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ZX48U-5A, 55U-5A
No.
Descriptions
1.
Engine cushion rubber mounting bolt
2.
Engine bracket mounting bolt (Front)
3.
Hydraulic oil tank mounting bolt
4.
Fuel tank mounting nut
Union joints for
5.
hydraulic hoses and
pipes
6.
Pump mounting bolt
7.
Pump cover mounting bolt
Control valve mounting bolt
8.
Control valve base mounting bolt
9.
Swing device mounting bolt
10.
Battery mounting nut
11.
Canopy mounting bolt
12.
Cab mounting bolt
Swing bearing
13.
mounting bolt
14.
Travel device mounting bolt
15.
Sprocket mounting bolt
16.
Upper roller mounting bolt
17.
Lower roller mounting bolt
18.
Cover mounting bolt
19.
Counterweight mounting bolt
20.
Front pin lock bolts
21.
Side-cutter mounting bolt
22.
Track roller guard mounting bolt
IMPORTANT:
Before installing, clean the bolt and nut threads to remove soil, rust, and/or dust.
When installing new bolts and/or nuts, apply lubricant (e.g. white zinc B dissolved into spindle oil) to the
screw threads.
Tighten bolts and nuts to the specifications. If tightened with excessively high or low torque, missing or
breakage of bolts and/or nut may result.
In case the counterweight mounting bolts became loose, consult your authorized dealer for retightening.
MAINTENANCE
7/16-20UNF
Metal face
9/16-18UNF
seal fitting for
hydraulic hoses
1-1/16-12UNF
and piping
1-5/16-12UNF
ORS
2 Poles
4 Poles
Upperstructure
Undercarriage
Bolt Dia.
Q'ty
mm
14
4
10
8
12
4
10
4
3/4-16UNF
9/16 UNF
11/16 UNF
13/16 UNF
12
2
10
8
10
4
10
4
16
8
6
4
16
4
12
11
12
5
12
27
12
24
14
24
14
24
16
2
16
16
6
8
10
24
3
10
12
14
16
18
14
6
16
12
7-98
Wrench Size
N·m
mm
22
140
17
50
19
110
17
20
17
25
19
30
22
40
27
65
36
18
41
210
19
30
22
70
27
95
10 (Socket)
90
17
50
17
50
17
50
24
270
10
5
24
270
19
110
19
110
19
110
19
110
22
180
22
180
24
270
24
270
10
5
13
10
17
50
36
930
17
50
19
90
22
140
24
210
27
400
22
180
24
270
Torque
(kgf∙m)
(lbf·ft)
(14)
(101)
(5)
(36)
(11)
(80)
(2)
(15)
(2.5)
(18)
(3)
(22)
(4)
(29)
(6.5)
(47)
(18)
(129)
(21)
(151)
(3)
(22)
(7)
(52)
(9.5)
(69)
(9)
(65)
(5)
(36)
(5)
(36)
(5)
(36)
(27)
(195)
(0.5)
(3.5)
(27)
(195)
(11)
(80)
(11)
(80)
(11)
(80)
(11)
(80)
(18)
(130)
(18)
(130)
(27)
(199)
(27)
(195)
(0.5)
(3.5)
(1)
(7)
(5)
(36)
(93)
(690)
(5)
(36)
(9)
(65)
(14)
(101)
(21)
(152)
(40)
(290)
(18)
(130)
(27)
(196)
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