4-61
Inspection, Maintenance and Adjustment
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
BOLT
DIA.
mm
QTY.
BOLT
HEAD
SIZE
TORQUE
kg•m
Nm
ft lb
1
Joint bolt with engine
mounting bracket and
engine
pump side
12
1
19
10.5
103
76
fan side
22
8
32
75
735
542
2
Joint bolt and nut
between engine mount-
ing bracket and frame
pump side
24
2
36
91
892
658
fan side
24
2
36
91
892
658
3
Radiator mounting bolt
16
4
24
27
265
195
4
Tightening bolt for hydraulic oil tank
20
6
30
55
539
398
5
Tightening bolt for fuel tank
20
6
30
55
539
398
6
Tightening bolt for pump
12
4/8
19
11/9
108/88
80/65
7
Tightening bolt for control valve
20
4
30
55
539
398
8
Tightening bolt for swing reduction device
24
24
36
95
932
687
9
Tightening bolt for swing motor
16
4
14
27
265
195
10
Tightening bolt for battery
10
2
17
5
49
36
11
Joint bolt with cabin mounting rubber and
frame
10
20
17
6.5
64
47
Joint bolt with cabin mounting rubber and
cabin
16
5
24
21
206
152
12
Joint bolt with swing bearing and upper
frame
30
45
46
176
1726
1273
Joint bolt with swing bearing and bottom
frame
30
48
46
182
1785
1316
13
Tightening bolt for travel device
24
44
36
90
883
651
Tightening bolt for sprocket
24
44
36
90
883
651
14
Tightening bolt for upper
roller
pump side
20
24
30
53
520
383
flange side
20
24
30
53
520
383
15
Tightening bolt for bottom roller
24
64
36
90
883
651
16
Tightening bolt for track guard
24
64
36
90
883
651
17
Bolt for track shoes
24
64
36
191
1874
1381
Summary of Contents for DX700LC
Page 2: ......
Page 72: ...OP001120 Safety 1 66 ...
Page 142: ...OP001121 Operating Controls 2 70 ...
Page 188: ...OP001122 Operation 3 46 ...
Page 197: ...OP001123 4 9 Inspection Maintenance and Adjustment ...
Page 282: ...OP001123 Inspection Maintenance and Adjustment 4 94 ...
Page 298: ...OP000030 Troubleshooting 6 6 ...
Page 301: ...OP001125 7 3 Specification ...
Page 308: ...OP001125 Specification 7 10 ...
Page 314: ...950106 00012E Index 8 6 ...