Patent ID: 7117851

Claim:
A method for installing a resin combustion gas seal to an injector fitted to an installation recess, wherein the injector has a body and a nozzle portion extending from the body, the nozzle portion having an annular installation groove in which the combustion gas seal is installed, the installation groove having an increased diameter portion in a section closer to the body, wherein the combustion gas seal seals an annular space defined between the nozzle portion and an inner surface of the installation recess, the method comprising: a first step wherein, with the combustion gas seal being prevented from interfering with the increased diameter portion, the nozzle portion is caused to pass through the combustion gas seal from a distal end of the nozzle portion, thereby arranging the combustion gas seal at the installation groove; and a second step wherein, after arranging the combustion gas seal at the installation groove, relative movement is produced between the injector and a correction jig such that the correction jig approaches the distal end of the nozzle portion from a side of the body, thereby correcting an outer diameter of the combustion gas seal.