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6.1.7 Check for wear
Inspect moving parts for wear.
Check tyres for wear and damage.
6.1.8 Cleaning
General
We recommend the use of pressured air
when cleaning the machine. Thus there is
less risk of damaging the bearings of the ma-
chine.
Pre-stretch rollers
It is important to keep the pre-stretcher's roll-
er free from particles, dust, straw and tack.
Use gasoline or similar. Dirty rollers may
cause incorrect stretch of the film and incor-
rect coverage of the bale.
Cylinders
Keep away from aggressive chemicals etc. in
order to avoid damage to the piston surface.
6.2 Maintenance hydraulics
6.2.1 Oil filter
Filter visual indicator (I)
Green - filter is clean
Red
- change filter element
Check the filter when the oil is warm (at trac-
tor engine rpm. as for ordinary wrapping).
Cold oil may give wrong indication.
Note! On tractors with closed centre system
the pre-stretcher satellite must rotate in order
to get correct indication (oil must flow through
the filter). Be careful. Beware of the rotating
pre-stretcher satellite.
Filter exchange intervals
Check the filter element every 3000 bales or
at least once a season. The filter element
should be replaced for every 8000 bales be-
ing wrapped and always once a season.
Caution!
Release pressure in the system before open-
ing the filter housing.
6.2.2 Hydraulic tractor oil
replacement
Keep hydraulic oil clean! Clean hydraulic oil
will prevent excessive wear and premature
failure of components. Replace the tractor
filter and oil as per manufacturer’s instruc-
tions.
6.2.3 Ventilating the hy-
draulic system:
– Connect the hydraulic lines to the tractor
– Unscrew the line between the filter housing
and hydraulic block to let air escape
– Move the control lever in the direction
“close top section” until oil comes out of the
union
– Tighten the union
6.3 Maintenance electrics & electronics
6.3.1 Controls
Check wirings for damage or corrosion. Check all plugs and sockets.
6.3.2 Cleaning
Keep command panel and electric cabinet clean. Use a moist cloth. Avoid flowing water.
Maintenance
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