Monarch SE 2004----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Section 3 Exterior & Interior | 103
The most common cause of corrosion to the motorhome is the accumulation of
road salts, grime and dirt. These elements, combined with moisture, may possibly
cause early component failure. Salt air and fog from coastal trips can greatly
accelerate the corrosion process. Corrosive materials collected from roadways
accumulate on the undercarriage, around wheel openings and on the radiator
charge air cooler package. These areas need to be cleaned periodically to help
prevent component failure due to corrosion. If the motorhome is driven in areas
where road salts are used it should be washed at least once a week. Otherwise, it is
recommended to hose off the undercarriage area at least once a month to help
minimize the corrosion process. High pressure washers or steam cleaners are the
most effective way of cleaning off the underside and inside wheel openings. Avoid
directly spraying the painted surface with a high pressure washer. Remove
road debris and mud that has accumulated. Material left behind can intensify the
corrosion problem.
CAUTION: Damage can result when using a high pressure
washer or steam cleaner. Nozzle discharge pressure can exceed
1,800 psi. Avoid using high pressure steam cleaners on the
exterior paint surfaces. Remove all spattered washing debris
from the exterior paint surfaces as soon as possible.
The life of the exterior paint finish can be extended if properly cared for.
Periodic cleaning will help preserve the paint finish. The motorhome is painted
with a “base coat, clear coat system.” The clear coat is a polyurethane based
material which brings out the shine or luster to the base coat paint. Care should be
used when washing the motorhome. Use only mild detergents or preferred
specifically designed automotive detergents. Avoid using abrasive cleansers or
laundry detergents as they will scratch the clear coat and leave a soap film. The
use of specially designed automotive washing utensils, such as soft bristle brushes,
are acceptable as long as they do not trap abrasive material and scratch the surface
while being used. Before washing the motorhome remove most of the accumulated
dirt and “road wash” behind wheel openings, below the windshield and on the rear
of the motorhome. If the build up is excessive, run water over a soft brush while
gently scrubbing the surface in one direction. This will help float away the “build-up”
from the clear coat. Avoid back and forth or circular motions as this may act like
sandpaper, scratching the clear coat and leaving a haze or “swirl marks.” After
removing the heavy build-up, use the mixed detergent solution to wash the
motorhome. Start washing at the top of the motorhome working towards the
bottom. If possible, wash the motorhome in a shaded area when the exterior is not
hot to the touch. If necessary, turn the motorhome around to keep the area being
washed in the shade. Try not to allow the detergent to dry onto the clear coat
surface. Use plenty of water when rinsing the surface to remove any detergent
residue.
Washing
EXTERIOR CARE
Corrosion
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