Komatsu PC390LC-10 Shop Manual page 54

FOREWORD
For 102, 107, and 114 Engine Series (Eye Joints)
★ Tighten the metric eye joints of the 102, 107, and 114 engine series to the torque in this table, unless there are special
instructions.
mm
6
8
10
12
14
For 102, 107, and 114 Engine Series (Taper Screws)
★ 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.
Material
Thread Size (inch)
1/16
1/8
1/4
3/8
1/2
3/4
c
00-38
Thread size
Tightening Torque
N•m
8 ±2
10 ±2
12 ±2
24 ±4
36 ±5
In Cast Iron or Steel
N•m kgm
15 ±2 1.53 ±0.20
20 ±2 2.04 ±0.20
25 ±3 2.55 ±0.31
35 ±4 3.57 ±0.41
55 ±6 5.61 ±0.61
75 ±8 7.65 ±0.82
STANDARD TIGHTENING TORQUE
kgm
0.81 ±0.20
1.02 ±0.20
1.22 ±0.20
2.45 ±0.41
3.67 ±0.51
Tightening Torque
lbf ft N•m
11.06 ±1.48 5 ±1
14.75 ±1.48 15 ±2
18.44 ±2.21 20 ±2
25.81 ±2.95 25 ±3
40.57 ±4.43 35 ±4
55.32 ±5.90 45 ±5
lbf in
70.81 ±17.70
88.51 ±17.70
106.21 ±17.70
212.42 ±35.40
26.55 ±3.69
In Aluminum
kgm lbf ft
0.51 ±0.10 3.69 ±0.74
1.53 ±0.20 11.06 ±1.48
2.04 ±0.20 14.75 ±1.48
2.55 ±0.31 18.44 ±2.21
3.57 ±0.41 25.81 ±2.95
4.59 ±0.51 33.19 ±3.69
PC360/390LC-10
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