127
ARR 1575
MAINTENANCE MANUAL
3.6.27. Check of the screw connection tightening
• Check regularly that no bolted connections have been slackened. Use torque spanners to tighten.
Table of torques used for cap nuts with sealing “O” ring - hoses
Torques for cap nuts incl. “O“ ring - hoses
Nm
lb ft
Spanner
Size
Thread
Pipe
Nominal
Min
Max
Nominal
Min
Max
14
12x1,5
6
20
15
25
15
11
18
17
14x1,5
8
38
30
45
28
22
33
19
16x1,5
8
45
38
52
33
28
38
10
22
18x1,5
10
51
43
58
38
32
43
12
24
20x1,5
12
58
50
65
43
37
48
27
22x1,5
14
74
60
88
55
44
65
15
30
24x1,5
16
74
60
88
55
44
65
32
26x1,5
18
105
85
125
77
63
92
36
30x2
20
135
115
155
100
85
114
22
41
36x2
25
166
140
192
122
103
142
46
28
50
42x2
30
240
210
270
177
155
199
50
45x2
35
290
255
325
214
188
240
52x2
38
330
280
380
243
207
280
42
Torque
Torque
For 8,8 Bolts (8G)
For 10,9 Bolts (10K)
For 8,8 Bolts (8G)
For 10,9 Bolts (10K)
Thread
Nm
lb ft
Nm
lb ft
Thread
Nm
lb ft
Nm
lb ft
M6
10
7,4
14
10,3
M18x1,5
220
162,2
312
230,1
M8
24
25,0
34
25,0
M20
390
287,6
550
405,6
M8x1
19
14,0
27
19,9
M20x1,5
312
230,1
440
324,5
M10
48
35,4
67
49,4
M22
530
390,9
745
549,4
M10x1,25
38
28,0
54
39,8
M22x1,5
425
313,4
590
435,1
M12
83
61,2
117
86,2
M24
675
497,8
950
700,6
M12x1,25
66
48,7
94
69,3
M24x2
540
398,2
760
560,5
M14
132
97,3
185
136,4
M27
995
733,8
1400
1032,5
M14x1,5
106
78,2
148
109,1
M27x2
795
586,3
1120
826,0
M16
200
147,5
285
210,2
M30
1350
995,7
1900
1401,3
M16x1,5
160
118,0
228
168,1
M30x2
1080
796,5
1520
1121,0
M18
275
202,8
390
287,6
Values given in the Table are the torques at dry tread (at coefficient of friction = 0,14). Such values do NOT apply to a greased thread.
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