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Page 11
DEFECT
ACTION
A.
High resistance in the ground
circuit
Clean and tighten all ground
connections
B.
Regulator set too high
Adjust to the proper setting
(If adjustment is possible)
Most late model vehicles use
a regulator which is of solid
state design and cannot be
adjusted.
These must be re-
placed when they are defective,
C.
Defective regulator
Replace Regulator
if the voltage reading is too low, the problem is either in the alternator,
regulator, or the battery.
9.
If charging voltage DOES NOT slowly INCREASE, this may indicate a
defective alternator.
Rotate the Function Switch to the alternator
position, turn lights on and operate the engine at approximately 1200
RPM.
Read the aiternator scale.
A reading in the gray defective
zone indicates defective diodes or windings in which case the alternator
diodes and windings are functloningproperly.(Figure
12).
10.
If a low or no charging rate is indlcated, check alternator output
under full field conditions by removing voltage regulator control
action.
(See pages 12& 13
for connections.)
To apply full field
voltage for maximum output, refer to vehicle specifications to
determine whether type "A" or "B" system is used for proper field bypass
connections.
CHARGING
AMPS
ALTERNA TOR
om, w _,m
CONDITION
V
RED
CLIP
ALTERNATOR
BLACK
CHARGING
V OLTS
ENGINE
GROUND
WIRES
VEHICLE
TO REGULATOR
12 VOLT
BATTERY
FIGURE 12
"J_'/
CHARGING
AMPS & VOLTS
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