690E LC Excavator Repair TECHNICAL MANUAL 690E LC Excavator Repair TM1509 02JUL98 (ENGLISH) For complete service information also see: 690E LC Excavator Operation and Tests . . . . . . . . . . . . . . . . . . . TM1508 6068 Engine (Serial No. —559602) . . . . . . . . CTM8 6068 Engine (Serial No. 559603—) . . . . . . . . CTM104 Alternators and Starting Motors. . . . . . . . . . CTM77 Worldwide Construction And Forestry Division LITHO IN U.S.A.