8-23
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Electrical System
Battery - Check
Note: If the specification of battery differs from the contents of this operation manual, follow the manufacturer's op-
eration manual.
Battery Electrolyte Level - Inspect
Battery electrolyte evaporates during use and the
electrolyte level gradually decreases. The proper elec-
trolyte surface level is between the LOWER LEVEL
and UPPER LEVEL lines.
For the battery without level lines, the proper electro-
lyte surface level is about 10 to 15 mm [0.39 to 0.59
in.] above the top of the plates.
If the electrolyte level is low, remove the caps and add
distilled water to the proper level.
Note: When adding distilled water, add little by little.
Fig. 8-30 Battery Electrolyte Level - Inspect
Specific Gravity of Battery Electrolyte - Check
If the specific gravity measured at 20°C [68°F] is lower
than 1.22, then charge the electrolyte.
Fig. 8-31 Specific Gravity of Battery Electrolyte -
Check
If battery electrolyte is spilled on your skin or clothes, flush immediately with plenty of water. If battery electrolyte
get into your eyes, flush them immediately with plenty of water and then get medical attention.
Do not use open flames or other fire hazards near the battery. When handling the battery, be careful of sparks gen-
erated by accidental shorting.
UPPER LEVEL
LOWER LEVEL
10 to 15 mm
[0.39 to 0.59 in.]
Proper
Table 8-4 Specific gravity of electrolyte
Specific gravity
at 20 °C [68 °F]
Condition
Remedy
From 1.26 to 1.28
Fully charged
-
From 1.22 to 1.26
Charged
Charge
Less than 1.22
Discharged
Charge
Float
Electrolyte
surface
Electrolyte
Glass tube
