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DANGER
Jump starting a weak battery that is
cracked, frozen, has low electrolyte level,
or an open/shorted battery cell, can
cause an explosion resulting in serious
personal injury.
Do Not jump start a weak battery if these
conditions exist.
2.
Make sure the booster is a good and fully
charged lead acid battery at 12.6 volts or
greater. Use properly sized jumper cables (4 to 6
AWG) with short lengths to reduce voltage drop
between systems. Make sure the cables are
color coded or labeled for the correct polarity.
CAUTION
Connecting the jumper cables incorrectly
(wrong polarity) can immediately damage
the electrical system.
Be certain of battery terminal polarity
and jumper cable polarity when hooking
up batteries.
Note:
The following instructions are adapted
from the SAE J1494 Rev. Dec. 2001 –
Battery Booster Cables – Surface Vehicle
Recommended Practice (SAE – Society of
Automotive Engineers).
WARNING
Batteries contain acid and produce
explosive gases.
• Shield the eyes and face from the
batteries at all times.
• Do Not lean over the batteries.
Note:
Be sure the vent caps are tight and level.
Place a damp cloth, if available, over any vent
caps on both batteries. Be sure the vehicles do
not touch and that both electrical systems are off
and at the same rated system voltage. These
instructions are for negative ground systems
only.
3.
Connect the positive (+) cable to the positive (+)
terminal of the discharged battery that is wired
to the starter or solenoid as shown in
1. Positive (+) cable on discharged battery
2. Positive (+) cable on booster battery
3. Negative (–) cable on the booster battery
4. Negative (–) cable on the engine block
5. Booster battery
6. Discharged battery
7. Engine block
4.
Connect the other end of the positive cable to
the positive terminal of the booster battery.
5.
Connect the black negative (–) cable to the other
terminal (negative) of the booster battery.
6.
MAKE THE FINAL CONNECTION ON THE
ENGINE BLOCK OF THE STALLED VEHICLE
(NOT TO THE NEGATIVE POST) AWAY FROM
THE BATTERY. STAND BACK.
7.
Start the vehicle and remove the cables in the
reverse order of connection (the engine block
(black) connection is the first to disconnect).
Figure
42.
48
Figure 42
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