TM 10-3930-638-24&P 4 - 4 .    T R A N S M I S S I O N    M A I N T E N A N C E    ( c o n t ) f. Reverse and Second  Clutch Assembly  (cont). STEP LOCATION ITEM ACTION REMARKS REASSEMBLY  (cont) b. Inner clutch Install and (cont) Lubricate oil seal with OE10 (refer to piston seal (31) size current lubrication order). To size seal, rotate clutch piston while holding a round object against new seal  as  shown.  Rotate  clutch  piston until seal is flush with outer diameter  of  clutch  piston NOTE Seals must be sized before installing clutch piston in drum and plug assembly (18). CAUTION Use care to not damage inner and outer seals. 11 Second a. Clutch piston (29) Install clutch side b. Piston spring (28) Position c.  Spring  retainer  (26) Position d.  Retaining  ring  (27) Position Change  1 4-201