Doosan DX60R Shop Manual page 596

6. Remove O-ring (236) from plug (224).
NOTE:
Do not reuse O-ring which has been removed.
7. Remove O-ring (237) from plug (226).
NOTE: Do not reuse O-ring which has been removed.
Disassembling Valve (For 2-Speed Control)
1. Press and hold down stopper (264) using a steel bar, and
in that state, as shown in the diagram, press the notch in
ring (265) using a sharp pointed steel bar. This deforms
ring (265), disengaging it from the ring groove in rear
flange (201). Ring (265) can now be removed from rear
flange (201).
NOTE:
Do not reuse O-ring which has been removed.
2. Insert the rear flange so that ring hole from which the ring
was removed comes down, and lift rear flange (201) to
remove stopper (264), spring (266) and valve (263).
NOTE: When removing the ring from its hole, it may be
scratched. Correct any scratched hole surface.
Do not reuse the disassembled ring.
If inverting the rear flange, it does not cause stopper,
spring, and valve to come out, carefully apply
compressed air from the pilot port to remove them.
Travel Motor
Page 38
CAUTION
Figure 55
Figure 56
Figure 57
SP001686