Table of Contents
Group 1 SY550C1I3KH hydraulic excavator body 1-1
SY550C1I3KH hydraulic excavator body 1-2
Group 2 Slewing device 2-1
Slewing device 2-2
Cab assembly 2-4
seat and control cabinet 2-6
60204190 Armrest Box 2-8
61000961 Cab Seat 2-10
60204189 Armrest Box 2-12
Bottom board rack of cab 2-14
Running Control Mechanism 2-16
60344949 Cab Assembly 2-18
13069429 Interior Trim Installation 2-38
13471741 electric system 2-46
13036476 Electric system, cab 2-48
13471739 harness system 2-56
13036704 Electric System, Cab 2-58
11162034 Skylight Assembly 2-60
11181278 Front Window Assembly 2-62
13826859 Door assembly 2-64
SSY004596716 Cab front guard mesh assembly 2-66
12051215 Rearview Mirror Bracket Assembly-22 2-68
Swing Mechanism 2-70
13946509 Slewing Bearing 2-72
Air conditioning system 2-74
Electrical systems for air conditioning 2-78
60168171 Evaporator 2-80
The guide line 2-82
PPC Pipeline. 2-84
Left Handle Assembly 2-90
Right Handle Assembly 2-92
150505010037A Pilot Valve 2-94
150505020015A Pilot Valve 2-96
Pipeline of Main Valve Frame and Electromagnetic Valve 2-102
60321021 Valve Group 2-112
Pilot pipeline of Main Pump 2-114
B229900000063 High Pressure Filter 2-120
Plate Hydraulic System 2-122
13510936 Hydraulic Oil Tank 2-124
12353451 Filter Element 2-126

60251436 Oil Suction Filter 2-128
Pump Chamber LIne 2-130
60355586 Composite Pump Assembly 2-134
60319637 Regulator 2-142
61016283 Open Plunger Pump 2-144
Platform main road 2-146
Drain pipeline 2-154
Main Valve Frame 2-160
Radiator Installation 2-162
150204010011A Gear Motor 2-164
60129702 Breathing Valve 2-166
60242783 Hydraulic ydraulic control multi-way valve 2-168
JSJ004713521 Gear Box 2-178
14194158 Planet Carrier Ii Assembly 2-180
14190471 planetary shaft component 2-182
14193897 Planetary carrier assemblyⅠ 2-184
60201949 Motor, Piston 2-186
Cover Assembly 2-188
Rigt door 2-190
Back board of engine compartment 2-192
Clapboard Assembly 2-194
bottom cover plate assembly 2-196
Cabin for radiator 2-198
13306843 Assembly of Bumper Block 2-200
Left Rear Door Assembly 2-202
Air Filter Cabin 2-204
13306843 Assembly of Bumper Block 2-206
front board of engine compartment 2-208
Clapboard Assembly 2-210
Cover Plate for Fueling Tank 2-212
Hydraulic Oil Tank Cover Plate Assembly 2-214
Main pump cabin 2-216
Main Pump Cabin Framework 2-218
Main Pump Upper Partition Plate 2-220
13306843 Assembly of Bumper Block 2-222
13901362 Left Front Door Assembly 2-224
13306198 Engine Cover Assembly 2-226
13306105 Mounting Rack Assembly 2-228
13306189 Engine Cover 2-230
13306069 Radiator Hood Assembly 2-232
13304821 Air Filter Cover Plate Assembly 2-234
13915826 Toolbox Assembly 2-236
Battery protective assembly 2-238
14094233 Armrest Assembly 2-240
13556376 Rearview Mirror Bracket 2-242
Power System 2-244

