Maintenance
Maintenance Manual for Crawler Crane
c) If quick-release coupling is screw-type coupling, screw the coupling until a firm and tight fit
is attained. At this time, the quick-release coupling is screwed.
d) Screw the dust cap in time to prevent the impurities such as dust from entering when the
quick-release coupling is not connected.
Figure 4-35 Quick-release coupling
Female end of quick-release coupling
quick-release
coupling
quick-release
Male end of quick-release coupling
4-56