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PANEL GP-CIRCUIT BREAKER 3156372 - Caterpillar



3156372 PANEL GP-CIRCUIT BREAKER Caterpillar parts C32 PANEL
Rating:
17
Alternative (cross code) number:
CA3156372
315-6372
3156372
Caterpillar 3156372 PANEL GP-CIRCUIT BREAKER

Buy PANEL GP-CIRCUIT BREAKER 3156372 Caterpillar genuine, new aftermarket tractor parts with delivery
GENERATOR SET,

Compatible equipment models: 3156372:

GENERATOR SET  C32   Caterpillar
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How A Relay Functions
Basically, a relay is a remote-controlled electrical switch that is turned on and off by a small amount of electrical current to let a large amount of current pass through its contacts to power a load (such as horns and starters). Low current flows through the relay coil and forms an electromagnet, which opens or closes the relay contacts (switch). See Illustration 1. Note the locations of the coil terminals and the contact terminals. Unless otherwise shown, contact designations of "normally open" (N.O.) and "normally closed" (N.C.) relate to the switch contact state without power applied to the relay coil.
When the relay contacts are closed, a large amount of current can now flow through the two contact terminals to power the desired load.
Testing The Relay
This test determines if there is an open in the relay coil AND if the voltage drop across the contact terminal is within specification. For 24V systems, this voltage drop should typically be less than 0.5V, with a maximum allowable drop of one volt. For 12V systems, the drop should be less than 0.25V and the maximum allowable is 0.5V.
Illustration 1. Schematics of two types of relays. The test should determine faulty relays. However, there are many other variables that can cause electrical problems.1. Provide power to the relay, and if possible, turn on all equipment that is powered by the relay contacts. The engine can either be off or running.2. Connect the multimeter across the terminals as shown in Illustration 2 to check for system voltage at the relay coil terminals. For 24V systems, this voltage should be more than 22V. For 12V systems, it should be more than 11V. If voltage is less than specified or zero, proceed with the remainder of Step 2, otherwise go to Step 3. ... Connect the multimeter between the battery side of the relay coil and machine ground. The multimeter should read system voltage.... If not, there is a faulty connection between the source of battery positive and the positive connection of the coil. Correct this fault before proceeding with the test.... If system voltage is present between the positive side of the coil and ground, but not to the ground side of the coil, then there is a faulty connection between the ground side of the coil and frame ground. Correct fault before proceeding.
Illustration 2. Checking to see if system voltage is available across the relay coil terminals.3. Connect the multimeter as shown in Illustration 3 to check for system voltage at the relay contact battery terminal. If no voltage is present, correct this condition before proceeding.
Illustration 3. Checking to see if system voltage is available at the relay contact battery terminal.4. After you are sure that system voltage is present across the relay coil terminals and at the contact battery terminal, you are ready to check the relay contacts (switch). Connect the multimeter across the contact terminals as shown in Illustration 4. Use the 200 DCV scale.
Illustration 4. Checking the

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Parts panel Caterpillar catalog:

2527494 PANEL GP-CIRCUIT BREAKER
3508, 3508B, 3512, 3512B, 3512C, 3516, 3516B, 3516C, C175-16, C27, C32
2527476 PANEL GP-CIRCUIT BREAKER
3508, 3508B, 3512, 3512B, 3512C, 3516, 3516B, 3516C, C175-16, C27, C32
1521138 PANEL
3406C, 3412, 3512B, 3516, 3516B, C27, C32, G3516B, PM3412, PM3456, PM3508, PM3512, PM3516, PMG3516
3676824 PANEL AS-FRONT
3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, C15, C18, C27, C32, G3512, G3516, G3516B, G3516C, G3516E, G3520C, SR4B
3676826 PANEL
3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, C15, C18, C27, C32, G3512, G3516, G3516B, G3516C, G3516E, G3520C, SR4B
4187701 PANEL AS-FRONT
3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, C15, C18, C27, C32, G3512, G3516, G3516B, G3516C, G3516E, G3520C, SR4B
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