Hitachi ZW 310-6, Operator'S Manual

Page: 410 / 506

MAINTENANCE
7-96
Electrolyte Level Check --- every 100 hours (monthly)
1. Check the electrolyte level at least once a month.
2. Park the machine on level ground and stop the engine.
3. Check the electrolyte level.
3.1 When checking the level from the battery side:
Clean around the level check lines with a wet towel.
Do not use a dry towel. Static electricity may be
developed, causing the battery gas to explode. Check
if the electrolyte level is between U.L (Upper Level) and
L.L (Lower Level).
If the electrolyte level is lower than the middle level
between the U.L and L.L, immediately refill with
distilled water or commercial battery fluid.
Be sure to refill with distilled water before recharging
(operating the machine).
After refilling, securely tighten the filler caps.
3.2 When impossible to check the level from the battery
side or no level check mark is indicated on the side:
After removing the filler plug from the top of the
battery. Check the electrolyte level by viewing through
the filler port. It is difficult to judge the accurate
electrolyte level in this case. When the electrolyte
level is at the U.L, the level is judged to be proper.
Referring to the illustrations at the right side, check
the level. When the electrolyte level is lower than the
bottom end of the sleeve, refill with distilled water or
commercial battery fluid up to the bottom end of the
sleeve.
After refilling, securely tighten the filler caps.
Be sure to refill with distilled water before recharging
(operating the machine).
3.3 When an indicator is available to check the level, follow
its check result.
4. Always keep the area around the battery terminals clean
to prevent battery discharge.
Check terminals for loose and/or rust. Coat terminals
with grease or petroleum jelly to prevent corrosion build
up.
Upper Level
U.L (Upper Level)
Lower Level
L.L (Lower Level)
Filler Port
Sleeve
Separator Top
Since the electrolyte surface touches the bottom end of
the sleeve, the electrolyte surface is raised due to surface
tension so that the electrode ends are seen curved.
When the electrolyte surface is lower than the bottom
end of the sleeve, the electrode ends are seen straight.
Specified Electrolyte Level
Lower
M146-07-110
M146-07-109
M146-07-111
M146-07-112
M409-07-072