TM 10-3930-669-34 8-4. AUXILIARY PUMP DRIVE REPLACEMENT (CONT). NOTE Install drive sprocket, driven sprocket, and chain on shafts as an assembly. (22) Coat drive sprocket (16), driven sprocket (17), and chain (15) with clean transmission oil. (23) Install drive sprocket (16), driven sprocket (17), and chain (15) on input shaft (11) and shaft (14). WARNING Use care when removing or installing snap and retaining rings.  Snap and retaining rings are under spring tension and can act as projectiles when released and could cause severe eye injury. (24) Install two retaining rings (12 and 13) on input shaft (11) and shaft (14). 8-32