TM 10-3930-659-34 4-70. FORK/BOOM CYLINDER REPAIR (Con’t). NOTE Note position of preformed packings and backup ring to aid during assembly. 7. Remove  two  preformed  packings  (15)  and  backup  ring  (16)  from  guide  (9).    Discard  preformed  packings  and backup ring. NOTE Note position of seals and wear ring to aid during assembly. 8. Remove wiper seal (20), rod seal (19), wear ring (18), and buffer seal (17) from guide (9).  Discard seals and wear ring. 9. Using arbor press, press two seals (23) and bushing (22) from rod (6).  Discard seals. 10. Remove lubrication fitting (21) from rod (6).  Discard lubrication fitting. 11. Using arbor press, press two seals (24) and bushing (25) from barrel (1). TA708433 4-290