MCi Crusader II 1989 Maintenance Manual page 232

Date
1-1-89
Page __
1-_1_2 _ _ _
MC-9 MAINTENANCE MANUAL
(B) Draw a horizontal line on vertical surface at height of
light center. Locate point on this horizontal line at which
projected centerline of vehicle intersects. Measure distance
between lamp centers and divide this distance equally on
either side of center mark. Then draw two vertical lines directly
ahead of each light center.
(C) Switch on high beam and cover one light adjusting
other.
(D) Remove light bezel retaining screws and aim light
beam with adjusting screws. Top screw provides horizontal
adjustment
(E) When aiming headlights, beam may appear distorted. A
new sealed beam unit must be installed to correct this
condition.
(F) After headlight is properly aligned, cover its beam and
proceed in same manner as above with opposite light
VOLTAGE REGULATOR
The voltage regulator illustrated in figure 7-25 is an assem-
bly composed principally of capacitors. resistors and transis•
tors. These components are mounted on a printed circuit board
to form a static unit containing no moving parts. Regulators of
this type have terminals marked NEG. FLO and POS.
The regulator limits the alternator voltage to a pre-set value
by controlling the alternator field current. This is the only func-
tion the regulator performs in the charging system.
The voltage at which the alternator operates is determined
by the regulator adjustment. Once adjusted. the alternator volt-
age remains constant. since the regulator is unaffected by
length of service, changes in temperature, or changes in alter-
nator output and speed.
A typical wiring diagram of a negative ground system is
illustrated in figure 7-26. This diagram shows only the basic
charging system components, and does not show other com-
ponents such as control relays.
TROUBLESHOOTING
Trouble in the charging system will usually be indicated by
undercharged or overcharged batteries. Either condition can
result from an improper voltage regulator setting.
POSITIVE
TERMINAL
Figure 7-25. Voltage Regulator.
The ideal voltage setting is the one which will maintain the
batteries in a fully charged condition with a .minimum depletion
of water. A record of water usage and battery specific gravity
checks over a service period of reasonable length will establish
the ideal voltage setting for the vehicle involved. Where
maintenance-free batteries are used. the absence of gassing
and the continuous appearance of the green dot in the built-in
hydrometer indicate the regulator voltage setting is satisfactory.
REGULATOR
-
-
NEG._F. POS.
-
"
ALTERNATOR
SWITCH
+
BATTERY
Figure 7-26. Charging System Diagram.