Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURE
4-67
2. If the electrolyte level is below the midway point between
the UPPER LEVEL (U.L.) and LOWER LEVEL (L.L.) lines,
remove cap (2) and add purified water (e.g. commercially
available replenishment water for a battery) to the U.L. line.
3. After adding distilled water, tighten cap (2) securely.
REMARK
If distilled water is added to above the UPPER LEVEL (U.L.)
line, use a syringe to lower the level to the UPPER LEVEL
(U.L.) line. Neutralize the removed fluid with baking soda
(sodium bicarbonate), then flush it away with a large amount of
water or consult your Komatsu distributor or battery maker.
When it is Impossible to Check Electrolyte Level from Side of Battery
If it is impossible to check the electrolyte level from the side of the battery, or there is no display of the UPPER
LEVEL line on the side of the battery, check as follows.
1. Remove cap (2) at the top of the battery, look through the
water filler port (3), and check the electrolyte surface. If the
electrolyte does not reach the sleeve (4), add purified
water (e.g. commercially available replenishment water for
a battery) so that the level reaches the bottom of the sleeve
(UPPER LEVEL line) without fail.
q
(A) Suitable level: Electrolyte level is up to bottom of
sleeve, so surface tension causes electrolyte surface
to bulge and poles appear bent.
q
(B) Low: Electrolyte level is not up to bottom of sleeve,
so poles appear straight and not bent.
2. After adding distilled water, tighten cap (2) securely.
REMARK
If water is added to above the bottom tip of the sleeve, use a
pipette to remove electrolyte. Neutralize the removed electro-
lyte with sodium bicarbonate, then flush it away with a large
amount of water. If necessary, contact your Komatsu distribu-
tor or your battery maker.
When it is Possible to Use Indicator to Check Electrolyte Level
If it is possible to use an indicator to check the electrolyte level, follow the instructions given.