Transfer Clutch Pressure Test: Inspection

WARNING: This page is about a different variant/trim than selected.

CAUTION:

Directly after the vehicle has been running or the engine has been idling for a long time, the CVTF is hot. Be careful not to burn yourself.
Make sure no other person is around the vehicle during transfer clutch pressure test measurement.

Lift up the vehicle.
Remove the under cover front - transmission. (With under cover front - transmission)
Remove the rear exhaust pipe from center exhaust pipe.

Fig 1: Locating Exhaust Pipe Gasket Nuts
Courtesy of SUBARU OF AMERICA, INC.
Remove the center exhaust cover.
Set the transmission jack under the transmission.
Remove the mounting bolt of rear crossmember.

Fig 2: Locating Rear Crossmember Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.
Lower the rear side of transmission until the transfer clutch pressure test plug can be removed.
Using the ST, remove the transfer clutch pressure test plug.
ST 18270AA040 SOCKET

Fig 3: Removing Transfer Clutch Pressure Test Plug
Courtesy of SUBARU OF AMERICA, INC.
Set the ST1, ST2, ST3 and ST4 to the transmission.
NOTE:
- Use ST1 ADAPTER HOSE B with genuine union screw (Part No. 801914010) and gasket (Part No. 803914060) attached.
- Use ST3 PRESSURE GAUGE ADAPTER with genuine O-ring (Part No. 806911080) attached.
  ST1 34099AC020 ADAPTER HOSE B
  
  ST2 34099AC010 ADAPTER HOSE A
  
  ST3 18681AA000 PRESSURE GAUGE ADAPTER
  
  ST4 498575400 OIL PRESSURE GAUGE ASSY
Fig 4: Identifying Gasket (Genuine Part) And Union Screw (Genuine Part)
Courtesy of SUBARU OF AMERICA, INC.

Fig 5: Identifying O-Ring (Genuine Part)
Courtesy of SUBARU OF AMERICA, INC.
Raise the transmission, and install the rear crossmember.
Tightening torque:

70 N.m (7.1 kgf-m, 51.6 ft-lb)

Fig 6: Locating Rear Crossmember Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the rear exhaust pipe to center exhaust pipe.
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)

Fig 7: Locating Exhaust Pipe Gasket Nuts
Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Connect the Subaru Select Monitor to the data link connector and read the current data.

Check the transfer clutch pressure as in secondary pressure (line pressure) test. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Secondary Pressure (Line Pressure) Test .

NOTE:

For models with X mode switch, turn OFF the switch for inspection.
Use Subaru Select Monitor for switching to FWD mode. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>AWD ON/OFF Switching Mode .
If no oil pressure is produced, if it does not change in AWD mode or if oil pressure is produced in FWD mode, there may be a problem in the control valve body.

Range position	ON Duty ratio (%)	Accelerator pedal opening angle (%)	Standard transfer clutch pressure kPa (kgf/cm² , psi)
Range position	ON Duty ratio (%)	Accelerator pedal opening angle (%)	AWD mode	FWD mode
D	95 - 100	Fully opened (100)	1, 000 - 1, 200 (10.2 - 12.2, 145 - 174)	-
	60	Adjust ON Duty ratio to 60%.	400 - 700 (4.1 - 7.1, 58 - 102)	-
	0	Fully closed (0)	-	0 (0, 0)
N or P	0	Fully closed (0)	0	-

Lift up the vehicle.
Remove the rear exhaust pipe from center exhaust pipe.

Fig 8: Locating Exhaust Pipe Gasket Nuts
Courtesy of SUBARU OF AMERICA, INC.
Set the transmission jack under the transmission.
Remove the mounting bolt of rear crossmember.

Fig 9: Locating Rear Crossmember Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.
Lower the rear side of transmission to the position where the ST can be removed.
Remove the ST.
Install the test plug using ST1 and ST2.
NOTE:
- Use new O-rings.
- Apply CVTF to the O-rings.
- Tighten the test plug while directly aligning ST2 and torque wrench.
ST1 18270AA040 SOCKET

ST2 73099SG000 SPECIAL TOOL CONDENSER

Tightening torque:

Calculation formula

T = L/(100 mm (3.94 in) +L) x 22 N.m (2.2 kgf-m, 16.2 ft-lb)

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.

Fig 10: Checking Torque Wrench Length
Courtesy of SUBARU OF AMERICA, INC.

Fig 11: Installing Test Plug Using ST1 And ST2
Courtesy of SUBARU OF AMERICA, INC.
Raise the transmission, and install the rear crossmember.
Tightening torque:

70 N.m (7.1 kgf-m, 51.6 ft-lb)

Fig 12: Locating Rear Crossmember Mounting Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the center exhaust cover.
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)
Install the rear exhaust pipe to center exhaust pipe.
NOTE: Use a new gasket.

Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)

Fig 13: Locating Exhaust Pipe Gasket Nuts
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover front - transmission. (With under cover front - transmission)
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)
Lower the vehicle.