Recently, as the use of automatic transmissions increases, attention is focused on remanufacturing of automatic transmissions. The automatic transmission includes a clutch, a brake, a planetary gear, and a planetary gear unit, which are power transmission devices, an oil pump and a valve body which are lubricating devices, a controller which is an electronic control device, sensors and switches which input and output the controller. In particular, this study is a basic study for remanufacturing such as disassembling, assembling, and inspecting element parts for manufacturing valve body material which is a core part of automatic transmission.

Abstract
1. 서 론
2. 토크컨버터와 오일 펌프 재제조
    2-1. 스프링 형태의 토크컨버터 재제조 공정기술
    2-2.피스톤 타입 토크컨버터 재제조 공정 기술
    2-3 스프링 및 피스톤 타입의 토크컨버터 재제조 기술
    2-4 토크 컨버터 고장모드 분석
    2-5 오일펌프 재제조 기술
3. 밸브바디 재제조 기술
    3-1 밸브바디 구조
    3-2 슬리브 오버 사이징 가공기술
    3-3 오버사이즈 스풀 설계/제작/공차관리 기술개발
    3-4 밸브바디 성능 조정 기술
    3-5 솔레노이드 밸브 재제조 공정
    3-6 솔레노이드 밸브 븐해 조립 기술
4. 결과 및 고찰

• Rha Wan Yong(Shinsung University) Corresponding Author