1 and ST2 do not touch the exhaust pipe.
NOTE:
- Use ST1 with genuine union screw (part No. 801914010) and gasket (part No. 803914060) attached.
- Use the ST3 with genuine O-ring (part No. 806911080) attached.
- Use the ST4 with genuine O-ring (part No. 806908150) attached.
Preparation tool:

ST1: ADAPTER HOSE B (34099AC020)

ST2: ADAPTER HOSE A (34099AC010)

ST3: PRESSURE GAUGE ADAPTER (18681AA000)

ST4: OIL PRESSURE GAUGE ASSY (498575400)

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.
Set the gauge so that it can be seen from the driver's seat.
Connect the Subaru Select Monitor.
Turn the ignition switch to ON. (Engine OFF)
Display [ATF Temp.] and [AWD. Sol. Set Current].
Turn off all systems causing an electrical load, such as headlights, A/C, seat heater and rear defogger.
Apply the parking brake.
Start the engine.
Turn OFF the pre-collision brake function.
Turn the X mode to OFF.
Check the CVTF level. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CVTF>INSPECTION .
Warm up until [ATF Temp.] reaches to 60 - 80 °C (140 - 176 °F).
Place wheel chocks at the front and rear of all wheels.
Record the transfer clutch pressure with the engine idling.
Specification:

0 kPa (0 kgf/cm² , 0 psi)
Shift the select lever to "D range".
While fully depressing the brake pedal with your left foot, depress the accelerator pedal until [AWD. Sol. Set Current] becomes 600 mA.
CAUTION: Do not perform this procedure for over 5 seconds at a time.
When the engine speed stabilizes, quickly record the transfer clutch pressure, and release the accelerator pedal.
Specification:

400 - 700 kPa (4.1 - 7.1 kgf/cm² , 58 - 102 psi)
Shift the select lever to "N range", and idle the engine for one minute or more.
Shift the select lever to "D range".
Depress the accelerator pedal to the full while fully depressing the brake pedal with your left foot.
CAUTION: Do not perform this procedure for over 5 seconds at a time.
When the engine speed stabilizes, quickly record the transfer clutch pressure, and release the accelerator pedal.
Specification:

1, 000 - 1, 200 kPa (10.2 - 12.2 kgf/cm² , 145 - 174 psi)
Shift the select lever to "N range", and idle the engine for one minute or more.
Remove the STs (ADAPTER HOSE B, ADAPTER HOSE A, PRESSURE GAUGE ADAPTER and OIL PRESSURE GAUGE ASSY), and temporarily install the test plug (transfer clutch pressure) using a new O-ring.
NOTE: Apply CVTF to the O-rings.

Tighten the test plug (transfer clutch pressure) using ST1 and ST2.

Preparation tool:

ST1: SOCKET (18270AA040)

ST2: SPECIAL TOOL CONDENSER (73099SG000)

Tightening torque:

Calculation formula

T = 25 N.m (2.5 kgf-m, 18.4 ft-lb) x L/(100 mm (3.94 in) + L)

T: Tightening torque
L: Effective length of torque wrench

NOTE: If the effective length of the torque wrench used is unknown, consult the manufacturer of the torque wrench.

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Effective length of the ST
Effective length of the torque wrench
Center of drive square of the ST
Center of drive square of the torque wrench
Center of the position where a force is applied by hand

Courtesy of SUBARU OF AMERICA, INC.

Check the CVTF level. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CVTF>INSPECTION .