Department of Army supply catalog. TC 7, 8 & 9. Organizational, field, and depot maintenance allowances and list of all service parts. E2. Engine, Diesel, marine, air starting direct drive, left hand Atlas Imperial model 6HM1558 TC stock no. 10-3474-10-210, engine, Diesel, marine, air starting, direct drive, right hand Atlas Imperial model 6HM1558 TC stock no. 10-3474-10-220; July 1950.