Standard Tightening Torque; Standard Tightening Torque For Bolts And Nuts; Specific Tightening Torques - Komatsu WB140-2N Operation & Maintenance Manual

STANDARD TIGHTENING TORQUE

STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS

Thread
Pitch
diameter
(mm)
(mm)
68101214 11.251.
51.752
161820222 22.52.5
4 2.53
2730 33.5

SPECIFIC TIGHTENING TORQUES

• This torque table is not valid for screws or nuts that contain nylon parts or spring washers.
Item
Cab
Wheels
Front bucket
Backhoe bucket
Engine and transmission
WB140-2N, WB150-2N
Wrench
size
kgm
(mm)
1013171 0.96 ±
922 0.12.3 ±
0.24.6 ±
0.57.8 ±
0.812.5 ± 1
2427303 19.5 ± 227
236 ± 338 ±
452 ± 666
± 7
4146 96 ± 10131
± 14
Front support screws Rear support screws
Front Rear
Teeth
Central teeth Side teeth
Front support central screw Rear support
central screw
8.8
Nm lb. ft.
9.5 ± 123 ± 7 ± 0.7417
245 ± ± 1.532 ±
4.977 ± 3.657 ±
8122 ± 13 5.990 ± 9.6
191 ± 141 ±
21262 ± 15194 ±
28372 ± 21275 ±
40511 ± 30377 ±
57644 ± 70 42475 ± 52
945 ± 698 ±
1001287 ± 74950 ±
140 103
Description
MAINTENANCE
10.9
kgm Nm
1.3 ± 13.5 ±
0.153.2 ± 1.532.2 ±
0.36.5 ± 3.563 ±
0.611 ± 6.5108 ±
117.5 ±2 11172 ± 18
27 ± 337 ± 268 ±
453 ± 673 29366 ±
± 892 ± 10 36524 ±
57719 ±
80905 ± 98
135 ± 1329 ±
15184 ± 20 1401810 ±
190
kgm Nm
196 ±
20 ± 120
9.8196 ±
± 1
9.8
350 ±
35.7 ±
9.8500 ±
151 ± 1
9.8
14.5 ± 1 143 ± 9.8
143 ±
14.5 ±
9.8143 ±
114.5 ± 1
9.8
196 ±
20 ± 120
9.8196 ±
± 1
9.8
lb. ft.
10 ± 124 ±
2.647 ±
4.880 ±
8127 ± 13
198 ±
22270 ±
26387 ±
42531 ±
59668 ± 72
980 ±
1031336 ±
140
lb. ft.
145 ±
7.4145 ±
7.4
258 ±
7.4369 ±
7.4
106 ± 7.4
106 ±
7.4106 ±
7.4
145 ±
7.4145 ±
7.4
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