Komatsu WA500-6H Operation & Maintenance Manual page 274

4.5 Standard tightening torques for bolts and nuts
Torque list
Apply the following table for hydraulic hose.
Taper seal
Thread diameter (a)
(mm)
10
14
18
22
24
30
33
Face seal
Nominal - No. of
threads (a)
9/16 -18UNF
11/16 -16UN
13/16 -16UN
1 -14UNS
13/16 -12UN
4-20
Width
across
Target value
flats (b)
(mm)
N·m kgf·m
14 14.7 1.5
19 29.4 3.0
24 78.5 8.0
27 117.7 12.0
32 147.1 15.0
36 215.7 22.0
41 255.0 26.0
Width
across
Target value
flats (b)
(mm)
N·m kgf·m
19 44 4.5
22 74 7.5
27 103 10.5
32 157 16.0
36 216 22.0
Tightening torque
lbft N·m
10.8 12.7 - 16.7
21.7 27.5 - 39.2
57.9 58.8 - 98.1
86.6 88.3 - 137.3
108.5 117.7 - 176.5
159.1 176.5 - 245.2
188.1 215.7 - 284.4
Tightening torque
lbft N·m
32.5 35 - 63
54.2 54 - 93
75.9 84 - 132
115.7 128 - 186
159.1 177 - 245
Maintenance
Permissible range
kgf·m lbft
1.3 - 1.7 9.4 - 12.3
2.8 - 4.0 20.3 - 28.9
6.0 - 10.0 43.4 - 72.3
9.0 - 14.0 65.1 - 101.3
12.0 - 18.0 86.8 - 130.2
18.0 - 25.0 130.2 - 180.8
22.0 - 29.0 159.1 - 209.8
Permissible range
kgf·m lbft
3.5 - 6.5 25.3 - 47.0
5.5 - 9.5 39.8 - 68.7
8.5 - 13.5 61.5 - 97.6
13.0 - 19.0 94.0 - 137.4
18.0 - 25.0 130.2 - 180.8
WA500-6H – VEAM430100
GK050182
GK032237