Baroness LM331, Service Manual, Page: 99 / 165

Caution
If the electrolyte overflows from the battery,
wipe it with a wet cloth.
Failure to do so could cause damage to the
instruments.
When cleaning the battery, do not use organic
solvents such as benzene, thinner or gasoline
and refrain from using cleaner, or chemical
cloth.
Doing so could damage the battery case,
resulting in electrolyte leaks.
Do not add anything but distilled water to the
battery.
Adding anything other than distilled water
could cause the battery to become extremely
hot or generate toxic gases due to impurities.
Do not add sulfuric acid to the battery.
Doing so could cause the specific gravity of
the electrolyte to exceed the specified value,
causing the battery life to be shortened.
After adding distilled water to the battery,
firmly tighten the vent plug.
When inspecting the battery, inspect the
following items:
Visual inspection
Visually inspect the battery case for cracks,
chips and deformation, and check that
there are no electrolyte leaks.
If any of the above are found, investigate
what has caused them and replace the
battery.
Cleaning of the exterior
When cleaning the battery, use cloth that
has been dampened with water.
Inspect the vent plug or vent hole on the
side.
If the plug or hole is clogged with mud etc.,
wash it with water.
A clogged vent hole could cause the
internal pressure to increase due to gases
generated inside the battery, causing the
battery to burst.
Inspection of the mounting bracket
Ensure that the battery is firmly secured by
the mounting bracket. 1.
2.
3.
If it is not, tighten the nuts securing the
battery until it is firmly secured.
If the battery is not firmly secured by the
mounting bracket, the battery could move
due to vibration while the machine is
moving, resulting in damage to the battery
case or electrolyte leaks.
Inspection of the cable terminals for
looseness
If a connection between a battery terminal
and machine-side cable terminal is loose,
tighten the nut securing the cable terminal
until it is firmly secured.
Loose connections could result in an
insufficiently charged battery, damaged
terminals, or explosion.
Note:
If a terminal has corroded, polish it using a
wire brush or fine sandpaper, and apply a
small amount of anti-rust grease.
Inspection of the electrolyte level and
addition of distilled water
Important
When adding distilled water, be careful not to
add an excessive amount.
Check the electrolyte level by looking from
the side of the battery.
If the electrolyte level has fallen to less than
halfway between the
“
UPPER
”
(maximum
level line) and
“
LOWER
”
(minimum level
line) limits, add distilled water to the battery
immediately until the
“
UPPER
”
limit is
reached.
When adding distilled water, loosen and
remove the vent plug and add distilled
water up to the
“
UPPER
”
(maximum level
line) limit.
After adding distilled water, firmly tighten
the vent plug.
U P P E R L E V E L
L O W E R L E V E L
1
2
48yhlu-006
Inspection of the battery_001
4.
5.
Electrical system
LM331
Electrical system
Page 5-25
General inspection and repair