New Holland F156.6, Руководство по обслуживанию, Страница: 40 / 41

0 - 32 87726937A Edition 12/2007
REPAIR INSTRUCTIONS F106.6 / F106.6A
SAFETY INSTRUCTIONS F156.6 / F156.6A
4.3 Electrical system
Risk of injury from battery acid and gases.
Wear protective goggles, work gloves and
close-fitting work clothes.
BEFORE WORKING ON THE ELECTRICAL
SYSTEM
Switch off the engine.
Turn the electrical system key switch to the 0 and
take out the key.
Turn the battery main switch to the OFF position and
remove the control lever.
Disconnect the control units and control console
from the on-board electrical system.
Before working on the electrical system, when there
is a possibility of tools, spare parts, etc. touching
electric wires and contacts, disconnect the batteries.
•
Disconnect the negative terminal first, then
the positive.
When work is complete:
•
connect the positive terminal first, then the
negative.
Read and apply the ‘Operating instructions-
Alternator, control units and control console’.
Read and pay attention to the section ‘Inspection
and maintenance - General information’.
Use only measuring instruments for carrying out
voltage tests and continuity checks. Do not use test
lamps.
Do not ‘short to ground’.
The resulting short circuit will cause damage to the
alternator or to the electronics.
ALTERNATOR
Never disconnect the electrical connections at the
alternator, regulator or battery while the engine is
running.
This will damage the alternator and regulator.
When connecting the batteries, do not mix up the
cables (check the polarities).
Use only measuring instruments for carrying out
voltage tests and continuity checks.
Do not use test lamps.
Do not ‘short to ground’.
The resulting short circuit will cause damage to the
alternator and regulator.
When the engine is started, the alternator is
actuated (pre-excited) by an electronic circuit.
This ensures that the alternator is able to deliver
power.
This circuit is part of the main electronic system in
the control console.
A LED (charge indicator) on the control console
indicates whether the alternator is functioning
correctly. This LED must light up when the key
switch is turned to the On position; it should go off
once the engine is running.
If this is not the case, then there is a fault in the
alternator electrical circuit or in the control console.
To prevent further damage, the cause of the fault
must be found and resolved as quickly as possible.
Contact your dealer’s service department.