Hitachi EX 3600-6, Operator'S Manual

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MAINTENANCE
7-106
Electrolyte Level Check
1. Check the electrolyte level at least once a month.
2. Park the machine on level ground and stop the en-
gine.
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.
Don’t use a dry towel. Static electricity may be de-
veloped, causing the battery gas to explode. Check
if the electrolyte level is between U.L (Upper Level)
and L.L (Lower Level). In case the electrolyte level
is lower than the middle level between the U.L and
L.L, immediately refill distilled water or commercial
battery fluid. Be sure to refill with distilled water be-
fore recharging (operating the machine). After refill-
ing, securely tighten the filler plug.
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 bat-
tery. Check the electrolyte level by viewing through
the filler port. It is difficult to judge the accurate
electrolyte level in this case. Therefore, when the
electrolyte level is flush with the U.L, the level is
judged to be proper. Then, referring to the right il-
lustrations, check the level. When the electrolyte
level is lower than the bottom end of the sleeve, re-
fill with distilled water or commercial battery fluid up
to the bottom end of the sleeve. Be sure to refill with
distilled water before recharging (operating the
machine). After refilling, securely tighten the filler
plug.
3.3 When an indicator is available to check the level,
follow its check result.
4. Always keep 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.
M146-07-109
M146-07-110
M146-07-111
M146-07-112
M409-07-072
When the electrolyte surface is lower than the bottom end
of the sleeve, the electrode ends are seen straight.
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.
Lower Level
Upper Level
Sleeve
Filler Port
Lower
L.L (Lower Level)
U.L (Upper Level)
Separator Top
Proper