Electrical System; Battery - New Holland T4.75F Operator's Manual

ELECTRICAL SYSTEM

Battery

WARNING
Explosive gas!
Batteries emit explosive hydrogen gas and other fumes while charging. Ventilate the charging area.
Keep the battery away from sparks, open flames, and other ignition sources. Never charge a frozen
battery.
Failure to comply could result in death or serious injury.
WARNING
Hazardous chemicals!
Battery electrolyte contains sulfuric acid. Contact with skin and eyes could result in severe irritation
and burns. Always wear splash-proof goggles and protective clothing (gloves and aprons). Wash
hands after handling.
Failure to comply could result in death or serious injury.
WARNING
Battery gas can explode!
To prevent an explosion: 1. Always disconnect the negative (-) battery cable first. 2. Always connect
the negative (-) battery cable last. 3. Do not short circuit the battery posts with metal objects. 4. Do
not weld, grind, or smoke near a battery.
Failure to comply could result in death or serious injury.
The tractors are fitted with maintenance-free batteries.
Keep the top part clean and dry. Check that the fluid
level reaches the top mark and never drops under the
bottom mark. If necessary lift covers (1) and add ONLY
distilled water.
Check the charge with a digital voltmeter in the follow-
ing way:
• Connect the voltmeter to the battery's two terminals,
matching the terminal symbols (negative to negative
and positive to positive) and read the value from the
instrument
• Compare the figure with the values in the table below
to establish the charge in the battery.
If the voltage is around 12,30 V, immediately recharge the battery with a current equivalent to 1/10 of the capacity
in Ah (a 50 Ah battery is to be charged to 5 A).
NOTICE: Always disconnect the cables before recharging the battery. The battery should be removed from its seat
and recharged at a safe distance from the tractor.
NOTE: Never use rapid "boost" battery chargers to recharge the battery.
Never fill up the battery with SULPHURIC ACID.
If the battery needs to be topped up frequently or tends to run down, have the electrical system checked by your local
Dealer.
7 - MAINTENANCE
Voltage
12,66 V
12,45 V
12,30 V
12,00 V
7-46
MOIL13TR00689AA
Charge level
100 %
75 %
50 %
25 %
W0005A
W0006A
W0011A
1