Content .. 4 5 6 7 ..

SANY Crawler Hydraulic Excavator SY365H-9, SY365BH-9. Shop Manual (2014) - page 6

1-9

Speci

cations

SY365(B)H-9 Crawler Hydraulic Excavator

3.5 Engine Performance Curves

AA-6HK1XQP-01

Test condition:

1. Temperature 298K, one standard atmospheric pressure.

2. Maximum output power: 183.9KW (with fan); 190.5KW (without fan)

100

150

200

650

750

850

950

1050

180

200

220

240

260

280

800

1000

1200

1400

1600

1800

2000

2200

2400

-1

W36531305

Max torque

872.8 or more /approx.1700 min
(872.8/approx.1700 min )

Rate of fuel consumption

(Max output power)

236.6 g/kWh or less

236.6 g/kWh)

Max speed without load

2275±25 min
(22502300min )

Max output power

183.9±2.9 kW/2000 min
(181.0186.8kW/2000min )

Fig. 3-3

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4-1

4 Structure and Functions

4.1 Engine and Cooling System ................................................................................... 4-5

4.1.1 Engine-related parts....................................................................................... 4-5
4.1.2 Radiator and intercooler................................................................................. 4-6

4.2 Power Train.............................................................................................................. 4-7

4.2.1 Overview ........................................................................................................ 4-7
4.2.2 Travel reducer AS ......................................................................................... 4-8
4.2.3 Swing reducer mechanism........................................................................... 4-10
4.2.4 Swing bearing .............................................................................................. 4-12

4.3 Undercarriage Travel System ............................................................................... 4-14

4.3.1  Track frame and tensioning mechanism ...................................................... 4-14
4.3.2 Idler .............................................................................................................. 4-16
4.3.3 Carrier roller ................................................................................................. 4-18
4.3.4 Track roller ................................................................................................... 4-19
4.3.5 Track  ........................................................................................................... 4-20
4.3.6  Tri-grouser track shoe .................................................................................. 4-23

4.4 Hydraulic System, Part 1 ....................................................................................... 4-24

4.4.1 Deployment of hydraulic parts ..................................................................... 4-24
4.4.2 Hydraulic tank and

lter ............................................................................... 4-26

4.4.3 Hydraulic pump ............................................................................................ 4-28

4.4.3.1 Outline ................................................................................................. 4-29
4.4.3.2 Function .............................................................................................. 4-31
4.4.3.3 Structure ............................................................................................. 4-31
4.4.3.4 Operating principle .............................................................................. 4-32

Structure and Functions

4-2

SY365(B)H-9 Crawler Hydraulic Excavator

4.4.3.5 Oil delivery control .............................................................................. 4-33

4.4.4 Pilot pump .................................................................................................... 4-34
4.4.5 Regulator .................................................................................................... 4-35

4.5 Hydraulic system, Part 2 ........................................................................................ 4-48

4.5.1 Main control valve ........................................................................................ 4-48

4.5.1.1 Overview ............................................................................................ 4-48
4.5.1.2 Main valve structure ............................................................................ 4-50

4.5.2 Hydraulic circuit

(With bucket con

uence function) .............................................. 4-56

4.6 Hydraulic System, Part 3 ....................................................................................... 4-79

4.6.1 Swing motor ................................................................................................. 4-79
4.6.2 Swing holding brake..................................................................................... 4-81
4.6.3 Relief valve section ...................................................................................... 4-82
4.6.4 Anti-jerk valve............................................................................................... 4-84

4.6.4.1 Operation diagram .............................................................................. 4-84
4.6.4.2 Effect illustration .................................................................................. 4-84

4.6.5  Central Swivel Joint ..................................................................................... 4-86
4.6.6 Travel motor ................................................................................................. 4-87
4.6.7 Reducer ....................................................................................................... 4-89
4.6.8  Travel motor (Nabtesco) .............................................................................. 4-91
4.6.9  Operating principle of the basic components ............................................... 4-93

4.6.9.1 Double-balanced valve ....................................................................... 4-93
4.6.9.2 Operation of parking brake ................................................................. 4-98
4.6.9.3 Operation of braking valve .................................................................. 4-99

4.6.10 Control system ......................................................................................... 4-108
4.6.11 Manual pilot valve .....................................................................................4-110
4.6.12 Travel pilot valve .......................................................................................4-114

4.6.12.1 Operating principle ...........................................................................4-116

4.6.13 Solenoid valve...........................................................................................4-118
4.6.14 PPC accumulator ......................................................................................4-119
4.6.15 Pilot oil

lter.............................................................................................. 4-121

4.6.16 Hydraulic cylinders ................................................................................... 4-122

4.6.16.2 Lubrication at every 100 service hours ........................................... 4-123
4.6.16.1 Lubrication at every 500 service hours ........................................... 4-123

4.7 Work Equipment .................................................................................................. 4-124

4.7.1 Component dimensions ............................................................................. 4-124
4.7.2 Arm dimensions ......................................................................................... 4-126

