TM 10-3930-664-24 4. Install  new  wiper  (5),  back-up  ring  (6),  seal  ring (7),    and    three    wear    rings    (8)    into    cylinder housing (2). CAUTION Use  care  when  installing  piston  rod  (3) to  prevent  damage  to  wiper,  rings,  and inside of cylinder housing (2). 5. Carefully   insert   piston   rod   (3)   with   gland   into cylinder    housing    (2)    until    groove    in    cylinder housing is exposed.  Install snap ring (4). 6. Push  piston  rod  (3)  with  gland  out  of  cylinder housing   (2)   until   groove   in   gland   is   outside housing.  Secure using snap ring (1). FOLLOW-ON MAINTENANCE: Install steering cylinder (para.   3-39) END OF TASK 3-133