Subaru Legacy 2003 Service Manual page 2210

L: Distance from end of extension case to end of
rear drive shaft
0.45 mm (0.0177 in): Gasket thickness
2: Distance from end of transmission case to
end of reduction drive gear
H: Shim clearance
0.05 — 0.25 mm (0.0020 — 0.0098 in)
Example:
When, L = 18.60 mm (0.7323 in), 2 = 15.05 mm
(0.5925 in)
Calculation when clearance is 0.05 mm
(0.0020 in)
H = (18.60 + 0.45) − 15.05 − 0.05 = 3.95
[H = (0.7323 + 0.0177) − 0.5925 − 0.0020 =
0.1555]
Calculation when clearance is 0.25 mm
(0.0098 in)
H = (18.60 + 0.45) − 15.05 − 0.25 = 3.75
[H = (0.7323 + 0.0177) − 0.5925 − 0.0098 =
0.1476]
After calculation, the value of "H" becomes be-
tween 3.75 and 3.95, therefore select bearing thick-
ness of 3.8.
Thrust needle bearing
Part No.
806536020
806535030
806535040
806535050
806535060
806535070
806535090
2. VTD MODEL
1) Insert the rear driveshaft into the reduction drive
gear and center differential assembly.
(A) Rear drive plate
(B) Center differential carrier
2) Using the special tool, measure the distance "L"
between the mating surface of extension case and
multi-plate clutch (LSD) piston.
ST 398643600 GAUGE
TRANSFER CLUTCH
Thickness mm (in)
3.8 (0.150)
4.0 (0.157)
4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
( A )
( B )
AT-00145
L = Measured value − 15 mm
(L = Measured value − 0.59 in)
A: Measured value
B: Thickness of special tool [15 mm (0.59 in)]
L: Distance between extension case edge and
rear driveshaft edge
3) Using the special tool, measure the distance "2"
between the mating surface of transmission case
and reduction drive gear edge.
2 = Measured value − 15 mm
(2 = Measured value − 0.59 in)
ST 398643600
B
A
A: Measured value
B: Thickness of special tool [15 mm (0.59 in)]
2: Distance between extension case edge and
reduction drive gear edge
4) Formula:
NOTE:
Calculation of "H":
When clearances are 0.05 mm (0.0020 in) and 0.25
mm (0.0098 in), select up to four adjusting shims
from the table, suitable for clearance value.
H = (L + 0.45 mm) − 2 − T
[H = (L + 0.0177 in) − 2 − T]
T: Shim clearance
L: Distance between extension case edge and
rear driveshaft edge
0.45 mm (0.0177 in): Gasket thickness
2: Distance between transmission case edge
and reduction drive gear edge
T: Shim thickness
0.05 — 0.25 mm (0.0020 — 0.0098 in)
Example:
AT-95
AUTOMATIC TRANSMISSION
ST1
B
A
L
AT-00146
GAUGE
ST
AT-00147