Subaru 2002 IMPREZA Service Manual page 421

4. BRUSH AND BRUSH HOLDER
1) Brush length
Measure the brush length, and then replace if it ex-
ceeds the service limit.
Replace if abnormal wear or cracks are noticed.
Brush length:
Standard
12.3 mm (0.484 in)
Service limit
7.0 mm (0.276 in)
(A) Service limit line
(B) Brush
2) Brush movement
Be sure the brush moves smoothly inside brush
holder.
3) Brush spring force
Measure the brush spring force with a spring scale.
If it is less than the service limit, replace the brush
holder.
Brush spring force:
Standard
21.6 N (2.2 kgf, 4.9 lb) (when new)
Service limit
5.9 N (0.6 kgf, 1.3 lb)
STARTER
5. SWITCH ASSEMBLY
Be sure there is continuity between the terminals S
and M, and between terminal S and ground. Use a
circuit tester (set in "ohm").
Also check to be sure there is no continuity be-
tween terminal M and B.
Terminal / Specified resistance:
S — M / Less than 1 Ω Ω Ω Ω
S — Ground / Less than 1 Ω Ω Ω Ω
M — B / More than 1 M Ω Ω Ω Ω
H6M0496B
6. SWITCH ASSEMBLY OPERATION
1) Connect the terminal S of switch assembly to
positive terminal of battery with a lead wire, and
starter body to ground terminal of battery. The pin-
ion should be forced endwise on shaft.
CAUTION:
With the pinion forced endwise on shaft, starter
motor can sometimes rotate because current
flows, through pull-in coil, to motor. This is not
a problem.
2) Disconnect the connector from terminal M, and
then connect the positive terminal of battery and
terminal M using a lead wire and ground terminal to
starter body.
In this test set up, the pinion should return to its
original position even when it is pulled out with a
screwdriver.
SC-11
STARTING/CHARGING SYSTEMS
(A) Terminal S
(B) Terminal M
S6M0403
S6M0393A