National Crane 600H, Руководство по обслуживанию

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NATIONAL CRANE
08-19-2022 Control # 092-13
8-11
600H SERVICE MANUAL LUBRICATION
8
Once applied, Carwell T32-CP-90 can appear to leave a
slightly "oily" residue on painted surfaces and until the red
tinting fades could initially be mistaken for a hydraulic oil
leak. While the product is not harmful to painted surfaces,
glass, plastic or rubber, it must be removed using standard
steam-cleaning techniques.
Carwell works in various ways: (1) it eliminates the moisture
containing salt, dirt and other pollutants by lifting and
removing them from the metal surface; (2) the film creates a
barrier to repel further moisture from coming in contact with
the metal; and (3) it penetrates crevices.
In addition to the factory-applied Carwell coating, National
Crane owners must provide proper maintenance and care to
help ensure long-term protection of their crane against
corrosion. This procedure provides information and
guidelines to help maintain the paint finish on National
Cranes.
The most common causes of corrosion include the following:
• Road salts, chemicals, dirt, and moisture trapped in the
hard-to-reach areas;
• Chipping or wear of paint, caused by minor incidents or
moving components;
• Damage caused by personal abuse, such as using the
decks to transport rigging gear, tools, or cribbing; and
• Exposure to harsh environmental hazards such as
alkaline, acids, or other chemicals that can attack the
crane's paint finish.
While the surfaces of the crane that are easily seen have the
biggest impact on the appearance of the crane, particular
attention should be given to the undercarriage of the crane to
minimize the harmful effects of corrosion.
Exercise special care and increase the frequency of cleaning
if the crane is operated:
• on roads where large quantities of salt or calcium are
applied to treat icy and snowy road surfaces;
• in areas that use dust control chemicals;
• anywhere there are increased levels of wetness -
especially near salt water;
• during prolonged periods of exposure to damp
conditions (e.g., moisture held in mud), where certain
crane parts may become corroded even though other
parts remain dry; or
• in high humidity, or when temperatures are just above
the freezing point.
Cleaning Procedures
To help protect against corrosion of National Cranes,
National Product Support recommends washing the crane at
least monthly to remove all foreign matter. More frequent
c l e a n i n g m a y b e n e e d e d w h e n o p e r a t i n g i n h a r s h
environmental conditions. To clean the crane, follow these
guidelines:
• High pressure water or steam is effective for cleaning
the crane's undercarriage and wheel housings. Keeping
these areas clean will not only help retard the effects of
corrosion, but will also improve the ability to identify
potential issues before they grow into larger problems.
• Rinse the dirt and dust off before washing the crane. Dirt
can scratch the crane's finish during washing/cleaning.
• Hard to clean spots caused by road tar or bugs should
be treated and cleaned after rinsing and prior to
washing. Do not use solvents or gasoline.
• Wash using only soaps and detergents recommended
for automotive paint finishes.
• Rinse all surfaces thoroughly to prevent streaking
caused by soap residue.
• Allow the crane to dry thoroughly. You can accelerate
drying by using compressed air to remove excess water.
NOTE: Polishing and waxing (using an automotive-type
wax) is recommended to maintain the original paint
finish.
Inspection and Repair
• Immediately following cleaning, National Product
Support recommends an inspection to detect areas that
may have become damaged by stone chips or minor
mishaps. A minor scratch (one that has not penetrated
to the substrate s urf ace) can be buffed with an
automotive-type scratch remover. It is recommended
that a good coat of automotive wax be applied to this
area afterwards.
• All identified spots and/or areas that have been
scratched through to the metal should be touched up
and repaired as soon as possible to prevent flash
rusting. To repair a major scratch (down to bare metal) or
minor damage, follow these procedures:
CAUTION
High pressure water can be forced into spaces and
infiltrate beyond seals. Avoid pressure washing in the
vicinity of electrical controls, panels, wiring, sensors,
hydraulic hoses and fittings, or anything that can be
damaged by high pressure cleaning/spraying.
REFERENCE ONLY