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BOLT AND NUT INSPECTION
Inspect ALL fasteners after the first 50 hours of operation and
every 250 hours thereafter. If any are loose or are missing
tighten them or install new hardware. Always use a calibrated
torque wrench.
IMPORTANT
Always clean fasteners before tightening.
If counterweight is loose, contact a DOOSAN distributor or
sales agent.
.
NO.
POINT TO BE INSPECTED
Joint bolt with engine
1
mounting bracket and
engine
Joint bolt and nut
2
between engine mount-
ing bracket and frame
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Bolt for track shoes
Inspection, Maintenance and Adjustment
BOLT
DIA.
mm
pump side
12
fan side
22
pump side
24
fan side
24
16
20
20
12
20
24
16
10
10
16
30
30
24
24
pump side
20
20
24
24
24
BOLT
QTY.
HEAD
kg•m
SIZE
1
19
10.5
8
32
75
2
36
91
2
36
91
4
24
27
6
30
55
6
30
55
4/8
19
11/9
4
30
55
24
36
95
4
14
27
2
17
5
20
17
6.5
5
24
21
45
46
176
48
46
182
44
36
90
44
36
90
24
30
53
24
30
53
64
36
90
64
36
90
64
36
191
TORQUE
Nm
ft lb
103
76
735
542
892
658
892
658
265
195
539
398
539
398
108/88
80/65
539
398
932
687
265
195
49
36
64
47
206
152
1726
1273
1785
1316
883
651
883
651
520
383
520
383
883
651
883
651
1874
1381
OP001123
4-61
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