MacDon M155 Operators Manual - Manual (Page 343)

MAINTENANCE AND SERVICING
Preventing Electrical System Damage
To prevent electrical system damage, take the following
precautions:
• Carefully observe polarity when attaching
booster battery.
• Do NOT short across battery or alternator terminals,
or allow battery positive (+) cable or alternator wire to
become grounded.
• Be sure alternator connections are correct before cables
are connected to battery.
• When welding on any part of the machine, disconnect
battery cables and alternator wire. Refer to Welding
Precaution .
• Always disconnect battery ground cable when working
with the alternator or regulator.
• Never attempt to polarize alternator or regulator.
• If wires are disconnected from the alternator, use the
illustration to ensure proper reconnection.
• Never ground the alternator field terminal or field.
• Never connect or disconnect alternator or regulator
wires with battery connected or alternator operating.
• Always disconnect cables from the battery when using
a charger to charge battery in windrower.
• Ensure all cables are securely connected before
operating engine.
Figure 5.126: Alternator
A - Negative Terminal B - Positive Terminal
Maintaining the Battery
CAUTION
Do NOT attempt to service battery unless you have the proper equipment and experience to perform the
job. Have it done by a qualified Dealer.
• Check battery charge once a year, and more often if operating in cold weather. Hydrometer readings should be
1.260 to 1.300. Readings below 1.250 indicate charging is required. Refer to Charging the Battery, page 329 .
Add electrolyte if necessary. Refer to Adding Electrolyte to the Battery, page 331 .
• Keep batteries clean by wiping with a damp cloth.
• Keep all connections clean and tight. Remove any corrosion, and wash terminals with a solution of baking soda
and water. A light coating of grease on terminals (after cables are attached) will reduce corrosion.
• To prolong battery life, store batteries fully charged and at +20° to +80°F (-7° to +26°C). Check voltage after
storage, and recharge as needed, according to battery and charger manufacturer recommendations.
• Do NOT stack storage batteries on top of each other.
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