Case Compact Tractor 190

Warning: Ensure the battery is disconnected from the tractor before proceeding

Initial voltage reading from the volt meter

Connect a load equal to 3 times the amp hour rating of the battery

Voltage reading after 15 seconds

Is the voltage reading less than 9.5 volts?

If the voltage reading is less than 9.5 volts, the battery should be replaced

Sign off on the battery bench load test

Warning: This procedure requires trained personnel with PPE!

Enter the specific gravity reading of the solution

Enter the temperature of the solution

Note: If the temperature is above or below 80°F, adjust the specific gravity reading by adding or subtracting .004 gravity points for every 10° difference.

Does the specific gravity reading vary by .025 between cells?

If yes, the battery should be replaced.

The battery should never be allowed to drop below 75% charge while not in use.

Enter the battery terminal voltage while charging

NOTE: On Spark Ignition engines remove the center coil wire to prevent engine from starting

Connect a volt meter (12 volt) between the positive and negative terminals of the battery, Figure F-5

Crank the engine for 15 seconds and record voltage

Connect voltmeter (12 volt) between the starter generator 'A' terminal and ground on starter generator frame, Figure F-5

Crank the engine and record voltage

If voltage is not the same or varies more than .5 volt, check the battery cables, clean and tighten connections

Sign off on the battery cranking voltage test

Warning: This procedure requires trained personnel with PPE!

Abrasive type cleaning machine available?

If abrasive type cleaning machine is not available, report to the maintenance team and stop the procedure

Electrode sparking areas filed to obtain bright flat parallel surfaces?

Plug washed in a good cleaning solvent and blown dry with air pressure?

Gap between the electrodes (in inches)

Set the gap by bending the ground or outside electrode, never try to bend the center electrode as the insulator will crack.

Ensure the drive belt is adjusted properly.

Disconnect all cables and wires to generator.

Connect ammeter and variable resistance in series between the 'A' terminal and generator frame.

Connect voltmeter from the 'A' terminal to the frame.

Install jumper lead from the 'F' terminal to the frame.

Enter the RPM at which the unit is driven.

Enter the voltage reading from the voltmeter.

Enter the amperage reading from the ammeter.

Is the ammeter reading lower than specified amperage?