Assist (Jump) Starting
WITH A BOOSTER BATTERY
If it becomes necessary to use a booster battery, with jumper cables, to start a vehicle's engine because its battery is discharged, the following procedure should be followed:
WARNING: To prevent personal injury or damage to clothing, do not allow battery fluid to contact eyes, skin or fabrics. Do not lean over a battery when connecting jumper cables or allow cable clamps to touch each other. Keep open flames or sparks away from battery vent holes. Always wear eye protection when working with batteries.
CAUTION: Do not apply more than 12 Volts D.C. to battery during the jump start procedure. Voltage above 12 Volts D.C. can damage the trucks electrical system.
Set parking brake and place automatic transmission in "Park" (neutral for manual transmission). Turn off lights, heater and other electrical loads. Observe charge indicator. If indicator is light or yellow replace battery.
CAUTION: Do Not attempt jump starting when indicator is light or yellow. If charge indicator is dark and has a green dot in the center, failure to start is not due to a discharged battery and cranking system should be checked. If charge indicator is dark or red ball appears in center, proceed as follows:
1. Attach one jumper cable to positive terminal of booster battery and the other end of the same cable to positive terminal of the discharged battery.
WARNING: Do not permit vehicles to touch each other as this could establish a ground connection and counteract benefit of this procedure.
2. Connect one end of the other jumper cable to Negative (-) Post of booster battery. Connect the other end of the jumper cable to a good ground on the vehicle with the discharged battery. Make sure a good connection is made, free of dirt and grease.
WARNING: Do not connect the cable to the negative post of the discharge battery.
3. Take care that clamps from one cable do not inadvertently touch clamps from the other cable. Do not lean over the battery when making connection. The negative connection must provide good electrical conductivity and current carrying capacity.
WARNING: During cold weather when temperatures are below freezing point, electrolyte in a discharged battery may freeze. Do not attempt jump starting because the battery could rupture or explode. The battery temperature must be brought up above freezing point before attempting jump start.
4. After engine is started or if engine fails to start, cables must be disconnected in the following order:
a. Disconnect the negative cable at engine ground.
b. Disconnect the negative cable at negative post on booster battery.
c. Disconnect cable between positive post of both batteries.
WARNING: Any procedure other than above could result in:
1. Personal Injury caused by electrolyte squirting out the battery vent,
2. Personal Injury or property damage due to battery explosion,
3. Damage to charging system of booster vehicle or of immobilized vehicle.
WITH PORTABLE STARTING UNIT
There are many types of these units available. Follow Instructions of their manufacturer for necessary precautions and operation.
CAUTION: However, it Is very important that their operating voltage does not exceed 12 Volts D.C. because damage to battery, starter motor, alternator or electrical system may occur.