Kverneland Qualidisc Farmer, User Manual

Page: 60 / 71

Maintenance
60
Checks
Screwed assemblies
Regularly check wheel nuts for tightness and the hub clearance
adjustment.
All the bolts must be tightened:
•
After the initial period of use.
•
According to the frequency of use.
•
At least once per season.
Standard tightening
torques
Unless otherwise specified, all screwed assemblies should be
tightened in accordance with the table below. The values shown apply
to rigid assemblies with normal thread pitches and no bearing washer.
Values provided for assembly with no special lubrication:
Diameter
of screw
Quality 8.8 Quality 10.9 Quality 12.9
N.m ft.lbf N.m ft.lbf N.m ft.lbf
3 1.41 1.04 2.07 1.53 2.43 1.79
4 3.22 2.38 4.74 3.50 5.5 4.06
5 6.4 4.72 9.4 6.94 11 8.12
6 11.1 8.19 16.3 12.03 19.1 14.10
8 27 20 39 29 46 34
10 53 39 78 58 92 68
12 92 68 136 100 159 117
14 148 109 218 161 255 188
16 232 171 341 252 399 294
18 330 244 469 346 549 405
20 471 348 667 492 781 576
22 648 478 920 679 1077 795
24 809 597 1148 847 1343 991
27 1201 886 1706 1259 1997 1474
30 1628 1201 2311 1706 2704 1996
33 2216 1635 3148 2323 3684 2719
36 2840 2096 4036 2979 4723 3486
39 3697 2728 5255 3878 6150 4539