7-36
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 pene-
trate 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 (59, 61, 76).
Disconnect pilot line hoses (23, 29).
Sling the swing motor assembly (1) and
remove the swing motor mounting bolts
(50).
Motor device weight : 23 kg (50 lb)
Remove the swing motor assembly.
When removing the swing motor assem-
bly, 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)
ö
(7)
ö
GROUP 5 SWING DEVICE
2)
(1)
(2)
Η
Θ
Ι
Κ
Λ
(3)
A
B
T
50
76
15
61
59
DR
29
23
13031GE18
1697SM01
1697SM02
7-37
COMPONENTS (1/2)
2)
309
305
304
307
306
303
311
302
301
312
308
312
310
DATAIL ITEM 243
218
205
217
226
210
203
216
214
202
207
206
208
209
204
212
215
212
221
213
224
243
248
247
249
246
201
223
225
1692SM06
201 Body
202 Plate
203 Shaft
204 Cylinder barrel
205 Valve plate
206 Piston
207 Shoe
208 Shoe holder
209 Barrel holder
210 Swash plate
212 Retainer
213 Pin
214 Filter
215 Spring C
216 Bearing
217 Bearing
218 O-ring
221 Snap ring
223 Screw
224 Spring pin
225 Pin
226 Pin
243 Relief valve
246 Check valve
247 Plug
248 Spring
249 O-ring
301 Seat
302 Retainer
303 Poppet
304 Piston
305 Cap
306 Spring
307 Spacer
308 O-ring
309 O-ring
310 O-ring
311 O-ring
312 Back up-rin