Zoomlion ZT20J, Руководство по обслуживанию и ремонту

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3-3
3.2.2 Safety and operating standards
Safety is paramount when performing equipment maintenance. Always pay attention to weight. Never
attempt to move heavy parts without mechanical assistance. Do not park heavy objects in unstable
locations. Ensure that adequate support is provided when lifting.
3.2.3 Cleaning
a) Prevent dirt or impurities from entering critical parts of the machine for longer service lift. This
unit has taken preventive measures to protect against such violations. Shields, covers, seals and
filters are used to keep the air, diesel and oil supplies clean. However, maintenance should be
conducted according to the scheduled time for protective measures functioning properly.
b) When the air, diesel or oil lines are disconnected, the adjacent areas, as well as the opening and
joints, should be cleaned. Once a pipe or component is disconnected, cover all openings
immediately to prevent foreign matter from entering.
c) All parts should be cleaned and inspected during maintenance and all channels and openings
should be clear. Cover all parts to keep them clean. All parts must be cleaned before installation.
New parts should be stored in containers before use.
3.2.4 Component disassembly and installation
a) Use an adjustable lifting device if needed. All spreaders (slings, chains, etc.) must be parallel to
each other and as perpendicular as possible to the top of the hoisted part.
b) The angle between the support structure and the part is less than 90 degrees, the load capacity of
the eye bolt or similar bracket will be reduced when disassemble a part on a corner.
c) If a part is difficult to disassemble, check if all nuts, bolts, cables, brackets, and wiring have been
removed, and whether adjacent parts obstruct removal.
3.2.5 Component disassembly and reinstallation
Implement disassembling or reassembling in order. If the removal or assembly of a part has not been
completed, do not assemble or disassemble another part. Please review your work at all times to ensure
that there are no omissions, no adjustments may be made without approval (except for the proposed
adjustments).
3.2.6 Pressure-fit parts
When assembling the press-fit parts, lubricate the mating surfaces with an anti-seize type or
molybdenum disulfide-base compound.
3.2.7 Bearing
a) After removing the bearing, cover it to avoid stains or abrasives. Clean the bearing in a
non-flammable cleaning agent and allow it to drip dry. Compressed air can be used, but the