GENERAL / Tightening
W1-2-1
TIGHTENING TORQUE SPECIFICATION
Torque
No.
Descriptions
Bolt Dia
(mm)
Qty
Wrench
Size (mm)
N m
(kgf m
)
(lbf ft
)
1
Engine cushion rubber mounting bolt
36
20
55
3200
(320)
(2360)
33
32
50
1950
(195)
(1440)
20
64
30
550
(55)
(410)
2
Engine bracket mounting bolt
a
b
c
22
12
32
750
(75)
(550)
3
Pump transmission mounting bolt
12
32
19
110
(11)
(81)
Pump mounting bolt (Main pump)
24
32
36
950
(95)
(700)
4
Pump mounting bolt (Fan pump)
20
8
30
550
(55)
(410)
5
Gear pump mounting bolt
14
14
22
140
(14)
(103)
6
Hydraulic oil tank mounting bolt
36
18
55
3200
(320)
(2360)
7
Fuel tank mounting bolt
36
30
55
3200
(320)
(2360)
8
Control valve mounting bolt
20
24
30
400
(40)
(295)
Swing device mounting bolt (A)
36
72
55
3200
(320)
(2360)
9
Swing device mounting bolt (B)
24
144
36
950
(95)
(700)
10
Swing motor mounting bolt
20
24
30
400
(40)
(295)
11
Cab mounting bolt
18
17
27
300
(30)
(220)
12
Cab cushion rubber mounting bolt
12
68
19
110
(11)
(81)
13
Cab bed spacer mounting bolt
14
52
22
180
(18)
(135)
14
Cab bed mounting bolt
14
52
22
180
(18)
(135)
15
Battery mounting bolt
10
32
17
20
(2.0)
(15.0)
16
Folding stairway mounting bolt
20
12
30
550
(55)
(410)
17
Radiator mounting bolt
27
16
41
1400
(140)
(1030)
18
Oil cooler mounting bolt
27
12
41
1400
(140)
(1030)
19
Engine bed mounting bolt
42
78
65
5100
(510)
(3760)
Swing bearing mounting bolt (Upperstructure)
56
68
85
9800
(980)
(7230)
20
Swing bearing mounting bolt (Track)
56
94
85
9800
(980)
(7230)
Counterweight mounting bolt (Main weight)
56
20
85
6900
(690)
(5060)
21
Counterweight mounting bolt (Sub weight)
56
8
85
6900
(690)
(5060)
Travel device mounting bolt (A)
42
24
65
5100
(510)
(3760)
Travel device mounting bolt (B)
64
64
95
13000
(1300)
(9410)
Travel device mounting bolt (C)
24
48
36
700
(70)
(520)
22
Travel device mounting bolt (D)
20
50
30
400
(40)
(295)
23
Travel motor mounting bolt
22
16
32
750
(75)
(550)
Upper roller mounting bolt
32
24
56
3200
(320)
(2360)
24
Upper slider mounting bolt (Optional)
39
24
60
3900
(390)
(2880)
25
Lower roller mounting bolt
64
56
95
13000
(1300)
(9410)
26
Track pin-retaining bolt
30
156
46
1950
(195)
(1440)
27
Side frame mounting bolt
72
84
105
18000
(1800)
(13030)
Front pin-retaining bolt (A)
24
12
36
950
(95)
(700)
Front pin-retaining bolt (B)
24
28
36
950
(95)
(700)
Front pin-retaining bolt (C)
20
8
30
550
(55)
(410)
Front pin-retaining bolt (D)
20
72
30
550
(55)
(410)
28
Front pin-retaining bolt (E)
27
12
19
1050
(105)
(770)
Valve block mounting bolt (on the boom)
24
8
36
950
(95)
(700)
29
Valve block mounting bolt (under the boom)
20
4
36
950
(95)
(700)
NOTE:
: Hexagonal socket wrench.
Tightening Torque Chart
