8-43
1. REMOVAL AND INSTALL OF MOTOR
REMOVAL
Lower the work equipment to the ground
and stop the engine.
Operate the control levers and pedals
several times to release the remaining
pressure in the hydraulic piping.
Loosen the breather slowly to release the
pressure inside the hydraulic tank.
Escaping fluid under pressure can
penetrate the skin causing serious
injury.
When pipes and hoses are disconnected,
the oil inside the piping will flow out, so
catch it in oil pan.
Disconnect hose assembly(2).
Disconnect pilot line hoses(4,5,6,7,8,9).
Sling the swing motor assembly(1) and
remove the swing motor mounting bolts
(10).
Motor device weight : 36kg(79.4lb)
Remove the swing motor assembly.
When removing the swing motor
assembly, check that all the piping have
been disconnected.
INSTALL
Carry out installation in the reverse order
to removal.
Bleed the air from the swing motor.
Remove the air vent plug.
Pour in hydraulic oil until it overflows from
the port.
Tighten plug lightly.
Start the engine, run at low idling and
check oil come out from plug.
Tighten plug fully.
Confirm the hydraulic oil level and check
the hydraulic oil leak or not.
1)
(1)
(2)
(3)
ö
(4)
(5)
(6)
(7)
ö
GROUP 5 SWING DEVICE
2)
(1)
(2)
Η
Θ
Ι
Κ
Λ
(3)
ö
13031GE18
1408DA30
1408DA31
8-44
2. DISASSEMBLY AND ASSEMBLY OF SWING MOTOR
STRUCTURE
1)
1
Body
2 Oil seal
3
Roller bearing
4
Snap ring
5
Shaft
6
Bushing
7
Pin
8
Shoe plate
9 Cylinder block
10 Spring
11 Ball guide
12 Set plate
13 Piston assembly
14 Friction plate
15 Plate
16 Brake piston
17 O-ring
18 O-ring
19 Spring
20 Rear cover
21 Needle bearing
22 Pin
23 Valve plate
24 O-ring
25 O-ring
26 Wrench bolt
27 Plug
28 Back up ring
29 O-ring
30 Spring
31 Check
32 Relief valve
33 Anti-rotating valve
34 Time delay valve
35 Wrench bolt
36 Plug
37 O-ring
38 Plug
39 Plug
40 Level gauge
41 Flange
42 O-ring
43 Name plate
44 Rivet
45 Plug
46 O-ring
47 O-ring
48 Black up ring
34
28 29
2 3 4 1,
8
12
13
1514 1718 23 21 20
44
43,
6 5 11
9
10
16
36
19
22
7
37
39 32
,35
,
27
30
31
33
26
38
24,25
40
41, 42
1407A2