Subaru Impreza 2004 - Page 296

SC(H4SO)-12
STARTING/CHARGING SYSTEMS
Starter
7. PERFORMANCE TEST
The starter should be submitted to performance
tests whenever it has been overhauled, to assure
its satisfactory performance when installed on the
engine.
Three performance tests, no-load test, load test,
and lock test, are presented here; however, if the
load test and lock test cannot be performed, carry
out at least the no-load test.
For these performance tests, use the circuit shown
in figure.
1) No-load test
With switch on, adjust the variable resistor to obtain
11 V, take the ammeter reading, and then measure
the starter speed. Compare these values with the
specifications.
No-load test (standards):
Voltage/Current
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
MAX. 11 V/95 A
2.0L Non-turbo AT, 2.5L AT
MAX. 11 V/90 A
2.0L Turbo
MAX. 11 V/90 A
Rotating speed
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
More than 2,500 rpm
2.0L Non-turbo AT, 2.5L AT
More than 2,000 rpm
2.0L Turbo MT
More than 3,000 rpm
2.0L Turbo AT
More than 2,000 rpm
2) Load test
Apply the specified braking torque to starter. The
condition is satisfactory if the current draw and
starter speed are within the specifications.
Load test (standards):
Voltage/Load
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
7.5 V/8.84 N·m (0.90 kgf-m, 6.5 ft-lb)
2.0L Non-turbo AT, 2.5L AT
7.7 V/16.7 N·m (1.70 kgf-m, 12.3 ft-lb)
2.0L Turbo MT
8 V/9.3 N·m (0.95 kgf-m, 6.9 ft-lb)
2.0L Turbo AT
7.7 V/16.7 N·m (1.70 kgf-m, 12.3 ft-lb)
Current/Speed
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
More than 300 A/870 rpm
2.0L Non-turbo AT, 2.5L AT
More than 400 A/710 rpm
2.0L Turbo MT
More than 280 A/860 rpm
2.0L Turbo AT
More than 400 A/710 rpm
3) Lock test
With the starter stalled, or not rotating, measure the
torque developed and current draw when the volt-
age is adjusted to the specified voltage.
Lock test (standards):
Voltage/Current
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
Less than 4 V/680 A
2.0L Non-turbo AT, 2.5L AT
Less than 3.5 V/960 A
2.0L Turbo MT
Less than 5 V/515 A
2.0L Turbo AT
Less than 3.5 V/960 A
Torque
1.6L MT, 2.0L Non-turbo MT, 2.5L MT and 1.6L
AT
17 N·m (1.73 kgf-m, 12.5 ft-lb)
2.0L Non-turbo AT, 2.5L AT
31 N·m (3.16 kgf-m, 22.9 ft-lb)
2.0L Turbo MT
16 N·m (1.63 kgf-m, 11.8 ft-lb)
2.0L Turbo AT
31 N·m (3.16 kgf-m, 22.9 ft-lb)
(A) Variable resistor
(B) Magnetic switch
(C) Starter body
SC-00077
(A)
(B)
(C)
12V
+
AV
B
S
M