Doosan DX60R Shop Manual page 414

No-Load Test
Test the characteristics of the starter motor by performing a no-
load test.
The starter motor can be damaged if operated continuously
longer than 10 seconds while performing the no-load test.
1. Secure the starting motor in a vise or other suitable fixture.
2. Connect an ammeter (1, Figure 376) in series between the
battery positive (+) terminal (2, Figure 376) and the main
positive (+) terminal (3, Figure 376) on the starter motor.
NOTE: The ammeter and all wire leads used in this test
must have a capacity equal to or greater than
the amperage draw specification for the starter
motor being tested.
3. Connect a wire lead between the mounting base of the
starter motor (4, Figure 376) and the battery negative
terminal (5, Figure 376).
4. Connect a voltmeter (7, Figure 376) to the battery negative (-
) terminal (5, Figure 376) and the main positive (+) battery
terminal (3, Figure 376) on the starter motor.
5. Install a switch (6, Figure 376) in a circuit between the
battery positive (+) terminal (2, Figure 376) and the starter
magnetic switch (solenoid) terminal (8, Figure 376) on the
starter motor.
6. Use a suitable tachometer to monitor the rpm of the
starter.
7. Turn the switch to the ON position. Monitor the rpm,
amperage draw and voltage. For test specifications, for
the appropriate starter motor.
Installation of Starter Motor
1. Reinstall the starter motor to the flywheel housing.
2. Reinstall the starter mounting bolts (1, Figure 377). Tighten
the bolts to specification. See "Tightening Torques for
Standard Bolts and Nuts" on page -48
3. Reconnect the electrical wires to the magnetic switch
assembly (solenoid). Be sure to place the cover over the
battery positive (+) cable connection.
4. Reconnect the battery cables at the battery.
Engine
Page 234
CAUTION
Figure 376
Figure 377
SP001693