K 1500 Truck 4WD V8-5.7L VIN R (1997)
Rectifier Bridge Test
Rectifier Bridge Test
To test the rectifier bridge, connect an ohmmeter to the grounded heat sink and one of the three terminals, while pressing down firmly on the flat metal
clip. Observe the ohmmeter reading and reverse the lead connectors to the grounded heat sink and the same metal clip. It both readings are the same,
replace the rectifier bridge. A good rectifier bridge will give one high and one low reading. Repeat this procedure between the grounded heat sink and
the other two terminals, and between the insulated heat sink and each of the three terminals. This makes a total of six tests, with two readings taken for
each test.
Some digital ohmmeters cannot be used to test diodes in the rectifier bridge. Consult the ohmmeter manufacturer to determine your ohmmeter's
capabilities.
Regulator
The regulator cannot be tested outside of the generator. If the rotor, stator, and rectifier bridge are OK, but the generator still produces more than 16
volts or does not produce within 15 amperes of the rated output during a generator output test, replace the regulator.
Slip Ring End Frame
ASSEMBLE
1. Two locators from the brush holder with needle-nose pliers or side cutters.
A. File the jagged edges down to the level of the surrounding material. Keep loose particles away from the brush slots.
B. Blow away any dust.
CS-144 Components (Part 1 Of 2)
