Here is a rebuild kit for your Quincy QRDS 3 HP or 5 HP oilless compressor.  

Kit contains:

2 each PN 111526 crankshaft bearings

1 each PN 112527 Connecting rod bearing

1 each 113330 needle roller bearing for wrist pin

2 each 113333 Oil seals for wrist pin

1 each lube kit for wrist pin bearing.

THIS KIT DOES NOT HAVE THE 2 GASKETS ABOVE AND BELOW THE VALVE PLATE.