horsch LEEB 12 TD, Руководство по эксплуатации, Страница: 160 / 181

NOTE
Additional specifications of the hydraulic system
(circuit diagrams, etc.) can be obtained from the
HORSCH service department.
Inspection criteria for hydraulic
hoses
NOTE
The following inspection criteria must be ob-
served in the interest of your own safety and to
reduced environmental damages!
Replace hoses, if these fulfil at least one
criterion from the following list:
¾
Damage to the outer layer to the ply (e.g.
chafing, cuts, cracks).
¾
Embrittlement of the outer layer (formation of
cracks in the hose material).
¾
Deformations, which do not correspond
with the natural shape of the hose. Both in
pressureless and pressurized condition or
in case of bending (e.g. layer separation,
formation of blisters, squeezing, buckling).
¾
Leakages.
¾
Failure to comply with installation requirements.
¾
The max. utilization period of 6 years has expired.
The date of manufacture on the hydraulic hose
fitting plus 6 years is decisive. If the fitting is
marked with the manufacturing date "2014",
the utilization period ends in January 2020.
See also "Identification of hydraulic hoses".
NOTE
Leaking hoses / pipes and connecting pieces
are frequently the result of:
¾
missing O-rings or seals
¾
damaged or poorly fitted O-rings
¾
brittle or deformed O-rings or seals
¾
foreign objects
¾
loose hose clamps
Assembly and disassembly of
hydraulic hoses
NOTE
Use only original spare hoses from HORSCH
LEEB AS.
These spare hoses withstand the chemical,
mechanical and thermal loads.
¾
Generally use hose clamps made of V2A
when installing hoses.
When installing and disassembling hydraulic
hoses strictly comply with the following notes.
Generally ensure strict cleanliness!
Hydraulic hoses must generally be installed in
such a way, the following is ensured under any
operating condition:
• no tensile loads, except by own dead weight
• no buckling stress in case of short lengths
• no falling below the permissible bending radii
• avoiding external mechanical stresses on
the hydraulic hoses
• no rubbing of hoses on components or
against each other through appropriate
arrangement and fastening
• if necessary, protection through protective
sheathing
• covering sharp-edged components
¾
Fasten hydraulic hoses at the intended
fastening points.
¾
Hose clamps are to be avoided at locations
where natural movements and changes of the
hose length may be interfered with.
¾
It is not permitted to cover hydraulic hoses
with paint!
NOTE
When connecting a hydraulic hose to moving
parts , the length of the hose must be dimen-
sioned in such a way that over the total move-
ment range the bending range is not lower
than permitted and/or the hydraulic hose is not
additionally subjected to tensile loads.
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