52
Maintenance
Screw connec-
tions
Retighten screws
All screws have to be retightened:
•
after the first 5 operating hours and
•
according to the frequency of use,
•
but at least once a season.
Special tightening
torques
Take heed of the special tightening torques for the following screw
connections:
•
110 Nm
Raking wheel arms
•
90 Nm
Spring tines
•
20 Nm
Wheel nuts
Tightening torques
for screw connec-
tions
All other screw connections are to be tightened according to the table
below. On this implement screws with a minimum quality of "8.8" (read
off the screw head) are used.
Raking wheel arm
110 Nm
Spring tines
90 Nm
20 Nm
Wheel nut
Screws -
Dimensions
Screw quality
8.8
10.9
12.9
M6
9.9 Nm (7.3 ft.lbs)
14 Nm (10.3 ft.lbs)
17 Nm (12.5 ft.lbs)
M8
24 Nm (17.7 ft.lbs)
34 Nm (25 ft.lbs)
41 Nm (30.3 ft.lbs)
M10
48 Nm (35.4 ft.lbs)
68 Nm (50.2 ft.lbs)
81 Nm (59.8 ft.lbs)
M12
85 Nm (62.7 ft.lbs)
120 Nm (88.6 ft.lbs)
145 Nm (107 ft.lbs)
M16
210 Nm (155 ft.lbs)
290 Nm (214 ft.lbs)
350 Nm (258 ft.lbs)
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