Mec Speed Level 2684 RT Service And Parts Manual page 58

B
A T T E R Y
Check battery and surrounding area for signs of damage or corrosion.
Check battery terminals for:
• Corrosion: Regularly clean connections and apply a nonmetallic grease or protective spray to
retard corrosion.
• Loose connections: Be sure all cable connections are tightly secured, and that good contact is
made with terminals.
• Broken or frayed cables: Be sure all connections are good and that no loose or broken wires
are exposed. Replace as necessary.
Check battery electrolyte level. Replenish the electrolyte, if necessary. Remove vent
caps before filling, and USE ONLY DISTILLED WATER. DO NOT OVERFILL. Fill to
level indicator (or ½ inch over the top of separators, if there is no level indicator). Fill
after charging to prevent overflow of acid due to expansion. Do not use a hose to add
water to batteries.
Allowing the electrolyte level to drop below the top of the separators will lead to
shortened battery life.
Excessive water usage can indicate that a battery has been overcharged, has been
subjected to excessively high temperatures, or is nearing the end of its service life.
B
ATTERY
Every 15 hours (after battery has been charged), spot-check the specific gravity of two
or more cells. A fully charged battery should indicate 1.28 specific gravity. If low
readings are noted, check the following:
• Check terminals for corrosion, loose connections and broken or frayed cables.
• Check all cells with a hydrometer for variance in specific gravity. A variation of 0.03 points or
more between cells is a cause for concern. Mark the low cells.
Recheck specific gravity of all cells after recharging. Wash the top of the battery,
making sure all vents are in place. Do not allow cleaning water or other foreign matter
to enter the cells. Use a solution of bicarbonate soda (5 tsp. of baking soda per quart of
warm water) and water to wash the battery if there is an accumulation of acid.
Table 2-2: Battery Specific Gravity and Voltage
Specific Gravity
Fully Charged
Fully Discharged
November 2009
Page 2-6
M
A I N T E N A N C E
P M
REVENTATIVE AINTENANCE
Each Cell Per Cell
1.280 2.10
1.130 1.75
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
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I N U S E
:
Volts DC
6V Battery
6.30
5.19
B
A T T E R I E S
12V Battery
12.60
10.50