Electrical
117
7b. Bench Test: See Figure 7.37.
• Set a digital multi-meter to read on the X100Ω
scale.
• With the key OFF and the fuse removed, unplug all
the wires from the regulator/rectifier.
• Remove the regulator/rectifier from the engine (not
strictly necessary, but provides easy access).
• Make the resistance tests described in the accom-
panying table.
B+ is the D.C. terminal
A.C.1 is the A.C. terminal nearest B+
A.C.2 is the A.C. terminal furthest from B+
8. If the regulator/rectifier fails any one of these tests,
replace it with a new one.
Test # Pos. Probe COM. Probe Results
1 Housing B+ O.L. (infinite resistance)
2 Housing A.C. 1 O.L. (infinite resistance)
3 Housing A.C.2 > 1.0 Ω (5 second delay)
4 B+ A.C.1 0 Ω (Perfect continuity)
5 B+ A.C.2 > 1.0 Ω
6 B+ Housing > 1.0 Ω
7 A.C.1 B+ 0 Ω (Perfect continuity)
8 A.C.1 A.C.2 > 1.0 Ω
9 A.C.1 Housing > 1.0 Ω
10 A.C.2 B+ O.L. (infinite resistance)
11 A.C.2 A.C.1 O.L. (infinite resistance)
12 A.C.2 Housing > 1.0 Ω
Figure 7.37
A.C.2 A.C.1 B+
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