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Foreword
Tightening torque for 102 engine series
1) Bolt and nuts
Use these torques for bolts and nuts (unit: mm) of Cummins Engine.
Thread diameter
mm
6
8
10
12
2) Eye joints
Use these torques for eye joints (unit: mm) of Cummins Engine.
Thread diameter
mm
6
8
10
12
14
3) Tapered screws
Use these torques for tapered screws (unit: inch) of Cummins Engine.
Thread diameter
inch
1 / 16
1 / 8
1 / 4
3 / 8
1 / 2
3 / 4
1
Tightening torque table for hoses (taper seal type and face seal type)
a Tighten the hoses (taper seal type and face seal type) to the following torque, unless otherwise specified.
a Apply the following torque when the threads are coated (wet) with engine oil.
Nominal
Width
size of
across flats
hose
02
19
22
03
24
04
27
05
32
06
36
(10)
41
(12)
46
(14)
55
00-14
Tightening torque (Nm {kgm})
Range
34 – 54 {3.5 – 5.5}
34 – 63 {3.5 – 6.5}
54 – 93 {5.5 – 9.5}
59 – 98 {6.0 – 10.0}
84 – 132 {8.5 – 13.5}
128 – 186 {13.0 – 19.0}
177 – 245 {18.0 – 25.0}
177 – 245 {18.0 – 25.0}
197 – 294 {20.0 – 30.0}
246 – 343 {25.0 – 35.0}
Tightening torque
Nm
10 ± 2
24 ± 4
43 ± 6
77 ± 12
Tightening torque
Nm
8 ± 2
10 ± 2
12 ± 2
24 ± 4
36 ± 5
Tightening torque
Nm
3 ± 1
8 ± 2
12 ± 2
15 ± 2
24 ± 4
36 ± 5
60 ± 9
Taper seal
type
Thread size
Target
(mm)
44 {4.5}
—
44 {4.5}
14
74 {7.5}
—
78 {8.0}
18
103 {10.5}
22
157 {16.0}
24
216 {22.0}
30
216 {22.0}
33
245 {25.0}
36
294 {30.0}
42
Standard tightening torque
kgm
1.02 ± 0.20
2.45 ± 0.41
4.38 ± 0.61
7.85 ± 1.22
kgm
0.81 ± 0.20
1.02 ± 0.20
1.22 ± 0.20
2.45 ± 0.41
3.67 ± 0.51
kgm
0.31 ± 0.10
0.81 ± 0.20
1.22 ± 0.20
1.53 ± 0.41
2.45 ± 0.41
3.67 ± 0.51
6.12 ± 0.92
Face seal type
Nominal thread size
Root diameter
– Threads per inch,
(mm) (Reference)
Thread series
9
– 18UN
16
—
11
– 16UN
16
—
13
– 16UN
16
1 – 14UNS
3
1
– 12UN
16
—
—
—
14.3
—
17.5
—
20.6
25.4
30.2
—
—
—
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