10-8
CLASS C MOTORHOME
10.3.3 12 VOLT COACH FUSES
All 12-volt circuits are protected by either a circuit
breaker or a fuse in the control panel. When a
breaker trips or a fuse blows, shut off all appli-
ances or lights on the affected circuit and reset the
breaker or replace the fuse with a new one of the
same amperage. The label on the panel identifies
both the fuse amperage and the applicable circuit.
The fuse panel is located next to the circuit-
breaker panel, below the dinette.
Fig. 10-10 FUSE PANEL
Fig. 10-11 FUSES
Blown
Good
10.3.4 BATTERY MAINTENANCE
Automotive batteries are reservoirs of 12-volt
electrical energy. Whenever energy is removed
from the battery it has to be replaced in order for the
battery to continue functioning. This energy is
restored by the engine alternator whenever the
engine is running or by the RV charging system
when plugged into a 120-volt power source.
1. Problems:
Two conditions can destroy the function of a
battery. One is called sulphating in which a
layer of sulphate crystals collects on the lead
plates inside the battery. This can happen
when a battery is not used for a long period of
time (30 days or more) especially during warm
weather. This situation requires replacement of
the battery. The second is freezing. A battery
must be kept at almost full charge to prevent
the liquid electrolyte inside the battery from
freezing.
2. Prevention:
a. Disconnect the battery cables during long
periods of storage.
b. Hook up a battery charger at least once a
month during long periods of storage.
3. Long Term Storage:
If you do not intend to use your motorhome for
a longer period of time it might be a good idea
to remove the batteries from the motorhome
and store them in a cool dry location on a wood
or rubber pad. DO NOT store batteries on a
moist concrete floor.
Do not allow battery electrolyte to contact skin,
eyes, fabrics, or painted surfaces. The electro-
lyte is a sulphuric acid solution which could cause
serious personal injury or property damage.
Wear eye protection when working with batteries.
WARNING
4. Additional maintenance suggestions:
a. Check the external condition of the battery
monthly. Look for cracks in the cover and
case.
b. Make sure batteries are always securely
fastened down.
c. Make sure battery clamps are tight and free
of corrosion.
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