4-3

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.7.2.1 Bucket dimensions ............................................................................ 4-128

4.8 Operator Station and Its Attachments .................................................................. 4-130

4.8.1 Air conditioner lines .................................................................................... 4-130

4.8.1.1  Layout of A/C components ................................................................ 4-132
4.8.1.2  A/C control panel ............................................................................... 4-133
4.8.1.3  Diagram of electrical circuit ............................................................... 4-134
4.8.1.4 Operating principle ............................................................................ 4-136
4.8.1.5 Compressor ...................................................................................... 4-137
4.8.1.6 Clutch ................................................................................................ 4-139
4.8.1.7 Condenser ........................................................................................ 4-140
4.8.1.8 Expansion valve ................................................................................ 4-141
4.8.1.9 Evaporator ........................................................................................ 4-141
4.8.1.10 Dehydrator  ..................................................................................... 4-142
4.8.1.11  Pressure switch .............................................................................. 4-143
4.8.1.12  Fresh air sensor .............................................................................. 4-144

4.8.2 Refrigerant ................................................................................................. 4-145

4.8.2.1 Compressor oil .................................................................................. 4-163

4.9 Engine Control ..................................................................................................... 4-164

4.9.1 System operation ....................................................................................... 4-165

4.9.1.1 Engine starting .................................................................................. 4-165
4.9.1.2 Engine speed control ........................................................................ 4-165
4.9.1.3 Engine shutdown .............................................................................. 4-165

4.9.2 System components .................................................................................. 4-166

4.9.2.1 Fuel control dial ................................................................................. 4-166
4.9.2.2 Controller .......................................................................................... 4-168

4.10 Electrical Control System................................................................................... 4-170

4.10.1 Control function ........................................................................................ 4-170
4.10.2  Diagram of machine control system......................................................... 4-171
4.10.3  Engine-pump combination control ........................................................... 4-173
4.10.4  Pump control function .............................................................................. 4-177

4.10.4.1 Constant power control ................................................................... 4-180
4.10.4.2 ESS control ..................................................................................... 4-180

4.10.5  Valve control function ............................................................................... 4-181
4.10.6  Dual travel speed control ......................................................................... 4-183
4.10.7  Engine preheat/overheat alarm ............................................................... 4-185
4.10.8  Auto deceleration/acceleration control ..................................................... 4-187

4-4

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.10.9 Engine speed calibration function ............................................................ 4-188
4.10.10 System parts and components .............................................................. 4-190

4.11 Monitoring System ............................................................................................. 4-195

4.11.1 Monitor ..................................................................................................... 4-196
4.11.2 Monitor panel ........................................................................................... 4-197

4.11.2.1 Alert and signal indicators .............................................................. 4-197
4.11.2.2 Operation keys ................................................................................ 4-199

4.11.3 Monitor display and operation .................................................................. 4-201

4.11.3.1 Default page .................................................................................... 4-201
4.11.3.2  Password entry to system information ............................................ 4-202
4.11.3.3 Main menu ...................................................................................... 4-202
4.11.3.4  Engine & throttle signals ................................................................. 4-203
4.11.3.5  Pilot pressure signals ...................................................................... 4-203
4.11.3.6  Main pump & main valve signals ..................................................... 4-204
4.11.3.7 Failure codes ................................................................................... 4-204
4.11.3.8  Throttle help information ................................................................. 4-205
4.11.3.9 Language selection ......................................................................... 4-205
4.11.3.10  System clock setup ....................................................................... 4-206
4.11.3.11 GPS information ............................................................................ 4-207
4.11.3.12 System setup ................................................................................ 4-208
4.11.3.13 Machine con

guration ................................................................... 4-208

4.11.3.14 Service hour setup ....................................................................... 4-209
4.11.3.15 Machine con

guration setup ......................................................... 4-210

4.11.3.16  Hydraulic oil temperature ...............................................................4-211
4.11.3.17  Screen brightness setup ................................................................4-211
4.11.3.18  System lockout (level 1) ................................................................ 4-212
4.11.3.19  System lockout (level 2) ................................................................ 4-212

4-5

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

(1) Air cleaner
(2) Muf

er AS

(3) Air cleaner
(4) Damper
(5) Flywheel
(6) Coupling
(7) Plunger pump

Speci

cation

Engine oil capacity: 35 L

4 STRUCTURE AND FUNCTIONS

4.1 Engine and Cooling System

4.1.1 Engine-related parts

AA-6HK1XQA

Ⅰ

2×M16

Tightening torque

120N•m

4×M18×60-10.9

Tightening torque

320N•m

W365413091

Ⅱ

Coupling installation

Fig. 4-1

4-6

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.1.2 Radiator and intercooler

(1) Coolant tank
(2) Water inlet pipe
(3) Water outlet pipe
(4) Air intercooler
(5) Condenser
(6) Oil radiator
(7) Water radiator

Speci

cation

Radiator AS:

H1260

460

1100-S105Y100Z30

Aluminum ribbon-tublar radiator

Tank capacity: 8.4 L

W365413092

Fig. 4-2

4-7

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.2 Power Train

4.2.1 Overview

(1) Swing motor (M5

180CHB-10A-3NA/265)

