Vanguard OHV V-Twin User Manual page 50

Installation
1. Before installing battery, connect all equipment
to be operated. See typical wiring diagram,
Fig. 42.
2. Place battery in holder with a flat base. Tighten
hold downs evenly until snug. DO NOT over-
tighten.
3. Connect POSITIVE terminal to POSITIVE (+)
battery post first to prevent sparks due
to accidental grounding. Tighten connectors
securely.
4. Connect NEGATIVE terminal to NEGATIVE (–)
battery post. Tighten connectors securely.
ANTI-AFTERFIRE
ALTERNATOR
SOLENOID
AC
OUTPUT
WIRES
DC OUTPUT
WIRE
REGULATOR
RECTIFIER
HEAD
LIGHT
BATTERY
SWITCH
TERMINAL
-
12 VOLT
HEAD
BATTERY
LIGHTS
Fig. 42
Test Battery
1. Physical check – clean if necessary.
a. Corrosion
b. Dirt
c. Terminal and clamps (secure-good condition)
2. Bring battery to full charge.
CAUTION: DO NOT exceed a charge rate of
1/10 ampere for every ampere of battery
rating!
Consult battery manufacturer for charging
recommendations.
Overcharging may cause battery failure.
a. Use a taper charger (automatically reduces
charge rate).
STOP
SWITCH
KEY SWITCH
2 3
4
1
5
6
SOLENOID TAB
TERMINAL
STARTER
TERMINAL
SOLENOID
+
STARTER
MOTOR
b. Fill battery cells with distilled water after
charging (for batteries that have been in
service).
NOTE: If battery gets HOT to the touch, or is spitting
acid (gassing) excessively, unplug charger
periodically.
3. Use Digital Multimeter #19464. Set meter to
read DC Volts.
4. Attach RED meter test clip to POSITIVE (+)
battery terminal.
5. Attach BLACK meter test lead to NEGATIVE (-)
battery terminal.
6. With ignition switch OFF, press starter button. If
ignition and starter are run off the same switch,
disconnect wires from spark plugs and ground
the ignition using two Ignition Testers #19368.
7. Turn switch to START. Meter should display 9
volts or more when cranking engine. If less than
9 volts, replace battery.
8. With battery fully charged, check specific gravity
readings of each cell (2) with a hydrometer (1) and
record readings, Fig. 43. All readings should be
above 1.250 (compensating for temperature). If
specific gravity readings vary .50 or if all cells read
less than 1.225, replace battery.

‚
Fig. 43
Charge Indicator Test
• SYMPTOM: Charge Indicator Light Will Not Light
– Key Switch ON – Engine Not Running
To identify whether the problem is related to the
regulator/rectifier or the charging indicator wiring
system, the test procedure must be followed in the
sequence listed.
A known good battery is required for this test.
NOTE: Verify alternator and regulator/rectifier out-
put before testing the charging indicator
system.
Output values are the same as the 10 amp
and 16 amp system.
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