Subaru IMPREZA 2002 Service Manual page 321

GENERATOR
STARTING/CHARGING SYSTEMS
4. BRUSH
1) Measure the length of each brush. If wear ex-
ceeds the service limit, replace the brush. Each
brush has the service limit mark (A) on it.
Brush length:
Standard
Service limit
18.5 mm (0.728 in)
5.0 mm (0.197 in)
H6M0499B
Lu
2) Checking brush spring for proper pressure:
Using a spring pressure indicator, push the brush
into the brush holder until its tip protrudes 2 mm
(0.08 in). Then measure the pressure of the brush
spring. If the pressure is less than 2.648 N (270 g,
9.52 oz), replace the brush spring with a new one.
The new spring must have a pressure of 4.609 to
5.786 N (470 to 590 g, 16.58 to 20.81
02).
5.
BEARING (FRONT
SIDE)
1) Check the front ball bearing. If resistance is felt
while rotating, or if abnormal noise is heard, re-
place the ball bearing.
2) Replacing front bearing:
(1) Remove the front bearing retainer.
(2) Closely install a fit tool on the bearing inner
race. Press the bearing down out of front brack-
et with a hand press or vise. A socket wrench
can serve as the tool.
S6M0409A
(A) Front bracket
(B) Socket wrench
(3) Set a new bearing and closely install a fit
tool on the bearing outer race. Press the bearing
down into place with a hand press or vise. A
socket wrench can serve as the tool.
(4) Install the front bearing retainer.
I
S6M0410A
(A) Bearing
(B) Socket wrench
(C) Front bracket
SC-17