Case 580SR Service Manual page 670

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80 SECTION 35 - HYDRAULIC SYSTEM
Loosen and remove the screw (1). Slide out the rod
pin (2) with an hammer.
NOTE: the barrel end of the dipper cylinder and the
rod end of the boom cylinder use a common pin (2).
If the boom cylinder has to be disassembled, slide
out the pin (2) only partially, then remove the cylin-
der rod and finally reinsert the pin.
If necessary, use hydraulic power to very slowly re-
tract the cylinder. In this way, the rod moves away
from the attaching point.
Disconnect the hydraulic hoses. Remove the stop
ring (3) and slide out the head pin (4).
NOTE: accurate positioning of the cylinder prior to
hose disconnection will aid pin removal.
Remove the backhoe attachment boom cylinder.