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A hermetic rotary compressor assembly having a housing, a cylinder block and a bearing assembly within the housing. The cylinder block and the bearing assembly define a cylindrical cavity which has a roller piston disposed therein. The rotary compressor assembly includes a motor drivingly coupled to

A hermetic rotary compressor assembly having a housing, a cylinder block and a bearing assembly within the housing. The cylinder block and the bearing assembly define a cylindrical cavity which has a roller piston disposed therein. The rotary compressor assembly includes a motor drivingly coupled to the roller piston and the cylinder block has a vane slot extending completely axially through and extending radially from an outside perimeter surface of the cylinder block to the cylindrical cavity. At least a portion of the vane slot is defined by a pair of substantially parallel sidewalls and a vane is disposed in and guided by the vane slot and is urged against said roller piston. The cylinder block is fixed in a state of circumferentially oriented stress. A method to assemble the rotary compressor includes spreading apart the sidewalls of the vane slot in the cylinder block, inserting into the spread apart slot a gauge vane of thickness greater than the thickness of a reciprocating vane, releasing the block to cause the slot sidewalls to engage the gauge vane, fixing the cylinder block to hold the engaged sidewalls, removing the gauge vane from the slot, and inserting the reciprocating vane in the slot, whereby a clearance is maintained between the reciprocating vane and slot sidewalls. Another method includes closing together sidewalls of the vane slot to engage the gauge vane, fixing the cylinder block to hold the engaged sidewalls, removing the gauge vane from the slot, and inserting the reciprocating vane in the slot.

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[What is claimed is:] [1.]elastically spreading apart sidewalls of a vane slot in a cylinder block;inserting into the spread apart slot a gauge vane of thickness greater than the thickness of a reciprocating vane;releasing the block to cause the slot sidewalls to engage the gauge vane;then fixing th

[What is claimed is:] [1.]elastically spreading apart sidewalls of a vane slot in a cylinder block;inserting into the spread apart slot a gauge vane of thickness greater than the thickness of a reciprocating vane;releasing the block to cause the slot sidewalls to engage the gauge vane;then fixing the cylinder block to hold the engaged sidewalls;then removing the gauge vane from the slot; andthen inserting the reciprocating vane in the slot, whereby a clearance is maintained between the reciprocating vane and slot sidewalls.