HEXA

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GENERAL
10
2.8 JUMP STARTING
A jump start or boost is a term for a method of
starting a vehicle which has a ‘dead’
A second battery (often in another vehicle) is
temporarily connected to the dead battery, to provide
the initial charge required to start the engine. Once
the engine is running, it will recharge the dead bat-
tery, so the second battery can be detached.
However, if the engine stops running too soon, the
battery may not have built up enough charge to re-
start the engine, so a further jump start may be
required.
Most vehicles use a 12-volt which provides
power to a starting or the When the
engine is running, electrical power from it
restores the charge to the battery in preparation for
the next start. When a battery is discharged, such as
by accidentally leaving the switched on
when parked, the vehicle’s engine will not
"start/crank" when the ignition key is turned.
!! WARNING
Do not allow battery electrolyte to come in contact
with eyes, skin, fabrics or painted surfaces. The fluid
contains sulphuric acid which can cause injury and
severe damage. Wear rubber gloves, to avoid risk of
contacts.
INSTRUCTIONS
1. Make sure that battery providing jump start has
the same voltage as the battery in the vehicle
(12V). The voltage and capacity are given in the
battery.
2. Pull a vehicle with a charged battery next to the
vehicle with the dead battery, situating the two
batteries as close together as possible without al-
lowing the two vehicles to touch.
3. Keep the engine with good battery off and all
connection turned off. Similarly switch off all elec-
trical accessories of the vehicle with dead battery.
4. The connection of –ve lead point should be kept
as far as possible away from the discharged bat-
tery and close to the starter motor.
5. Attach a positive jumper cable clamp to the posi-
tive terminal (the one with the plus sign) of the
charged battery.
6. Connect the other red-handled clamp to the posi-
tive terminal of the dead battery.
7. Attach the black/negative cable to the vehicle with
the dead battery; clamp it somewhere where the
current can ground out, such as a bolt or bracket
on the engine. You can also attach it to any met-
al, unpainted part of the vehicle's frame.
8. Ground the other black/negative cable on the
charging vehicle, as described in the previous
step.
NOTE
Care should be taken as there is possibility of spark
to be produced.
9. Attempt to start the vehicle that has the dead bat-
tery should be made at the intervals of one
minute and should not last more than 15 sec.
10.After starting, allow both engines to idle for ap-
proximately 3 minutes with the leads still
connected.
11.Once the dead vehicle is running, remove the
clamps one at a time in reverse order.
12.Allow the jump-started vehicle to run for half an
hour in order to charge the battery. It will charge
whether driving or idling.
!! WARNING
 Avoid connecting of negative terminal battery of
the dead battery directly to the negative terminal
of the good battery as there are chances of bat-
tery explosion.
 The voltage from a vehicle battery is dangerous
whether the engine is running or not. Do not
touch the metal ends of the jumper cables with
your hands, nor touch them to each other. Never
grasp both battery terminals at the same time.
NOTE
 Always check your owner’s manual before jump-
starting a vehicle. Some new vehicles have spe-
cial 'jump-start lugs' where jumper cables are
attached rather than to the battery cables. These
allow the potentially damaging surge of current to
bypass the electrical system (and all those fancy,
new onboard computers).
 If the dead vehicle won't respond, there might be
a problem in another part of the ignition system.
Consult a mechanic.
! CAUTION
Sometimes starting or running the charged vehicle
while jump-starting the dead one can release a pow-
er surge into the charging vehicle and blow a fuse,
damage the alternator, or harm other areas of the
electrical system.