Komatsu PC4000 - Metric Standard Thread Torque Specifications

Assembly Procedure PC8000
PC4000Asrev05
Edition 08/2005
89
3.25 Metric standard thread
Bolt size
Wrench size (mm) Tightening torque MA (Nm)
(mm)
8.8 10.9 12.9
M 8
6
13 21 31 36
M 10
8
17 43 63 73
M 12
10
19 74 108 127
M 14
12
22 118 173 202
M 16
14
24 179 265 310
M 18
14
27 255 360 425
M 20
17
30 360 510 600
M 22
17
32 485 690 810
M 24
19
36 620 880 1030
M 27
19
41 920 1310 1530
M 30
22
46 1250 1770 2080
M 33
24
50 1690 2400 2800
M 36
27
55 2170 3100 3600
M 39 60 2800 4000 4700
M 42
32
65 3500 4950 5800
M 45
70 4350 6200 7200
M 48
35
75 5200 7500 8700
M 52
80 6700 9600 11200
M 56
41
85 8400 12000 14000
M 60 90 10400 14800 17400
M 64
46
95 12600 17900 20900
M 68 100 15200 21600 25500
The torque indications on the chart attached are valid only when the bolts are
manufactured according to DIN.
Threads and bolt heads must be greased carefully with grease KP2K.
The surfaces of contact which should screwed together have to be free of grease.
Divergencing torques: Bolts at excavator slew rings (see Service Bulletin AH00511
last issue)