TM10-3930-660-20 9-9. TRANSMISSION OIL FILTER HEAD ASSEMBLY - REPLACE This task covers: a. Removal b. Installation Initial  Setup Tools Tool Kit, Automotive Mechanics Materials/Parts Filter  element  (1) Hydraulic oil (App. C, Item 35) Wrench, Strap, 1-6” Capacity Lockwashers  (8) Tags (App. C, Item 51) Cap and Plug Set Equipment  Condition Vehicle parked on level ground. Transmission cover removed, para.  16-6. CAUTION Wipe the area clean around all hydraulic connections to be opened during removal and disassembly. Cap oil lines and plug holes after removing lines. Contamination of the hydraulic system could result in premature failure. If more than one hydraulic line is to be removed, identify lines to assure proper installation. Use suitable container to catch any hydraulic oil that may drain from  system. 9-20