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BATTERY TROUBLESHOOTING
Condition of Battery Cause Countermeasures Cause
Starter does not function - Key is not "ON".
- Battery is over-used until
light becomes dim.
- Defective alternator or
rectifier preventing
charging of the battery.
- Dirty or corroded terminal
contacts.
- Bad brushes, armature or
field in alternator.
- Life of battery expired.
-Turn key "ON"
- Charge for a long period
at the normal charging
rate until specific gravity
of 1.26 is reached.
- Repair alternator and
replace defective rectifier,
and fully charge the
battery.
- Wash terminal with hot
water and tighten well.
- Replace.
- Replace battery.
- Do not overuse the
battery and charge before
being fully discharged.
- Check alternator/rectifier.
- Keep terminals clean and
well tightened. Coat
terminals with grease to
prevent corrosion.
Low electrolyte level - Battery used with
shortage of electrolyte.
- Battery over-used.
Charging was neglected.
(Refrain from over-
discharging)
- Defective alternator/
rectifier, defective
terminal contacts causing
corrosion of electrodes.
- Add distilled water and
charge battery.
- Charge for a long period
at the normal charging
rate.
- Check alternator and
rectifier, and charge for a
long period at the normal
charging rate.
- Make routine checks of
electrolyte.
- Do not overuse the
battery and charge before
being fully discharged.
- Make routine checks of
terminals to make sure
they are clean and tight
Battery cannot be charged - The current of the
alternator during
operation is too high,
causing plates to drop,
warp, or short circuit.
- Lift of battery expired
- Decrease the charging
current of alternator.
- Replaced damaged
battery.
- Exchange battery.
- Check charging current at
alternator.
Corrosion of terminals is
severe
- Current of the alternator
during operation is too
high.
- Clean corrosion from
terminals and tighten well.
- Adjust charging current of
alternator.
- Keep terminals clean and
well tightened.
- Apply a coat of grease to
terminals to prevent
corrosion.
- Check charging current of
alternator.
Electrolyte decreases
rapidly
- Over heating due to over
charging.
- Battery cracked or has
small holes.
- Check charging output.
- Replace battery.
- Secure battery in tractor
so it cannot move.