MAINTENANCE
7-109
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 using a
torque wrench.
ZX450LC
-3
No
Descriptions
Bolt Dia
Q’ty
Wrench
Size (mm) LOCTITE
Torque
mm
N•m
(kgf•m) (lbf•ft)
1
Engine cushion
rubber mount-
ing bolt
Fan side
27
2
41
*
1050
(105)
(770)
Pump Side
Engine - Cushion
rubber
22
2
32
750
(75)
(550)
Cushion rubber
- Machine
18
4
27
400
(40)
(295)
2 Engine bracket mounting bolt
14
8
22
*
210
(21)
(155)
3 Radiator mounting bolt
20
4
30
*
550
(55)
(405)
4 Oil cooler mounting bolt
5 Hydraulic oil tank mounting bolt
16
8
24
*
210
(21)
(155)
6 Fuel tank mounting bolt
16
8
24
*
210
(21)
(155)
7 ORS fittings for hydraulic hoses and piping
3
1 – — –12UNF
16
7
1 – — –12UNF
16
36
41
180
210
(18)
(21)
(135)
(155)
8 Pump Transmission mounting bolt
(not required)
9 Pump device mounting bolt
12
10
19
*
90
(9)
(66)
10 Fan pump mounting bolt
16
4
H
14
230
(23)
(170)
11 Fan motor mounting bolt
12
2
19
110
(11)
(80)
12 Control valve mounting bolt
20
4
30
*
400
(40)
(295)
13 Control valve bracket mounting bolt
20
6
30
*
400
(40)
(295)
14 Swing device mounting bolt
22
26
32
750
(75)
(550)
15 Swing motor mounting bolt
18
24
H
14
300
(30)
(220)
16 Battery mounting nut
12
2
19
35
(3.5)
(26)
17 Cab mounting nut
16
6
24
210
(21)
(155)
18 Cab anchor mounting bolt
22
2
32
550
(55)
(405)
19 Swing bearing mounting bolt to upper structure
Swing bearing mounting bolt to undercarriage
30
27
36
36
46
41
1950
1400
(195)
(140)
(1440)
(1030)
20
Travel device mounting bolt
22
40
32
750
(75)
(550)
Travel motor mounting bolt
18
8
27
300
(30)
(220)
Sprocket mounting bolt
22
48
32
750
(75)
(550)
21 Upper roller mounting bolt
18
24
27
400
(41)
(295)
16
Содержание ZAXIS 450LC-3
Страница 1: ...Serial No 020001 and up Hydraulic Excavator PART NO EM1J3 NA1 2 450LC 3 650LC 3 850LC 3 ...
Страница 2: ... ...
Страница 4: ......
Страница 45: ...SAFETY SIGNS S 33 SS 862 SS 863 SS 859 1 2 3 ...
Страница 46: ...SAFETY SIGNS S 34 SS3106039 SS3092349 SS 408 4 5 6 ...
Страница 48: ...SAFETY SIGNS S 36 SS 024 SS 710 SS3089713 10 11 12 ...
Страница 136: ...OPERATOR S STATION 1 88 MEMO ...
Страница 138: ...BREAK IN 2 MEMO ...
Страница 150: ...OPERATING THE ENGINE 3 12 MEMO ...
Страница 270: ...TRANSPORTING 6 78 MEMO ...
Страница 406: ...MAINTENANCE 7 136 M1J1 07 083 33 Retighten air compressor mounting bolts ...
Страница 408: ...MAINTENANCE 7 138 MEMO ...
Страница 410: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 MEMO ...
Страница 438: ...SPECIFICATIONS 12 14 MEMO ...
Страница 470: ...OPTIONAL ATTACHMENTS AND DEVICES 13 32 MEMO ...
Страница 474: ...INDEX 14 MEMO ...
Страница 476: ...URL http www hitachi c m com This book is printed on recycled paper PRINTED IN JAPAN E 2011 12 ...