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 Fig 1 .

1. No-load test

   With switch on, adjust the variable resistance for the voltage to obtain 11 V, read the ammeter and measure the rotating speed. Compare these values with the specifications.

   No-load test (Standard): 

   Voltage / Current 

   MT model 

   11 V / 90 A or less 

   AT model 

   11 V / 90 A or less 

   Rotating speed 

   MT model 

   1,820 RPM or more 

   AT model 

   1,720 RPM or more 

2. Load test

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

   Load test (Standard): 

   Voltage / Load 

   MT model 

   8 V / 7.76 N.m (0.79 kgf-m, 5.7ft-lb) 

   AT model 

   8 V / 12.78 N.m (1.30 kgf-m, 9.4 ft-lb) 

   Current / Speed 

   MT model 

   280 A / 900 RPM or more 

   AT model 

   370 A / 850 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 the specified voltage.

Lock test (Standard): 

Voltage / Current 

MT model 

3 V / 900 A or less 

AT model 

3 V / 900 A or less 

Torque 

MT model 

13.62 N.m (1.38 kgf-m, 10.0 ft-lb) 

AT model 

15.42 N.m (1.57 kgf-m, 11.3 ft-lb)