Simplicity AGCO Allis 2000 Series, Service & Repair Manual

Page: 64 / 312

6 Common Service Procedures
Battery Service
6 - 12
CHARGING
1. Be aware of all the safety precautions you should
observe during the charging operation.
2. Add water sufficient to cover the plate (fill to the prop-
er level near the end of the charge). If the battery is
extremely cold, allow it to warm before adding water
because the water level will rise as it warms. Also, an
extremely cold battery will not accept a normal
charge until it becomes warm.
3. Always unplug or turn the charger (A, Figure 21) off
before attaching or removing the clamp connections.
4. Carefully attach the clamps to the battery in proper
polarity, usually black to (-) negative (D) and red to
(+) positive (C).
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 elec-
trolyte occurs, the charging rate must be reduced or
temporarily halted to prevent battery damage.
6. Charge the battery until fully charged (i.e., until the
specific gravity of the electrolyte is 1.250 or higher
and the electrolyte temperature is at least 60° F). 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 3 hour period.
WARNING
When batteries are being charged, hydrogen gas,
which is very explosive and flammable, is
produced. Do not smoke or allow open flames
near a charging or a recently charged battery.
Wear eye protection when near the battery during
charging. Also, make sure the charger is
unplugged before connecting or disconnecting
the battery from the charger.
WARNING
Keep open flames and sparks away from the
battery; the gases coming from it are highly
explosive. Ventilate the battery well during
charging.
WARNING
Do not attempt to charge a frozen battery. Allow
the battery to warm to 60° F (15.5° C) before
placing on charger.
Figure 21. Charging Battery
A. Battery Charger
C. Positive (+) Lead
B. Battery D. Negative (-) Lead
A
B
C
D
Not
for
Reproduction