RADIATOR 2B6561 - Caterpillar

If connections between connectors are not tight, they can cause either continuous or intermittent problems. Make sure all connectors in a problem circuit are fastened tightly before other tests are made.The 5P7277 Voltage Tester can be used to check if voltage is present in a circuit. It has a lamp that is lighted when there is voltage present in the range of 12 to 30 volts.The 8S4627 Circuit Tester can be used to check circuits without voltage for continuity. The lamp will indicate continuity with as much as 10 ohms resistance in a circuit. The lamp will not light with more than approximately 10 ohms in a circuit.A Digital Multimeter (there are several different models available) can be used to measure voltage, resistance, or current. It can also be used to test diodes. Refer to the instructions that come with the multimeter for specifics on different uses of it. The multimeter can be used to measure up to 10 amps of continuous AC or DC current.The 8T0900 AC/DC Clamp On Ammeter can be used to measure current from 1 to 1200 amps. This can be useful in testing starting and charging circuits. It allows electrical current measurements to be made without breaking the circuit or disturbing the insulation on conductors up to 19 mm (.75 in) in diameter.
5P7277 VOLTAGE TESTER
CATERPILLAR DIGITAL MULTIMETER (6V3030, 6V7070, 6V7800)
8S4627 CIRCUIT (CONTINUITY) TESTER
8T0900 AC/DC CLAMP-ON AMMETER Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Normally open switch that will close with an increase of a specific condition (temp., press., etc.). Normally open switch that is closed due to an applied condition, and will open again with a specific decrease in that condition. Normally closed switch that will open with an increase of a specific condition. Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition. The circle indicates that the component has screw terminals and a wire can be disconnected from it. No circle indicates that the wire cannot be disconnected from the component. This indicates that the component has a wire connected to it that is connected to ground (to the vehicle). This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the vehicle.