New Holland TC21D, Operator'S Manual

Page: 71 / 102

SECTION 3 - LUBRICATION AND MAINTENANCE
3-20
BATTERY
The tractor is equipped with a BCI group 45, 12-volt
battery with a minimum cold cranking ability of 325
amps at -18
°
C (0
°
F).
Make sure the battery connections are tight and free
of corrosion. A solution of baking soda and water may
be used to wash the outside surface and terminals of
the battery when necessary. However, make sure the
solution does not get inside the battery. After
cleaning, wash the battery with clean water, then
apply a small amount of petroleum jelly to the
terminals to prevent corrosion.
In freezing temperatures, a good battery charge
must be maintained. If the battery becomes
discharged or run down, the electrolyte becomes
weak and may freeze, causing damage to the case.
If you must add water, use distilled water. Add the
water just before using the tractor so that the water
will mix with the electrolyte during the charging
process, thus preventing the water from freezing.
To determine the battery charge, check the specific
gravity of the electrolyte.
Checking the Electrolyte Level
NOTE: Check the battery electrolyte level after every
50 hours of operation.
WARNING
Always check the electrolyte level with the
tractor engine off, as an explosive gas is
produced inside the battery when the alternator
is charging. Do not use an exposed flame and do
not smoke when checking the battery electrolyte
level.
To check the battery electrolyte level:
1. Clean the top of the battery, then remove the vent
plugs.
2. Add distilled water if the electrolyte level is low.
The level is correct when the liquid is 6.35 mm
(1/4
″
) above the plates.
NOTE: Keep distilled water in a nonmetallic
container that is clean and well-covered.
50022453
31
NOT FOR REPRODUCTION