Optimal 1700, Manual

Page: 11 / 43

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5. Care and Maintenance
5.1
Blade Guides
Thanks to the plastic lining the spade guides do not require lubrication.
Once the plastic lining has been worn to the point were the heads of the countersunk
screws are even with the surface of the plastic linings, they must be replaced to prevent
the screws from damaging the blades.
IMPORTANT: After the first digging day the screws (Item A, page 11) of the
tension block have to be tightened with a torque of 730 Nm
(ft.lb.538).
Make sure tension bolts at bottom of guides are always tight !
Keep the guides cleaned.
5.2 Lubrication
Once per week lubricate all greasing points with lithium-based grease,
as per lubrication chart, Page 17
5.3 Hydraulic Oil Supply
Check level of hydraulic oil regularly. For checking, retract all blades “up”
and lower the tree spade to the ground. If in that position the oil level is
below the mark of the sight glass, oil must be refilled.
5.4 Hydraulic Hoses
All hydraulic hoses must be inspected at least once per year. Damaged hoses
must be replaced. At least after 6 years all hoses must be replaced.
5.5 Cylinders
In case the tree spade is not getting used for two weeks, all piston rods of the hydraulic
cylinders must be cleaned and covered with a preserving oil film.
5.6 Safety switch
It must be ensured that the plunger and roller of the safety switch are always able to
move smoothly. Particularly after the tree spade has been idle for some period of time,
these parts tend to seize. In that case they must be cleaned and lubricated. Operating
the tree spade when the safety switch is not functioning properly may cause serious
damage