(2) Swing reducer (RG20D25G2-140)
(3) Swing bearing
(4) Idler
(5) Swivel joint

(6) Accumulator
(7)  Main control valve (KMX32NA/P45001)
(8)  Travel reducer (F80/121/OM/MB)
(9)  Plunger pump (K5V160DTH1

4R-9T06-V)

(10) Engine (AA-6HK1XQP-01)

ZX365-1304003

Fig. 4-3

4-8

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.2.2 Travel reducer AS

Fig. 4-4

ZX335-1002050

12°

4-9

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

(1) Gear hub
(2)  No.1 planetary gear
(3)  No.1 planetary carrier pin
(4)  No.1 sun gear
(5)  No.1 planetary carrier
(6)  No.2 planetary gear

(7)  No.2 planetary carrier pin
(8)  No.2 sun gear
(9)  No.2 planetary carrier
(10) Motor
(11) Check port
(12) Filler/drain port

No.

Check item

Criteria

Remedy

Clearance between No.2 planetary gear and
gear hub

0.100

～

0.356

1.10

Replace

Clearance between No.1 planetary gear and
gear hub

0.133

～

0.386

1.00

Clearance between No.1 sun gear and
No.1 planetary gear

0.05

～

0.286

1.10

Clearance between No.2 sun gear and
No.2 planetary gear

0.076

～

0.304

1.00

4-10

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

ZX335-1002004

4.2.3 Swing reducer mechanism

Fig. 4-5

4-11

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

(1) Plug
(2) Oil seal
(3) Self-aligning bearing
(4)  Gear ring (teeth: 66)
(5)  No.2 planetary carrier
(6)  No.1 planetary carrier
(7)  No.2 sun gear (teeth: 18)
(8)  No.1 sun gear (teeth: 15)
(9) Swing motor
(10)  No.1 planetary gear (teeth: 25)

(11) No.2 planetary gear GP
(12) No.2 planetary gear (teeth: 23)
(13) Spring pin
(14) Screw plug
(15) Grease

tting

(16) Self-aligning bearing
(17) Bearing seal
(18) Pinion gear
(19) Dipstick
(20) Oil-

lling tube

No.

Check Item

Criteria

Remedy

Clearance between swing motor
shaft and No.1 sun gear

Standard clearance

Clearance limit

Replace

0.18- 0.28

—

Clearance between No.1 sun gear
and No.1 planetary gear

0.16- 0.50

1.00

Replace

Clearance between No.1 planetary
gear and gear ring

0.18- 0.59

1.10

Clearance between No.1 planetary
carrier and No.2 sun gear

0.39- 0.71

1.20

Clearance between No.2 sun gear
and No.2 planetary gear

0.16- 0.50

0.90

Clearance between No.2 planetary
gear and gear ring

0.18- 0.59

1.00

Clearance between No.2 planetary
carrier and swing pinion gear

0.07- 0.23

—

Clearance between swing pinion
gear and swing bearing

0.22- 1.32

2.00

Speci

cation

Reduction ratio: 25.2

4-12

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.2.4 Swing bearing

(1) Inner race (teeth: 78)
(2) Steel ball
(3) Outer race

ZX335-1002005

927±103Nm

927±103 Nm

A-A

Speci

cation

Reduction ratio: 78/11= 7

Grease volume

lled: 27

1 Kg

a. Location S (soft zone of inner race)

b. Location S (soft zone of outer race)

Fig. 4-6

4-13

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

Check Item

Criteria

Remedy

Bearing axial clearance

(Mounted on chassis)

Standard clearance

Clearance limit

Replace

0.5-1.6

3.2

4-14

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

4.3 Undercarriage Travel System

4.3.1 Track frame and tensioning mechanism

(1) Idler
(2) Track frame
(3) Carrier roller
(4) Sprocket
(5) Track roller
(6) Track
(7) Long guard
(8) Short guard
(9) Guide seat

●

Dimension and number of track rollers may
vary depending on the machine model, but
their basic structures are the same.

●

Number of track rollers on one side: 9

ZX365-1304006

Fig. 4-7

4-15

Structure and Functions

SY365(B)H-9 Crawler Hydraulic Excavator

Standard track shoe

Model

Item

SY365H-9/SY365BH-9

Shoe width (mm)

600

Link pitch (mm)

216

Number of track
shoes on one side

Unit: mm

No.

Check Item

Standard

Remedy

Vertical width of

idler guide

Standard

size

Tolerance

Repair limit

Build-up

welding

or replace

Track frame

123

-1

—

Idler support

120

0.5

—

Horizontal width

of idler guide

Track frame

266

-1

—

Idler support

261

-0.5

—

Tension spring

Standard size

Repair limit

Replace

Free

length

Outer

diameter

Installation

length

Installation

load

Free

length

Installation

load

1225x 262

655

{21280kg}

208.5KN

795

—

Content .. 4 5 6 7 ..