Patent ID: 7572114

Claim:
A pump comprising: a pump housing; an end cap attached to a top side of said pump housing, said end cap comprising an oil suction port at one end thereof and an oil relief port at one lateral side thereof; a connecting cap connectable to a top side of said end cap opposite to said pump housing in first and second positions, with the first and second positions being in different directions, said connecting cap comprising two ports cut through two opposite ends thereof for letting in and out of a fluid to/from a hydraulic motor; and two plugs adapted to selectively seal one end of each of the two ports of said connecting cap to control the flow direction of the fluid passing to/from said hydraulic motor through said connecting cap; and wherein said connecting cap further comprises four oil access holes respectively disposed at a bottom side thereof corresponding to each end of each of the two ports of said connecting cap; said end cap further comprises two ports disposed at the top side thereof remote from said oil suction port and respectively provide fluid communication with the oil access holes near one end of each of the two ports of said connecting cap; with the connecting cap being removably connected to the top side of said end cap; with the bottom side of the connecting cap being removably connected to the top side of the end cap; with the two ports of the end cap being aligned with two of the four oil access holes and providing fluid communication therewith during assembly in the first position with another two of the four oil access holes being blocked by the top side of the end cap by assembly of the connecting cap to the end cap and preventing fluid communication into or out of the other two of the four oil access holes in the first position, with the two ports of the end cap being aligned with the other two of the four oil access holes and providing fluid communication therewith during assembly in the second position, with said two of the four oil access holes being blocked by the top side of the end cap by assembly of the communication cap to the end cap and preventing fluid communication into or out of the said two of the four access holes in the second position.