•
Clean the pole studs, the cable terminals and the battery retainer thoroughly.
Wash off oxidised spots with water. Wipe the outside of the battery when it is
clean, and coat the pole studs and the cable terminals with petroleum jelly.
•
Refit the battery.
IMPORTANT: Always connect the positive lead first.
4.8.6.3
Alternator
The tractor has a negative-grounded alternator which can easily be damaged if
incorrect connections are made in the electrical system.
Connection of the battery with wrong polarity can burn out the alternator or
rectifier. The electrical charging circuit must not be broken when the engine is
running.
4.8.6.4
Protecting the electrical system before welding
Before repairing the tractor by arc welding, protect the electrical system from
damaging.
1. Disconnect the battery leads.
Disconnect the negative lead first.
2. Disconnect the alternator wiring.
IMPORTANT: Never run the engine with the alternator disconnected.
3. Remove the engine control unit cover.
4. Disconnect the engine control unit connectors.
Open the connector locking device to disconnect the connectors.
When reconnecting, turn the locking device back to the locking position.
4.8.6.5
Fuses and relays
The electric centre is positioned under the dashboard. The relays related to the
specific fuses are located in the fuse boxes. Other relays are placed outside the
electric centre.
The electric centre must always be kept clean. If a fuse blows, the fault must be
traced and remedied.
IMPORTANT: Fuses must not be replaced with new ones of higher rating as this
may damage the electrical equipment.
Power for extra equipment can also be taken from the spare fuses or unused
extra equipment fuses. A current source can be connected from the main current
pole of the starter motor (the current is then switched off with the main switch)
through the new fuse.
4. Maintenance
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