2000 Series Tractors
6.
Regulator/rectifier check: See Figure 7.30.
6a.
Check the ground.
•
With the engine running and the stator leads re-
connected to the regulator/rectifier, perform a
ground-side voltage-drop test from the regulator/
rectifier to the engine block.
•
If the voltage reading is greater than 0.1 Volts
D.C., replace or properly fasten the ground wire
that connects the regulator/rectifier to the engine
block. Retest to confirm good connection.
6b.
Bench Test: See Figure 7.31.
•
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
accompanying 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+
112
Figure 7.30
A.C.2
A.C.1 B+
Figure 7.31