Patent ID: 6748640
Filing Date: 2004-06-15
Classification: B23P,B62D,Y10T

Abstract:
A ring installation method for mounting an anti-slip-off ring used for securely attaching a link coupling pin to links in a crawler belt of a vehicle,wherein the anti-slip-off ring is mounted on an annular open space defined between an open end of a pin insertion hole in a link and an insertion end of the pin exposed within the open end, by: providing a tool having an expansion guide member, mounting an expansion claw onto the expansion guide member, sitting the anti-slip-off ring onto the expansion claw, expanding the anti-slip-off ring to an expanded state by applying forces solely in radially outward directions of the ring, pressing the anti-slip-off ring against the outer periphery of an end of the pin while the anti-slip-off ring is being expanded to the expanded state, and pushing the anti-slip-off ring in the expanded state with a pusher to slide it on the outer periphery of the pin, from the end of the pin to a predetermined position displaced from the end of the pin, wherein the step of expanding includes sliding the expansion claw on the expansion guide member in a direction perpendicular to the radially outward directions in which the anti-slip-off ring expands.