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Tightening and Retightening Torque of Nuts and
Bolts
--- every 250 hours (50 hours at first time only)
Tighten or retighten nuts and bolts used on this machine in
accordance with the torque values shown in the following
table. Check nuts and bolts for looseness and missing daily
before and after operation. If any loose or missing nuts and/or
bolts are found , retighten or supply replacement parts. Check
tightness after the first 50 hours then every 250 hours. The
nuts and bolts other than those shown in the table below shall
be tightened in accordance with the torque values shown in
the table on page 7-104.
No.
Locations
f
NOTE: * Apply "LOCTITE® 262" to the threads.
Figures with ** mark are shown in Inch.
MAINTENANCE
Bolt Dia
Q'ty
20
8
Front
20
4
Rear
20
4
24
48
10
20
16
2
16
4
16
8
16
4
16/12
2/4
12
8
12/16
8/4
16
4
8/10/12
16/4/2
24
4
12
1
24
1
12/16
10/3
12
4
12/16
4/4
8
4
8
2
10
4
10
4
8
4
16
4
**1''
7
7-103
Wrench
Torque
Size
N·m
(kgf·m)
30
509
(51)
30
509
(51)
30
509
(51)
36
890
(89)
14
65
(6.5)
24
210
(21.0)
24
230
(23.0)
(17.5) to
24
176 to 225
(22.5)
14
230
(23.0)
24/17
210/90
(21.0)/(9.0) (155)/(66)
19
*90
(9.0)
19/24
*90/210
(21.0)
24
210
(21.0)
(2.0)/(5.0)/
13/17/19
20/50/90
(9.0)
36
782
(78)
19
90
(9.0)
36
*782
(78)
19/24
90/210
(9.0)/(21.0) (66)/(155)
19
90
(9.0)
19
90
(9.0)
13
17.6
(1.8)
13
17.6
(1.8)
17
36.2
(3.6)
17
50
(5.0)
(2.5) to
6
25 to 30
(3.0)
24
*205
(20.5)
11/2
1068
(107)
(lbf·ft)
(380)
(380)
(380)
(660)
(48)
(155)
(170)
(130) to
(166)
(170)
(66)
(155)
(155)
(15.0)/
(37)/(66)
(580)
(66)
(580)
(66)
(66)
(13.0)
(13.0)
(26.5)
(37)
(18.5) to
(22.0)
(151)
(790)
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