Subaru Impreza 2003, Service Manual

Page: 1616 / 3610

4AT-84
AUTOMATIC TRANSMISSION
TRANSFER CLUTCH
12) Install the transfer clutch assembly without
damaging seal ring.
E: INSPECTION
• Check the drive plate facing for wear and dam-
age.
• Check the snap ring for wear, return spring for
permanent set and breakage, and return spring for
deformation.
• Check the lathe cut seal ring for damage.
• Measure the extension end play and adjust it to
within specifications.
<Ref. to 4AT-84, ADJUSTMENT, Transfer Clutch.>
1) Inspect clearance between snap ring and pres-
sure plate.
2) Before measuring clearance, place the same
thickness of shim on both sides to prevent pressure
plate from tilting.
3) If the clearance is not within specification, adjust
it by selecting a suitable pressure plate on the
transfer clutch piston side.
Standard value:
0.7 — 1.1 mm (0.028 — 0.043 in)
Allowable limit:
1.6 mm (0.063 in)
4) Check if the tight corner braking does not occur
when the vehicle is started with steering wheel held
at fully turned position. If tight corner braking oc-
curs, perform the following procedures.
(1) With the steering wheel held at fully turned
position, drive the vehicle in “D” range and with
vehicle speed at approx. 5 km/h (3 MPH) in both
clockwise and counterclockwise directions for
approx. ten times each, while repeating acceler-
ation and braking intermittently.
(2) If the tight corner braking still persists, drive
the vehicle again in a circle for several laps.
F: ADJUSTMENT
1. MPT MODEL
1) Measure distance “A” from end of extension
case and rear drive shaft with ST.
ST
398643600 GAUGE
(A) Transfer clutch
(B) Extension case
AT-00125
(A)
(B)
AT-00142
Pressure plates
Part No. Thickness mm (in)
31593AA151 3.3 (0.130)
31593AA161 3.7 (0.146)
31593AA171 4.1 (0.161)
31593AA181 4.5 (0.177)
A: Measured value
A
ST
AT-01029