FOREWORD
STANDARD TIGHTENING TORQUE
PC390LL-10
00-37
For 102, 107, and 114 Engine Series (Eye Joints)
00
★
Tighten the metric eye joints of the 102, 107, and 114 engine series to the torque in this table, unless there are special
instructions.
For 102, 107, and 114 Engine Series (Taper Screws)
00
★
Tighten the taper screws (unit: inch) of the 102, 107, and 114 engine series to the torque in this table, unless there are
special instructions.
Thread size
Tightening Torque
mm
N•m
kgm
lbf in
6
8 ±2
0.81 ±0.20
70.81 ±17.70
8
10 ±2
1.02 ±0.20
88.51 ±17.70
10
12 ±2
1.22 ±0.20
106.21 ±17.70
12
24 ±4
2.45 ±0.41
212.42 ±35.40
14
36 ±5
3.67 ±0.51
26.55 ±3.69
Tightening Torque
Material
In Cast Iron or Steel
In Aluminum
Thread Size (inch)
N•m
kgm
lbf ft
N•m
kgm
lbf ft
1/16
15 ±2
1.53 ±0.20
11.06 ±1.48
5 ±1
0.51 ±0.10
3.69 ±0.74
1/8
20 ±2
2.04 ±0.20
14.75 ±1.48
15 ±2
1.53 ±0.20
11.06 ±1.48
1/4
25 ±3
2.55 ±0.31
18.44 ±2.21
20 ±2
2.04 ±0.20
14.75 ±1.48
3/8
35 ±4
3.57 ±0.41
25.81 ±2.95
25 ±3
2.55 ±0.31
18.44 ±2.21
1/2
55 ±6
5.61 ±0.61
40.57 ±4.43
35 ±4
3.57 ±0.41
25.81 ±2.95
3/4
75 ±8
7.65 ±0.82
55.32 ±5.90
45 ±5
4.59 ±0.51
33.19 ±3.69