Cooling system 2-246
60250328 Radiator 2-248
Damping and transmission system 2-250
Exhaust System 2-252
60250310 Muffler 2-254
fuel system 2-256
13548761 Fuel Tank Assembly 2-264
60249071 Oil-water Separator 2-266
60018583 Fuel Pump Assembly 2-268
60205949 Fuel Filter 2-270
Intake System 2-272
160601000020A Air Cleaner&Air Prefilter 2-276
60241870 Air Filter 2-278
Group 3 walking device 3-1
SSY005237053 walking device 3-2
Carrier Hydraulic System 3-6
Swing joint Assembly 3-8
60249405 Slewing Joint 3-10
130101010213A Reducer Drive Assembly 3-12
130101010213A001 Gearbox 3-14
130101010213A002 Hydraulic Motor 3-16
11163607 Seal Module 3-20
60332169 Tension Device 3-22
13734866 Track Assembly 3-24
Group 4 Work device assembly 4-1
Work device assembly 4-2
Working device pipeline 4-6
Left derrick oil cylinder assembly 4-8
150901040649B Oil Cylinder 4-10
Right moveable boom oil cylinder assembly 4-12
150901040649B Oil Cylinder 4-14
bucket rod cylinder assembly 4-16
150901040650B Oil Cylinder 4-18
Bucket cylinder assembly 4-20
150901040654B Oil Cylinder 4-22
Lubricating circuit 4-24
SSY004894921 Boom (7m) subassembly assembly 4-26
SSY004687692 ARM(2.5m) subassembly assembly 4-28
SSY004688404 Link(0.74m) subassembly assembly 4-30
Group 5 electrical system 5-1
electrical system. 5-2
Cab Harness Assembly（R） 5-4
Electric cabinet assembly 5-6

13416828 Distribution Box 5-8
assemble 5-10
assemble 5-12
boom harness assemble 5-16
assembly of electric control box 5-18
13271327 Integrated box 5-20
Group 6 Coating 6-1
Coating 6-2
Group 7 Crushing hammer pipaline. 7-1
SSY004714476 Crushing hammer pipaline 7-2
Crushing hammer working device pipeline 7-4
SSY004711831 Crushing hammer platform pipeline 7-8
60197320 Oil Return Filter 7-12
150501020060A Relief Valve 7-14
Group 8 Accessories 8-1
Accessories 8-2
10567878 Attached Tools 8-6
A290000000155 Portable Toolbox 8-10

1 Slewing device 1 2-2

2 SSY005237053 walking device 1 3-2

3 Work device assembly 1 4-2

4 electrical system 1 5-2

5 Coating 1 6-2

6 SSY004714476 Crushing hammer pipaline 1 7-2

7 Accessories 1 8-2

8 SSY004702743 Revolving Frame 1
9 A210111000101 Bolt 2
10 24000639 Washer 2
11 A820101117871 Cover 1
12 A820606030364 Gasket 1
13 21021304 Bolt 8
14 13354544 Sleeve 8
15 SSY005158112 Counterweight assembly 1

1 seat and control cabinet 1
2 Bottom board rack of cab 1
3 Running Control Mechanism 1
4 A229900010630 Feet-level Air Vent 1
5 13399928 Supporting Lever 2
6 A810299000007 Pedal 2
7 60228208 Rearview Mirror 1
8 13298857 Front Bracket of Electrical Equipment Plate 1
9 60344949 Cab Assembly 1
10 A210204000340 Screw 7
11 14004107 Vertical Plate 1
12 A210264000004 Self-tapping Screw 1
13 24000511 Spring Washer 3
14 SSY004596716 Cab front guard mesh assembly 1
15 12051215 Rearview Mirror Bracket Assembly-22 1
16 A820606030112 Rubber Sleeve 2
17 60060564 Spring Shim 3
18 13791387 Car Body Driver’S Cab Top Guard Net 1
19 24000632 Washer 3
20 24000633 Washer 7
21 60249819 Screw 3

1 60204190 Armrest Box 1 2-8

2 60313916 Seat Right Guide Rail 1
3 61000961 Cab Seat 1 2-10

4 10115295 Seat upper base frame 1
5 13298845 Seat Lower Base Frame 1
6 10241175 Air Duct Connection Flange 1
7 10140450 Front Cover 1
8 24000632 Washer 4
9 24000511 Spring Washer 4
10 60060565 Washer 12
11 24000633 Washer 4
12 60238783 Washer 2
13 24000637 Washer 8
14 60313915 Seat Left Guide Rail 1
15 60204189 Armrest Box 1 2-12

16 B229900000494 Seat Tie Rod 1
17 60240844 Control Panel 1
18 A210111000012 Bolt 8
19 A210111000089 Bolt 4
20 A210111000079 Bolt 6
21 10115283 Supporting Flat Plat 1
22 A210307000055 Nut 4
23 A210111000342 Bolt 4
24 A210204000340 Screw 4
25 A210204000164 Screw 4