Maintenance
55
Checks and
corrections
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
4,723
3,486
39
3697
2728
5255
3878
6150
4539
