TM 10-3930-669-34 13-4.  FRAME COUNTERWEIGHT REPLACEMENT (CONT). (3) Remove  two  screws  (6)  and  washers  (7)  from rear    lead    counterweight    (8)    and    rear    steel counterweight (9). (4) Install lifting eye in rear counterweight (8). WARNING Rear  lead  counterweight  weighs  580 lbs  (263  kg).    Attach  suitable  lifting device   prior   to   removal   to   prevent possible injury to personnel. (5) Using lifting device, remove rear lead counterweight  (8)  from  rear  steel  counterweight (9). (6) Remove lifting eye from rear lead counterweight (8). (7) Remove two screws (10) and washers (11) from front   lead   counterweight   (12)   and   front   steel counterweight (13). (8) Install lifting eye in front counterweight (12). WARNING Front  lead  counterweight  weighs  530 lbs (240 kg). Attach  suitable  lifting  device  prior  to removal    or    installation    to    prevent possible injury to personnel. (9) Using lifting device, remove front lead counterweight (12) from front steel counterweight (13). (10) Remove lifting eye from front lead counterweight (12). 13-34