MAINTENANCE
7-88
17
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.
For tightening nuts and bolts other than specified in
the table below, refer to the Tightening Torque Chart
at the end of this section.
IMPORTANT: Check and tighten bolts and nuts us-
ing a torque wrench.
ZX280LC-3, 280LCN-3
No.
Descriptions
Bolt Dia
Q’ty
Wrench
Size
Torque
mm
mm
N•m
(kgf•m)
1
Engine cushion rubber mounting bolt and nut (Pump side)
18
4
27
400
(40)
Engine cushion rubber mounting bolt and nut (Fan side)
14
4
22
180
(18)
2
Engine bracket mounting bolt (Pump side)
16
8
24
270
(27)
Engine bracket mounting bolt (Fan side)
10
8
17
65
(6.5)
3
Hydraulic oil tank mounting bolt
18
4
27
400
(40)
4
Fuel tank mounting bolt
20
4
30
550
(55)
5
Radiator mounting bolt (Upper side)
16
4
24
210
(21)
Radiator mounting bolt (Lower side)
16
3
24
270
(27)
6
Pump transmission mounting bolt
10
8
17
65
(6.5)
7
Control valve mounting bolt
16
4
24
210
(21)
Control valve bracket mounting bolt
16
4
24
270
(27)
8
Swing device mounting bolt
22
14
32
650
(65)
9
Swing motor mounting bolt
12
8
10
90
(9)
10
ORS fittings for hydraulic hoses and piping
17
25
(2.5)
19
30
(3)
22
40
(4)
27
95
(9.5)
32
140
(14)
36
180
(18)
41
210
(21)
11
Hycolin tube mounting nut
–
–
17
35
(3.5)
12
Battery mounting nut
10
4
17
25
(2.5)
13
Cab mounting nut
16
4
24
210
(21)
Cab mounting anchor bolt
22
2
32
550
(55)
Cab cushion rubber mounting bolt
12
8
19
110
(11)
14
Cover mounting bolt
6
–
10
10
(1)
8
–
13
10
(1)
10
–
17
50
(5)
15
Flexible master coupling of piping
8
1/4-28UNF
4 pairs
13
11 to 13
(1.1 to1.3)
11
6
(0.6)
Jubilee clamp of low pressure piping
9
7
6
(0.6)
4
8
6
(0.6)
T-bolt clamp of low pressure piping
9
10
6
(0.6)
16
Swing bearing mounting bolt
(Upperstructure)
22
35
32
650
(65)
(Undercarriage)
22
36
32
650
(65)
17
Travel device mounting bolt
20
40
30
630
(63)
Travel reduction device cover mounting bolt
14
12
22
180
(18)
Sprocket mounting bolt
20
48
30
550
(55)
18
Upper roller mounting bolt
18
16
27
460
(46)
19
Lower roller mounting bolt
22
64
32
840
(84)
20
Track shoe mounting bolt
22
384
32
1160
(116)
21
Track guard mounting bolt
22
8
32
750
(75)
Summary of Contents for ZAXIS 120-3 class
Page 1: ......
Page 3: ......
Page 5: ......
Page 49: ...SAFETY SIGNS Europe Asia Middle and Near East Model Only S 38 MEMO ...
Page 131: ...BREAK IN 2 MEMO ...
Page 191: ...TRANSPORTING 6 MEMO ...
Page 290: ...HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT 8 HYDRAULIC CIRCUIT M1V1 08 001 ...
Page 292: ...8 ELECTRICAL DIAGRAM ...
Page 293: ...HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT 8 MEMO ...
Page 295: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 MEMO ...
Page 351: ...SPECIFICATIONS 12 42 MEMO ...
Page 455: ...OPTIONAL ATTACHMENTS AND DEVICES 13 104 MEMO ...
Page 461: ...INDEX 14 MEMO ...