BATTERY INSPECTION BATTERY
JUMP
STARTING
Check battery cells with a hydrometer. The specific
gravity reading should be approximately
1.260
at
77"
F
(25OC),
Figure 32.
Occasionally, it may be necessary to jump start a
weak battery using a charged booster battery to start
your engine. If jumpstarting is necessary, the follow-
ing procedure is recommended in order to prevent
starter damage, battery damage and personal injuries.
RAVITY READING
260
AT
77
F
(25
C)
FIGURE
32.
SPECIFIC GRAVITY
TEST
6
Do not engage starter for periods
longer than
30
seconds without
allowing
5
minutes for starter
to
cool. Starter failure
may result if these guidelines are not followed.
.
1.
Disconnect engine load.
2.
Use only a battery of the same voltage
(12V)
as is
used with your engine.
3.
Attach one end
of
the positive booster cable (red)
to the positive
(+)
terminal of the booster battery.
Attach the other end of the positive cable to the
positive
(+)
terminal
of
your engine battery.
4.
Attach one end of the negative
(-)
booster cable
(black) to negative (-)terminal of booster battery.
Attach other end of negative cable to a solid
chassis ground on your engine.
Arcing may cause severe per-
-
sonal injury.
Do
not allow the
If
one or more cells are low on water, add distilled
water and recharge. Keep the battery case clean and
dry. An accumulation of moisture will lead to a more
rapid discharge and battery failure.
positive and negative cableends
to
touch each
other because it will short the battery causing
arcing.
I
Keep the battery terminals clean and tight. Push the
cable terminal down flush with or slightly below the
top
of
the battery post (Figure33). After making con-
nections, coat the terminals with a light application of
petroleum jelly or grease to retard corrosion.
r
BATTERY POST
CABLE TERMINAL
b
FIGURE
33.
BAlTERY
CABLE
CONNECTION
Poor contact at the battery cable connections is often a
source of trouble. Make sure battery cables are in good
condition and that contacting surfaces are clean and
tightly connected.
Do
not reverse battery leads. Use
recommended battery tools when disconnecting leads
to avoid physical damage to battery.
5.
Jump starting in any other manner may result in
damage to the battery or the electrical system.
6.
Turn ignition switch to
ON
to start engine.
Jump starting a frozen battery
can explode and can cause
severe personal injury. Never jump start a frozen
battery.
To
do
so
may cause the battery
to
explode. Never expose the battery
to
an open
flame or an electrical spark because a battery
discharges highly explosive hydrogen gas.
FLYWHEEL ALTERNATOR
The flywheel alternator is a permanent magnet alter-
nator and uses asolid-state voltage regulator-rectifier
for controlling output.
Three different alternator systems are used with
NHC
and NHCV engines;
20
amp Synchro system,
15
amp
Phelon system,
20
amp Phelon system.
Weak ignition spark ora discharged battery indicates
trouble in the charging system. But before testing
engine charging system, always check the battery for
serviceability.
AWARN~NG
Do
not smoke while servicing bafter-
m
ies.
Explosive gases are emitted from
batteries while charging. Ignition of these gases can
cause severe personal injury.
This engine uses a
12
volt, negative
ground system. Alternator must
be
connected
to
battery at all times when engine
is
run-
ning.
Do
not
reverse batfery cables.
30
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