SC(H4SO)-15
Starter
STARTING/CHARGING SYSTEMS
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 resistance until
the voltage is 11 V, read the value of ammeter to
measure starter speed. Compare these values with
the standard.
No-load test (standard):
Voltage/Current
MT model
Max. 11 V/95 A
AT model
Max. 11 V/90 A
Rotating speed
MT model
2,500 rpm or more
AT model
2,000 rpm or more
2) Load test
Apply the specified braking torque to starter. The
condition is normal if the current draw and starter
speed are within standard.
Load test (standard):
Voltage/Load
MT model
7.5 V/8.84 N·m (0.9 kgf-m, 6.5 ft-lb)
AT model
7.7 V/16.7 N·m (1.7 kgf-m, 12.3 ft-lb)
Current/Speed:
MT model
300 A/870 rpm or more
AT model
400 A/710 rpm or more
3) Lock test
With the starter stalled, or not rotating, measure the
torque developed and current draw when the volt-
age is adjusted to standard voltage.
Lock test (standard):
Voltage/Current
MT model
4 V/680 A or less
AT model
3.5 V/960 A or less
Torque
MT model
17 N·m (1.7 kgf-m, 12.5 ft-lb) or more
AT model
31 N·m (3.2 kgf-m, 22.9 ft-lb) or more
(A) Variable resistance
(B) Magnet switch
(C) Starter body
(A)
(B)
(C)
12V
+
A
V
B
S
M
SC-00077
Summary of Contents for 2009 IMPREZA
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Page 21: ...NT 4 Note NOTE Lift Rigid rack A Attachment NT 00241 A A Attachment NT 00242 A...
Page 23: ...NT 6 Note NOTE A Front B Rear 1 Front crossmember 2 Rear differential 1 2 A B NT 00210...
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Page 324: ...ME H4SO 106 Engine Noise MECHANICAL...
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Page 725: ...EN H4SO diag 308 General Diagnostic Table ENGINE DIAGNOSTICS...
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