List Of Optional Attachments; Classification Of Rocks; Class 1; Class 2 - KOVACO MiniZ400 Instrucciones De Operacion Y Mantenimiento

15. LIST OF OPTIONAL ATTACHMENTS

The MiniZ 400 loader can operate with the following tools and attachments:
$ Basic shovel
$ Bulk bucket
$ Grate bucket
$ Swing blade
$ V-shaped snow-plough blade
$ Rotary snow plough
$ Winter sander
$ Pallet forks
$ Forks with holder
$ Log forks
$ Bale carrier
$ Swivel undercut
$ Sweeping device
$ Angle broom
$ Drilling device
$ Combined bucket 4 in 1
$ Mixing bucket
$ Bucket with holder
$ Lawn mower with width
$ Tree shears
$ Trencher
A complete list of attachments is available on the manufacturer's website.
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16. CLASSIFICATION OF ROCKS

Rocks are classified into seven classes according to the difficulty of separating and removing them. These classes are
called mining classes (this is an excerpt from the standard; the exact wording is given in ČSN 733050).

16.1. CLASS 1

a) cohesive with a soft consistency (topsoil, loam, loamy sand, etc.);
b) non-cohesive, loose with a grain size up to 20 mm;
$ with a grain size over 20 mm in up to 10% of the volume of the rock to be separated (sand, medium gravel, gravel
with stone).

16.2. CLASS 2

a) cohesive with a hard consistency (topsoil, loam, loamy sand, peat);
b) non-cohesive, moderately compacted with a grain size up to 20 mm;
$ with a grain size from 20 to 50 mm in more than 10% of the volume of the rock to be separated;
$ with a grain size above 50 mm in up to 10% of the volume of the rock to be separated (sand gravel, coarse gravel,
or gravel with stone);
c) construction waste and landfill materials similar in nature to Class 2 rocks.

16.3. CLASS 3

a) cohesive with a soft to firm consistency;
b) non-cohesive, compacted with a grain size up to 50 mm;
$ with a grain size from 50 to 100 mm in more than 10% of the volume of the rock to be separated;
$ with a grain size over 100 mm in up to 10% of the volume of the rock to be separated (coarse gravel, or gravel with stone);
c) non-cohesive, classified in Classes 2 and 3, held together by a cohesive material, as far as the grains remain in lumps
after separation;
d) weathered with very weakened structural bonds, qualifying as clay-sand soils (hydrothermally decomposed rocks, eluvial
deposits);
c) construction waste and landfill materials similar in nature to Class 3 rocks.

16.4. CLASS 4

a) cohesive with a firm and hard consistency (clay, sandy clay, sandy loam, dust loam);
b) non-cohesive with a grain size from 100 to 250 mm in more than 10% up to 50% of the volume of the rock to be separated,
with a grain size above 250 mm in up to 10% of the volume of the rock to be separated (coarse gravel, gravel with boulders)
c) non-cohesive, classified in Classes 2 and 3, held together by a cohesive material, as far as the grains remain in lumps
after separation;
d) solid, slightly weathered and weathered (weathered claystones, marlstones, tuffs, turiffs, slates, etc.), weathered slates,
sandstones, soft limestones, etc.;
e) solid, weathered, severely cracked. The rock is disturbed along the cracks and its disintegration spreads into neighbouring
areas. The grain size corresponds to non-cohesive Class 4 rocks (highly cracked granites, gneisses and limestones);
f) slurry and liquid in consistency (muddy alluvium, liquid sand, decomposed peat).

16.5. CLASS 5

a) non-cohesive with a grain size from 100 to 250 mm in more than 50% of the volume of the rock to be separated, with a
grain size above 250 mm up to 0.1 m 3 individually in more than 10% up to 50% of the volume of the rock to be separated
(coarse gravel with stone/boulders);
b) non-cohesive, classified in Class 4, held together by a cohesive material with Class 4 properties, as far as the grains
remain in lumps after separation (coarse gravel with clay-loam bonding material);
c) solid, healthy, in layers up to 150 mm thick (conglomerate with clay bonding material, slate, travertine, sandy marlstone, etc.);
d) solid, igneous, sedimentary, weathered and cracked with areas of divisibility of less than 150 mm (weathered granite,
gneiss, andesite, sandstone, quartz);
e) landfill materials similar in nature to Class 5 rocks;
f) frozen soils.

16.6. CLASS 6

a) non-cohesive with boulders from 250 mm up to 0.1 m 3 individually in more than 50% of the volume of the rock to be
separated, with boulders above 0.1 m 3 individually in up to 50% of the volume of the rock to be separated;
b) solid, igneous and metamorphic rocks, healthy with areas of divisibility up to 1.0 m in bench block separation. Crack
distances less than 250 mm (granite, gneiss, andesite, basalt, slate, phyllite);
c) firmly sedimented, healthy with a distance of divisible surfaces up to 1.0 m. Other crack distances of up to 250 mm –
coarsely bench-shaped (coarsely fragmentary to boulder conglomerates and agglomerates with calcareous and marly
bonding material, limestones, dolomite, etc.).

16.7. CLASS 7

a) non-cohesive with a grain size over 0.1 m 3 individually in more than 50% of the volume of the rock to be separated;
b) solid, healthy, massive, or with irregular spherical, columnar detachment with individual wedges, with areas of divisibility
greater than 250 mm (quartz, silica granite, gneiss, basalt, andesite, veined quartz, cherty limestones, diorites).
Abbreviated characteristics of the mining classes according to the ways in which rocks can be separated:
Class 1 - loose rocks that can be picked up with a shovel/with a loader;
Class 2 - excavatable rocks, separable with a spade/with a loader;
Class 3 - diggable rocks, separable with a pickaxe/with an excavator;
Class 4 - crumbly solid rocks, separable with a wedge/with an excavator;
Class 5 - solid rocks that are easily broken up and separable with a ripper/heavy excavator (over 40 tons) or with explosives;
Class 6 - solid rocks that are difficult to break up with a heavy ripper or with explosives;
Class 7 - solid rocks that are very difficult to break up, separable with explosives.

17. PREVENTIVE MAINTENANCE

Maintenance is important and is the best protection against premature wear of the unit assemblies. Perform the prescribed
work tasks to prevent possible malfunctions. In regular checks and inspections, it is possible to detect wear and malfunction,
and failures can be prevented by cleaning and lubricating, tightening loose connections, removing leaks, etc.
Maintenance includes the following work tasks:
cleaning and care, recharging the battery, topping up lubricating greases, changing oils, checking all units, adjusting,
checking mechanical joints and their tightening, etc.
For a better overview, we have included all maintenance work tasks in tables according to the number of operating
hours worked. Read the number of operating hours on the control panel located in the cabin. Keep a record of the
maintenance work tasks carried out in the machine's warranty book. Maintenance is divided according to the inspection
and maintenance schedule.
The following common rules apply to all disassembly and assembly procedures:
$ Use the most suitable tools that do not damage the nuts or bolt heads.
$ Components that move relative to each other when assembled are not mounted dry. They need to be lubricated
with a lubricant designated for the respective component in service.
$ When assembling preserved components, the preservative grease must be removed and replaced with operating lubricant.
$ Replace defective components only with original parts.

17.1 INSPECTION AND MAINTENANCE SCHEDULE

AS NEEDED
LUBRICANT
GEAR OIL
HYDRAULIC OIL
FIRST-TIME MAINTENANCE
AT REGULAR MAINTENANCE INTERVALS
Figure 28
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