Skyjack SJKB-40-D, Инструкция по эксплуатации и перечень запасных частей

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SECTION 5, Page 4 SJKB-40-D, SJKB-40-D/F
JUN. 1999
HYDRAULIC SYSTEM AND COMPONENT
MAINTENANCE AND REPAIR
The following points should be kept in mind when working
on the hydraulic system or any component:
1. Any structure has limits of strength and
durability. To prevent failure of structural parts
of hydraulic components, relief valves which limit
pressure to safe operating values are included
in the hydraulic circuits.
2. Tolerance of working parts in the hydraulic
system is very close. Even small amounts of
dirt or foreign materials in the system can cause
wear or damage to components, as well as
general faulty operation of the hydraulic system.
Every precaution must be taken to assure
absolute cleanliness of the hydraulic oil.
3. Samples of hydraulic oil should be drawn from
the reservoir every six months. These samples
should be about two quarts and should be taken
while the oil is warmed through normal operation
of the system. If possible, the sample should be
analyzed by a qualified lubrication specialist to
determine whether it is suitable for further use.
The intervals between oil changes depend on
operating conditions and on the care used in
keeping the oil clean.
4. Whenever there is a hydraulic system failure
which gives reason to believe that there are
metal particles or foreign materials in the
system, drain and flush the entire system and
replace the filter cartridges. A complete change
of oil must be made under these circumstances.
5. Whenever the hydraulic system is drained,
check the magnets in the hydraulic reservoir for
metal particles. If metal particles are present,
flush the entire system and add a new change
of oil. The presence of metal particles also may
indicate the possibility of imminent component
failure. A very small amount of fine particles is
normal.
6. DO NOT use synthetic or fire resistant oil in this
work platform. Use ATF Dexron III (ESSO) or
equivalent hydraulic oil. For conditions causing
oil temperatures below -31°F (-35° C) and above
122°F (50° C) consult Skyjack, Inc.
7. All containers and funnels used in handling
hydraulic oil must be absolutely clean. Use a
funnel when necessary for filling the hydraulic
oil reservoir, and fill the reservoir only through
the filter opening. The use of cloth to strain the
oil should be avoided to prevent lint from getting
into the system.
8. When removing any hydraulic component, be
sure to cap and tag all hydraulic lines involved.
Also, plug the ports of the removed components.
9. All hydraulic components must be disassembled
in spotlessly clean surroundings. During
disassembly, pay particular attention to the
identification of parts to assure proper
reassembly. Clean all metal parts in a clean
mineral oil solvent. Be sure to thoroughly clean
all internal passages. After the parts have been
dried thoroughly, lay them on a clean, lint-free
surface for inspection.
10. Replace all o-rings and seals when overhauling
any component. Lubricate all parts with clean
hydraulic oil before reassembly. Use small
amounts of petroleum jelly to hold o-rings in
place during assembly.
11. Be sure to replace any lost hydraulic oil when
completing the installation of the repaired
component, and bleed any air from the system
when required.
12. All hydraulic connections must be kept tight. A
loose connection in a pressure line will permit
the oil to leak out or air to be drawn into the
system. Air in the system can cause damage to
the components and noisy or erratic system
operation.
MAINTENANCE. Three simple maintenance procedures
have the greatest effect on the hydraulic system
performance, efficiency and life. Yet, the very simplicity
of them may be the reason they are so often overlooked.
What are they? Simply these:
1. Change filters regularly.
2. Maintain a sufficient quantity of clean hydraulic
oil of the proper type and viscosity in the
hydraulic reservoir.
3. Keep all connections tight.