Travel Motor Reduction Gear Torque Flow
EC210-4-8
Travel Motor Ports Location
High speed Low speed
P2
RED
P1 P
D2
D1 P2
P3
P5 P P4 P3
D1
A
B P4
P1
D2 P5
A
B EC210-4-86
Travel Motor Sectional View A
A B Section A–A
C
C
Section B–B
Section C–C
EC210-4-88(1)
Travel Motor Sectional View (2)
EC210-4-88(2)
Brake Valve (Normal Travelling)
EC210-4-92
Brake Valve (Stopping)
EC210-4-93
Parking Brake Operation When travelling
When stopping
EC210-4-94
Displacement Changeover Valve Low speed
D A
pilot pressure
B A B
MAX Y
C
P
Drain EC210-4-96(1)
Displacement Changeover Valve High speed
D A
B A B
x MIN Y
C
P
EC210-4-96(2)
Displacement Changeover Valve Automatic Low Speed Changeover
D A
pilot pressure
B A B
MAX Y
C
P
Drain EC210-4-97
Swing System 2
A
B
1
3
1. Main pump 2. Control valve 3. Swing motor 4. Reduction gear 5. Pinion gear 6. Swing ring gear
4
6
5 EC210-4-135
Swing Motor
SH
PG
PG SH
Rebound damping valve
A, B
PB PA
T Y P E
RS1 Db GO
Dd
Relief valve
GI, L SH PG Db RS1 PA
PB
Circuit diagram
Port
Symbol A, B
Anti-cavitation Drain Brake releasing Brake pilot
RS1 Dd PG SH
Main
Pressure checking Gear oil filling port (oil level checking) Gear oil outlet
A
GO
PA, PB GI, L GO
B EC210-4-137
Swing Motor Sectional View
EC210-4-139
Swing Motor (Hyd. motor operation) Low press. oil High press. oil
A
Cylinder block F1
Outlet port
Inlet port
F F2
Drive shaft
Valve plate Swash plate
B
Piston Shoe EC210-4-144
Swing Relief Valve
Spring (321)
Area A1 Orifice (m)
Chamber (g)
Area A2
Area A3
Check ball Chamber (h)
(1) P
Seat
Plunger (301)
Sleeve (201)
R
Piston (303)
Spring seat Spring (322)
( 2)
(4)
Relief Pressure PS
P2 P1
( 1)
(2)
(3)
(4) Time
EC210-4-146
Rebound Damping Valve l
C Bm
322
Am
k
313
321 Br k l
Ar
m
311
n
l Rebound damping valve
Rebound damping valve
P => Ps k
P (Pressure) Y
t
Ps p
P
l
X Z T (Time)
g
k EC210-4-148
Swing Brake
Spring force Oil Pressure
Oil Pressure chamber EC210-4-149
Turning Joint B
D
F
C
D G B
G
A F
E
C
A
E
(A port : close)
C E GB F D
AL4 Ph BR3 BL4 Dd AR3
EC210-4-166
Swing Ring Gear
E
Grease port
Inner race marked as "s" soft zone Plug position (outer race) EC240
5 5 Plug position (outer race) Inner race marked as "s" EC210 soft zone
EC210-4-186
Superstructure Removal and Installation Confirm alignment of match-marks.
A
Fig. 3 Slewing ring installed
Fig. 4 Lifting the upper frame
Fig. 5 Installing the upper frame EC210-7-4
Undercarriage
Track Link
EC210-7-8
Idler
EC210-7-10
Sprocket B
A
Unit : mm(in) Symbol
Item
EC210 / EC240
A
Wear limit of sprocket tooth profile
A
Width of sprocket tooth
A
Number of teeth
Standard value Allowable value
Remedy
6 (0.24) 68 + 1.5 (2.68 +0.06)
Replace
62 (2.44) 21 EA.
EC210-7-19
Top Roller
EC210-7-29
Bottom Roller
EC210-7-36
Recoil Spring
EC210-7-46
Air Conditioning System
Outdoor air Evaporator Heater core Face Foot Indoor air
Defroster
Engine Condenser Compressor
EC210-8-7
Air Conditioning System 16
14
A
11 7
1
17
12
2 4 5 6 16
13 3 17
15
14 8 9 10
EC210-8-8
Switch and Controller Air flow control switch
Air conditioner switch
Fan speed control switch
Cool and heat temperature control switch
Indoor/Outdoor selection switch
EC210-8-11(1)
Refrigerant Circuit High temp, high pressure gas
Low temp, low pressure gas
Evaporator Outside air
Cool air Condenser Low pressure liquid
Compressor
Expansion valve
High pressure liquid
Inside air
Receiver dryer
Blower Outside
Inside
EC210-8-11(2)
Compressor
Discharge Suction
Lubrication oil port
EC210-8-26
Expansion Valve
pf pe
Diaphram Valve rod
Capillary tube Evaporator Outside uniform pressure tube
Spring To compressor
ps
Heat reducing canister Diaphram compartment Refrigerant inlet (liquid) Diaphram Needle valve (Throttle valve)
Refrigerant inlet (Liquid)
Capillary tube Heat reducing canister
Refrigerant outlet Uniform pressure tube
Pressure spring
Adjustment screw EC210-8-27
Condensor
1. Receiver Dryer 2. condenser
1
2
KET SWP SER RECEP HOUS'G & TM' L(2P) AV 0.85 BG
AV 0.85 BW
EC210-8-28
