Battery Charging Rates; Negative Jumper Cable Connection - Pontiac TRANS AM 1977 Service Manual

ENGINE ELECTRICAL 6D-11
(
BATTERY
I
SLOW CHARGING
I
FAST CHARGING
I
Fig.
6D-13
Battery Charging Rates
Y85-4, Y85A-4
R85-5, R85A-5,
Y87P
R87-5, R89-5,
R87P. R89SP
z
positwe battery terminal (or metal in contact with it) and any
other metal on the car, because a short circuit could occur.
Batteries should always be kept out of the reach of children.
1. Set parking brake and place automatic transmission
in "PARK" (neutral for manual transmission.) Turn off
lights, heater, and other electrical loads.
2. Check the battery to insure that it is in proper
condition to allow safe starting. If it is not, do not attempt
jump starting.
a. If the battery is a sealed battery, check the test
indicator. If it is light (all clear), replace the battery, and do
not attempt to jump s t a r t .
b. If the battery has vent caps, check the water level. If
the water level is below the proper level, add clear drinking
water up to the split rings. If water is not available, remove
the caps and place a cloth across the holes. After starting,
dispose of the cloth and replace the caps.
3. Only 12 volt batteries can be used to start this engine.
4. Attach the end of one jumper cable to the positive
terminal of the booster battery and the other end of the same
cable to the positive terminal of the discharged battery. DO
NOT PERMIT vehicles to touch each other as this could
cause a ground connection and counteract the benefits of this
procedure.
5. Attach one end of the remaining negative cable to the
negative terminal of the booster battery, and the other end
to a solid engine ground (such as A/C compresser or
generator mounting bracket) at least 12 inches from the
battery of the vehicle being started (see Fig. 6D-14) (DO
NOT CONNECT DIRECTLY TO THE NEGATIVE
POST OF THE DEAD BATTERY).
6. Start the engine of the vehicle that is providing the
jump start and turn off electrical accessories. Then start the
engine in the car with the discharged battery.
7. Reverse these directions exactly when removing the
jumper cables. The negative cable must be disconnected from
the engine that was jump started
first.
Remove and Replace
31 03
Fig. 6D-14 Negative Jumper Cable Connection
5 AMPS
1 0 HOURS
15 HOURS
To remove or replace a battery, always disconnect the
negative cable first then the positive cable. Remove as shown
in Fig. 6D-15. Torque battery cables to 105 in.-lb.
1 0 AMPS
5 HOURS
7-112 HOURS
When handling a battery, the following safety
precautions should be observed:
1. Hydrogen gas is produced by the battery. A flame or
spark near the battery may cause the gas to ignite.
2. Battery fluid is highly acidic. Avoid spilling on
clothing or other fabric. Any spilled electrolyte should be
flushed with large quantities of water and cleaned
immediately.
2 0 AMPS
2-112 HOURS
3-314 HOURS
3 0 AMPS
1-213 HOURS
2-112 HOURS
40 AMPS
2 HOURS
5 0 AMPS
1-112 HOURS