Subaru Legacy III (2000-2003 year). Manual - part 555

AT-114

AUTOMATIC TRANSMISSION

OIL PUMP

4) Attach the new O-ring to the oil seal retainer with
vaseline. Install the seal to the oil pump housing
bore.

5) Install the oil seal retainer taking care not to
damage the oil seal lips. Then secure with three
bolts.

Tightening torque:

7 N·m (0.7 kgf-m, 5.1 ft-lb)

6) Make sure the O-ring is fitted correctly in posi-
tion.
7) Secure the housing with two nuts and the bolt.

Tightening torque:

42 N·m (4.3 kgf-m, 31 ft-lb)

8) Install the torque converter clutch case assem-
bly to the transmission case assembly. <Ref. to AT-
85, INSTALLATION, Torque Converter Clutch As-
sembly.>
9) Install reduction driven gear. <Ref. to AT-102,
INSTALLATION, Reduction Driven Gear.>
10) Install the reduction drive gear. (MPT model)
<Ref. to AT-104, INSTALLATION, Reduction Drive
Gear.>
11) Install the center differential carrier. (VTD mod-
el) <Ref. to AT-106, INSTALLATION, Center Differ-
ential Carrier.>
12) Combine the extension case with the transmis-
sion case, and install vehicle speed sensor 1 (rear).
<Ref. to AT-86, INSTALLATION, Extension Case.>
13) Insert inhibitor switch and transmission con-
nector into stay.

14) Install air breather hose. <Ref. to AT-83, IN-
STALLATION, Air Breather Hose.>
15) Install the oil cooler pipe. <Ref. to AT-80, IN-
STALLATION, ATF Cooler Pipe and Hose.>
16) Install the oil charger pipe with O-ring. <Ref. to
AT-84, INSTALLATION, Oil Charger Pipe.>
17) Insert the input shaft while turning lightly by
hand. At this time, not to damage the bushing.

Normal protrusion A:

50 — 55 mm (1.97 — 2.17 in)

18) Install the torque converter clutch assembly.
<Ref. to AT-85, INSTALLATION, Torque Converter
Clutch Assembly.>

(A) O-ring

(A) Oil seal retainer

(B) Drive pinion shaft

(A) Oil pump housing

AT-00186

( A )

AT-00187

( A )

( B )

AT-00188

( A )

(A) Transmission harness

(B) Inhibitor switch harness

AT-00174

( B )

( A )

AT-00291

A

AT-115

AUTOMATIC TRANSMISSION

OIL PUMP

19) Install the transmission assembly to the vehi-
cle. <Ref. to AT-42, INSTALLATION, Automatic
Transmission Assembly.>

C: DISASSEMBLY

1) Remove four seal rings.

2) Lightly tap the end of the stator shaft to remove
the cover.

3) Remove the inner and outer rotor.

D: ASSEMBLY

1) Install oil pump rotor assembly to oil pump hous-
ing.

2) Align both pivots with the pivot holes of the cov-
er, and install the oil pump cover being careful not
to apply undue force to the pivots.

Tightening torque:

25 N·m (2.5 kgf-m, 18.1 ft-lb)

3) After assembling, turn the oil pump shaft to
check for smooth rotation of the rotor.

(A) Seal rings

(A) Oil pump cover

(B) Oil pump housing

(A) Inner rotor

(B) Outer rotor

AT-00189

( A )

( A )

AT-00190

( A )

( B )

AT-00191

( A )

( B )

(A) Inner rotor

(B) Outer rotor

(A) Oil pump cover

(B) Oil pump housing

AT-00191

( A )

( B )

AT-00190

( A )

( B )

AT-116

AUTOMATIC TRANSMISSION

OIL PUMP

4) Install the oil seal retainer and new seal rings.
After adjusting the drive pinion backlash and tooth
contact. <Ref. to AT-117, ADJUSTMENT, Oil
Pump.>

E: INSPECTION

1) Check seal ring and O-ring oil seal for breaks or
damage.
2) Check other parts for dents or abnormalities.
3) Selection of oil pump rotor assembly

(1) Tip clearance
Install inner rotor and outer rotor to oil pump.
With rotor gears facing each other, measure
crest-to-crest clearance.

Tip clearance:

0.02 — 0.15 mm (0.0008 — 0.0059 in)

(2) Side clearance
Set a depth gauge to oil pump housing, then
measure oil pump housing-to-rotor clearances.

Side clearance:

0.02 — 0.04 mm (0.0008 — 0.0016 in)

(3) If depth and/or side clearances are outside
specifications, replace rotor assembly.

• Measure the total end play and adjust to within
specifications.<Ref. to AT-117, ADJUSTMENT, Oil
Pump.>

(A) Seal rings

(A) Thickness gauge

(B) Inner rotor

(C) Outer rotor

AT-00189

( A )

( A )

AT-00192

( A )

( B )

( C )

(A) Depth gauge

(B) Inner rotor

(C) Outer rotor

Oil pump rotor assembly

Part No.

Thickness mm (in)

15008AA060

11.37 — 11.38 (0.4476 — 0.4480)

15008AA070

11.38 — 11.39 (0.4480 — 0.4484)

15008AA080

11.39 — 11.40 (0.4484 — 0.4488)

AT-00193

( A )

( B )

( C )

AT-117

AUTOMATIC TRANSMISSION

OIL PUMP

F: ADJUSTMENT

1) Using ST, measure the distance from the trans-
mission case mating surface to the recessed por-
tion of the high clutch drum “L”.
ST

398643600

GAUGE

2) Using ST, measure the distance from the oil
pump housing mating surface to the top surface of
the oil pump cover with thrust needle bearing.
ST

398643600

GAUGE

3) Calculation of total end play
Select suitable bearing race from among those list-
ed in this table so that clearance C is in the 0.25 to
0.55 mm (0.0098 to 0.0217 in) range.
C = (L + G) 

−

 

2

4) After completing end play adjustment, insert the
bearing race in the recess of the high clutch. Attach
the thrust needle bearing to the oil pump cover with
vaseline.
5) After correctly installing the new gasket to the
case mating surface, carefully install the oil pump
housing assembly. Be careful to avoid hitting the
drive pinion against the inside of the case.
6) Install both parts with dowel pins aligned. Make
sure no clearance exists at the mating surface.

C

Clearance between concave portion of high clutch 
and end of clutch drum support

L

Length from case mating surface to concave portion 
of high clutch

G

Gasket thickness [0.28 mm (0.0110 in)]

2

Height from housing mating surface to upper surface 
of clutch drum support

L

AT-00194

ST

AT-00195

ST

L

G

AT-00196

Thrust needle bearing

Part No.

Thickness mm (in)

806528050

4.1 (0.161)

806528060

4.3 (0.169)

806528070

4.5 (0.177)

806528080

4.7 (0.185)

806528090

4.9 (0.193)

806528100

5.1 (0.201)