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.

Fig 1: Performing Performance Test

Courtesy of SUBARU OF AMERICA, INC.

1. No-load test

   Adjust the variable resistance with the switch on until the voltage is 11 V, and read the value displayed on the ammeter to measure rotating speed. Compare these values with the standard.

   No-load test (standard): 

   Voltage/Current 

   Max. 11 V/90 A or less 

   Rotating speed 

   1, 550 rpm or more 

2. Load test

   Apply the specified braking torque to starter. The condition is normal if the current draw and rotating speed are within standard.

   Load test (standard): 

   Voltage/Load 

   8 V/12.8 N.m (1.3 kgf-m, 9.4 ft-lb) 

   Current/Rotating speed 

   370 A/800 rpm or more 

3. Lock test

   With the starter stalled, or not rotating, measure the torque developed and current draw when the voltage is adjusted to standard voltage.

   Lock test (standard): 

   Voltage/Current 

   3 V/750 A or less 

   Torque 

   19.0 N.m (1.9 kgf-m, 14.0 ft-lb)