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Check Tightening Torque of Bolts and Nuts
--- every 250 hours (first time after 50 hours)
Check tightness after the first 50 hours then every 250
hours. Tighten to torque shown if any are loose. Bolts and
nuts should be replaced with those of the same or higher
grade.
IMPORTANT: Check and tighten bolts and nuts using a
torque wrench.
Torque Specifications
No.
1
(Flywheel housing side)
2
Engine bracket mounting bolt (Fan side)
3
4
5
6
Pump mounting bolt (Fan pump)
7
8
9
10
11
12
13
14
Swing bearing mounting bolt (Track)
15
16
17
18
19
20
21
22
23
24
Travel device mounting bolt (B)
Travel device mounting bolt (C)
25
Sproket mounting bolt
26
27
28
29
Front pin-retaining bolt (Loader)
Front pin-retaining bolt (Loader)
30
Front pin-retaining bolt (Backhoe)
Descriptions
MAINTENANCE
Bolt Dia
Q'ty
(mm)
36
6
27
12
20
10
30
8
15
30
16
12
20
12
20
4
12
4
16
12
33
48
20
8
10
16
18
10
16
40
45
58
45
60
45
6
30
20
27
4
27
4
16
4
12
6
20
8
20
25
30
64
22
32
33
64
30
60
30
30
30
12
33
392
45
68
20
32
16
4
24
4
20
24
16
12
7-113
Wrench
Size (mm)
N m
55
3140
41
1030
30
390
46
1420
46
1420
19
88
540
30
540
17
88
19
24
265
50
2550
30
390
17
49
27
295
24
265
70
4700
70
4700
75
3920
30
1420
41
1370
41
1370
24
205
19
88
30
390
30
390
46
1910
32
740
50
2550
46
1910
46
1910
46
1910
50
3190
70
4710
30
390
24
205
36
690
30
390
24
205
Torque
)
)
(kgf m
(lbf ft
(320)
(2320)
(105)
(760)
(40)
(290)
(145)
(1050)
(145)
(1050)
(9)
(65)
(55)
(400)
(55)
(400)
(9)
(65)
(27)
(195)
(260)
(1880)
(40)
(290)
(5)
(36)
(30)
(220)
(27)
(195)
(480)
(3470)
(480)
(3470)
(400)
(2890)
(145)
(1050)
(140)
(1010)
(140)
(1010)
(21)
(152)
(9)
(65)
(40)
(290)
(40)
(290)
(195)
(1410)
(75)
(540)
(260)
(1880)
(195)
(1410)
(195)
(1410)
(195)
(1410)
(325)
(2350)
(480)
(3470)
(40)
(290)
(21)
(152)
(70)
(510)
(40)
(290)
(21)
(152)
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