8-18
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Electrical system
Battery - Inspect
Battery electrolyte level - Inspect
Battery electrolyte evaporates during use and the fluid
level gradually decreases. The correct fluid surface
level is between the LOWER LEVEL and UPPER
LEVEL lines.
For the battery without level lines, the correct fluid sur-
face level is about 10 to 15 mm [0.394 to 0.591 in.]
above the top of the plates.
If the fluid level is low, remove the caps and add dis-
tilled water to the proper level.
Note: When adding distilled water, pour in carefully.
Fig. 8-29 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. 8-30 Specific gravity of battery electrolyte - Check
If battery electrolyte is spilled on your skin, flush immediately with plenty of water. If battery electrolyte enters the
eyes, flush them immediately with lots of fresh water and seek medical attention at once.
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.
10 to 15 mm
[0.394 to 0.591 in.]
Proper
level
UPPER LEVEL
LOWER LEVEL
Table 8-3 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
ELECTRO-
LYTE
GLASS TUBE
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