Case Compact Tractor T90

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?

Warning: This procedure requires trained personnel with PPE!

Enter the temperature of the solution

Note: Hydrometer reading is only correct when the temperature of the solution is 80° F.

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

Enter the corrected hydrometer reading

Note: If the specific gravity readings between the cells show a variation of .025, the battery should be replaced.

Enter the specific gravity reading of the cells

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

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

Battery terminals and cables dirty or corroded?

Describe the condition of the battery tray, holdown terminals and cable ends

Is the battery case cracked or leaking?

Is the top sealing compound leaking?

Are the vent holes in the filler caps open?

Note: Only add pure or distilled water when the electrolyte level is low. DO NOT OVERFILL.

Amount of water consumed in oz.