10. After starting, allow the engine to return to idle speed. Remove the cable connection at the engine or frame. Then remove the other end of the same cable from the booster battery. 11. Remove the other cable by disconnecting at the discharged battery first and then disconnect the opposite end from the booster battery.
12. Discard the damp cloths that were placed over the battery vent caps.
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The best method of making certain a battery is fully charged, but not over charged, is to measure the specific gravity of a cell once per hour. The battery is fully charged when the cells are gassing freely at low charging rate and less than 0.003 change in specific gravity occurs over a three hour period.
Jump Starting With Auxiliary (Booster) Battery
Jump starting is not recommended. However, if it must be done, follow these directions. Both booster and dis-charged batteries should be treated carefully when using jumper cables. Follow the steps below EXACTLY, being careful not to cause sparks. Refer to Figure 33.

Troubleshooting, Adjustment & Service

BATTERY SERVICE

WARNING

Keep open flames and sparks away from the battery; the gasses coming from it are highly explosive. Ventilate the battery well during charging.

Checking Battery Voltage

A voltmeter can be used to determine condition of battery. When engine is off, the voltmeter shows battery voltage, which should be 12 volts. When engine is running, the voltmeter shows voltage of charging circuit which normally is 13 to 14 volts.

A dead battery or one too weak to start the engine

1.

Both batteries must be of the same voltage.

2.

Position the vehicle with the booster battery

may not mean the battery needs to be replaced.

For example, it may mean that the alternator is not

 

adjacent to the vehicle with the discharged battery

charging the battery properly. If there is any doubt

 

so that booster cables can be connected easily

about the cause of the problem, see your dealer. If

 

to the batteries in both vehicles. Make certain

you need to replace the battery, follow the steps

 

vehicles do not touch each other.

under Cleaning the Battery & Cables in the Regular

3.

Wear safety glasses a d shield eyes and face

Maintenance Section.

 

 

 

 

 

fr m ba er es at all times. Be sure vent caps are

 

 

 

 

Charging a Completely Discharged

 

tight. Place damp cloth over vent caps on both

Battery

 

 

 

batteries.

 

 

for

 

 

 

1. Be aware of all the safety precautions y

u sh uld

4.

Conne t positive (+) cable to positive post of

 

discharged battery (wired to starter or solenoid).

observe during the charging operation. If y u are

 

5.

Connect the other end of same cable to same

unfamiliar with the use of a battery charger and

hydrometer, have the battery serviced by your

 

post marked positive (+) on booster battery.

dealer.

Not

6.

Connect the second cable negative (-) to other

 

 

post of booster battery.

2. Add distilled water sufficient to cover the

late (fill

 

to the proper level near the end of the charge).

7.

Make final connection on engine block of stalled

If the battery is extremely cold, allow it to warm

 

vehicle away from battery. Do not lean over

before adding water because the wat r l

v l will

 

batteries.

rise as it warms. Also, an extremely cold batt ry

8.

Start the engine of the vehicle with the booster

will not accept a normal charge until it becomes

 

battery. Wait a few minutes, then attempt to start

warm.

 

 

 

 

 

 

the engine of the vehicle with the discharged

 

 

 

 

 

Reproduction

3. Always unplug or turn the charger off before

 

battery.

attaching or removing the clamp connections.

9.

If the vehicle does not start after cranking for thirty

4. Carefully attach the clamps to the battery in

 

seconds, STOP PROCEDURE. More than thirty

proper polarity (usually red to [+] positive and

 

seconds seldom starts the engine unless some

black to [-] negative).

 

 

 

mechanical adjustment is made.

5. While charging, periodically measure the temperature of the electrolyte. If the temperature exceeds 125° F (51.6° C), or if violent gassing or spewing of electrolyte occurs, the charging rate must be reduced or temporarily halted to prevent battery damage.

6. Charge the battery until fully charged (until the specific gravity of the electrolyte is 1.250 or higher and the electrolyte temperature is at least 60° F).

38