OP000530
Inspection, Maintenance and Adjustment
4-64
INSPECTION OF BOLT AND NUT
TIGHTENING ELEMENTS
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
N•m
ft lb
1
Joint Bolt with Engine Mounting
Bracket and Engine
Pump Side
16
8
24
27
264
195
Fan Side
10
8
17
6.5
64
47
2
Joint Bolt & Nut Between Engine
Mounting Bracket and Frame
Pump Side
20
2
30
46
451
333
Fan Side
20
2
30
46
451
333
3
16
4
24
27
264
195
4
Tightening Bolt for Hydraulic Oil Tank
16
4
24
27
264
195
5
16
4
24
27
264
195
6
10
12
17
6.5
64
47
7
Tightening Bolt for Control Valve
12
4
19
11
108
80
8
Tightening Bolt for Swing Reduction Device
20
11
30
55
539
398
9
Tightening Bolt for Swing Motor
12
16
10
14.4
141
104
10
10
2
17
6.5
64
47
11
Joint Bolt with Cab Mounting Rubber and
Frame
10
20
17
6.5
64
47
Joint Bolt with Cab Mounting Rubber and Cab
16
3
24
21
206
152
12
Joint Bolt with Swing Bearing and Upper
Frame
20
36
30
55
539
398
Joint Bolt with Swing Bearing and Bottom
Frame
20
36
30
55
539
398
13
24
8
36
95
929
686
14
Tightening Bolt for Propeller Shaft
10
32
14
7
69
51
15
Tightening Bolt for Travel Motor
16
4
14
27
265
195
16
Tightening Bolt for Ram Cylinder
24
4
20
95
929
686
17
Tightening Bolt for Center Joint
12
4
19
11
108
80
18
22
40
32
55~60
539~588 400~434
19
16
9
24
27
265
195
20
Breaker Filter (Optional)
12
4
19
11
108
80
21
Tightening Bolt for Lower
Attachment
Front
24
14
36
95
929
686
Rear
24
20
36
95
929
686
Summary of Contents for DX190W
Page 2: ......
Page 71: ...OP000528 2 3 Operating Controls ...
Page 128: ...OP000528 Operating Controls 2 60 CD Player Optional AST DIR FG000109 Figure 135 ...
Page 196: ......
Page 292: ...OP000530 Inspection Maintenance and Adjustment 4 96 ...
Page 304: ...OP000440 6 8 Troubleshooting ...