Nortrac XT20 - Page 47

Operation Description
41
2.16.2.2 Alternator Faults and Troubleshooting
Table 2-12 Motor Faults and Troubleshooting
Sequence
No.
Fault Fault Reasons Troubleshooting
1
The
alternator
doesn’t
work.
(1) Wiring is wrong, broken or not
making good contact.
(2) Rotor circuit broken.
(3) Rectified diode damaged.
(4) Carbon brush is not making proper
contact.
(5) Regulator is damaged.
(1) Check & repair the circuits.
(2) Replace alternator.
(3) Replace alternator.
(4) Replace alternator.
(5) Replace alternator.
2
The
alternator is
not charging
properly.
(1) The drive V-belt is loose.
(2) Bad contact with the carbon brush
and the slide ring contaminated by
oil.
(3) The regulator is damaged.
(4) Not enough electrolytes in the battery
or
it is sulfurized or too old.
(1) Adjust the tension of the drive
V-belt
(2) Replace alternator.
(3) Replace alternator.
(4) Replace battery.
3
The
alternator is
overcharged.
(1) Regulating voltage for the regulator is
too high.
(1) Replace the voltage regulator.
2.16.2. 3 Battery Faults and Troubleshooting
Table 2-13 Battery Faults and Troubleshooting
Sequence
No.
Fault Fault Reasons Troubleshooting
1
Battery
capacity is
low and the
engine is
difficult to
start.
(1)The electrolyte level is too low.
(2) Short circuit between electrode
plates.
(3) Sulphurization of the electrode
plate.
(4) Poor circuit connector contact, or
oxide on pole is too much.
(1) Replace battery.
(2) Replace battery.
(3) Replace battery.
(4) Connect, fasten, deoxidize and coat a
layer of Vaseline on the pole head.
2
Excessive
battery
discharging.
(1) Impurities in the electrolytes.
(2) Short circuit in the exterior wiring
of the battery.
(3) Electrolyte overflows from
battery surface, short circuit
positive/negative poles.
(4) Short circuit is caused by
placement of metal tool or bar
between positive/negative poles.
(5) Active substance on pole breaks
off. The pole short circuit caused
by deposits or by isolation plate
damaged; positive/negative pole
is short circuited by pole wrap.
(1) Replace battery.
(2) Troubleshoot and repair.
(3) Replace battery.
(4) Replace battery.
(5) Replace battery.