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.
- 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
Non-turbo, MT model
MAX. 11 V/95A
Turbo, MT model
MAX. 11 V/90A
AT model
MAX. 11 V/90 A
Rotating speed
Non-turbo, MT model
More than 2,500 rpm
Turbo, MT model
More than 2,860 rpm
AT model
More than 2,000 rpm
- 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
Non-turbo, MT model
8 V/8.5 N.m (0.87 kgf-m, 6.3 ft-lb)
Turbo, MT model
8 V/9.3 N.m (0.95 kgf-m, 6.9 ft-lb)
AT model
8 V/9.8 N.m (1.0 kgf-m, 7.2 ft-lb)
Current/Speed
Non-turbo, MT model
More than 280 A/970 rpm
Turbo, MT model
More than 280 A/860 rpm
AT model
More than 280 A/1,000 rpm
- 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 (standards):
Voltage/Current
Non-turbo, MT model
Less than 4 V/680 A
Turbo, MT model
Less than 4 V/515 A
AT model
Less than 3.5 V/960 A
Torque
Non-turbo, MT model
17 N.m (1.73 kgf-m, 12.5 ft-lb)
Turbo, MT model
16 N.m (1.63 kgf-m, 11.8 ft-lb)
AT model
31 N.m (3.16 kgf-m, 22.9 ft-lb)