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To renew ethyl alcohol operative reserve – take the container for alcohol from the box
(Figure 7d), remove the cap, unscrew the head and pour about 5 ml of alcohol . Screw the head
of the container and establish the cap on its place .
2.2.2.3 Intended Use of the Device
Intended use of the device is possible after the requirements given in paragraph 2 .2 .1 are
observed and the procedures described in paragraph 2 .2 .2 .2 are performed .
Magnetic copying of an object using MCAS consists of the following steps:
z
preparation of the investigated surface,
z
selecting MT type,
z
preparation (demagnetization) of MT,
z
magnetic copying .
The User is to select MT type (metal or plastic) and width (1’’ or ½’’) . The following recom
-
mendations should be taken into consideration:
z
Plastic MT is considerably less expensive than metal MT. As technical properties of
both MT types are almost the same, plastic MT can be used in the majority of cases.
z
It is recommended
not to use plastic MT
in the conditions which worsen the quality
of magnetic copying and shortens MT lifetime, e .g . on very rough surfaces (severe
corrosion, premilling), on hot surfaces (when surface temperature e50 ˚C),
on surfaces with sticky stains that cannot be removed .
z
It is recommended to
use plastic MT
in the conditions which improve the quality of
magnetic copying, e .g . for examining the relief and structure of aluminum objects, for
examining weak internal stresses in ferromagnetic objects, for magnetic copying in
narrow openings and in grooves where the only way to avoid MT damage is to use ½’’
plastic MT .
Preparation of the Investigated Surface
Rust layer, especially on the heavily corroded surfaces, often is the only remaining
carrier of information about original numbers.
Preparation (Demagnetization) of MT
Selecting MT Type
z
Provide easy access to investigated surface: disconnect vehicle shrouds, cables and
vehicle branch pipes blocking the access . Hereinafter the investigated surface means
both front and rear areas of the vehicle body data carriers, as well as the front of the
engine number area .
z
Clean investigated surface from foreign particles (such as dust, dirt, sand, tar, etc .),
as well as from lubricants film with a tissue paper or a brush and, if necessary, clean
it with alcohol, dry or remove a moisture . Impurity slightly decreases the quality of
magnetic copying, but results in untimely magnetic tape wear, while the particles adhered
to the tape will damage the magneto-optical crystal and foul the tape-drive mechanism .
ATTENTION! Do not remove rust from the surface!
z
take the Combination Magnetic Scanner (CMS) out of the compartment of MCAS
(Figure 1, pos . 13),
z
choose the used (processed) magnetic tape strip,
z
press and hold the demagnetizer drive button (Figure 8, pos . 1), insert the end of the
magnetic tape strip into the demagnetizer slot (Figure 8, pos . 6) slightly pushing it
forward until its end appears on the opposite side,
z
release the demagnetizer drive button (Figure 8, pos . 1), take the threaded end of the
magnetic tape strip and pull it through the demagnetizer,
z
use the demagnetized magnetic tape for a new magnetic copy or place it into the
cartridge for demagnetized MTs (marked with green marker) (Figure 6a, b) .
Summary of Contents for 7505M
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