ELEC. SYSTEM; WARNING
SYSTEM; INFORMATION
SYSTEM; INSTRUMENTS
30 GENERAL
300 Comprehensive info, electrical
system
Electrical system, work instructions
Regarding: L60F, L70F, L90F
Batteries
1 Fully charged and otherwise satisfactory batteries must
always be used when working on the electrical system.
2 Test the batteries with an acid tester. The battery disconnect
switch should be turned off.
3 When installing a battery, make sure that the battery is con‐
nected with the correct polarity.
4 When changing batteries connected in series, make sure they
are of equal capacity, for example, 2 batteries of 105 Ah. The
batteries should have the same age (same quality), since the
charging current required to reach a certain voltage varies with
the battery's age.
5 If booster battery is required when starting, the following
instructions must be followed at all times;
191, Safety when
working with batteries and 191, Starting with booster batter‐
ies.
Charging
1 Before performing any tests of the alternator or regulator, the
batteries must be checked regarding insulation, loose fit, and
corrosion. Check the alternator belts.
2 For all testing of alternating current equipment, use “secure”
connections in order to prevent sparks and voltage transients.
A loose cable may result in destruction of both the alternator
and regulator.
3 Never disconnect the alternator leads while the engine is run‐
ning. This could damage both the alternator and regulator.
4 If the current alternator output socket should be connected to
the chassis, damage may occur to the alternator and regulator.
Components
When removing or installing components in the electrical system,
turn off the voltage supply with the battery disconnector.
5
