Page 21
Mast Seres - Servce & Parts Manual
May 2021
Secton 10 - Mantenance
Quarterly Inspections
Inspections that are to be performed every 3 months or every 250 hours.
1 - Inspect the Batteries
Tools will be required to perform this procedure.
New parts will be required to perform this procedure.
This procedure is to be performed every 3 months or every 250 hours, whichever comes first.
Proper battery condition is essential to good machine performance and operational safety. Improper
fluid levels or damaged cables and connections can result in component damage and hazardous
conditions.
Electrocution / burn hazard����� Contact with electrically charged circuits
could result in death or serious injury����� Remove all rings, watches and
other jewelry�����
Bodily injury hazard����� Batteries contain acid����� Avoid spilling or contacting
battery acid����� Neutralize battery acid spills with baking soda and water�����
Put on protective clothing and eye wear.
Be sure that the battery cable connections are free of corrosion.
Note:
Adding terminal protectors and a corrosion preventative sealant will help eliminate corrosion on
the battery terminals and cables.
Be sure that the battery retainers and cable connections are tight.
Fully charge the batteries. Allow the batteries to rest 24 hours before performing this procedure
to allow the battery cells to equalize.
Models are equipped with maintenance free batteries. If models have maintenance free batteries then
proceed to step 12.
Models without maintenance-free or sealed batteries:
Remove the battery vent caps and check the specific gravity of each battery cell with a
hydrometer. Note the results.
Check the ambient air temperature and adjust the specific gravity reading for each cell as
follows:
Add 0.004 to the reading of each cell for every 5.5° C above 26.7° C.
Subtract 0.004 from the reading of each cell for every 5.5° C below 26.7° C.
Result:
All battery cells display an adjusted specific gravity of 1.277 or higher. The battery is
fully charged. Proceed to step 10.
Result:
One or more battery cells display a specific gravity of 1.217 or below. Proceed to
step 7.
Perform an equalizing charge OR fully charge the batteries and allow the batteries to rest at
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