TM   9-2350-261-10 P R E P A R A T I O N   B E F O R E     W A T E R     O P E R A T I O N S I N I T I A L    S E T U P Personnel   Required: Equipment   Conditions: Driver Engine  stopped  (page  2-184) Crew Carrier  tracks  blocked  (page  2-221  ) Power  control  enclosure  turned  off References: (M1068  Only) FM   7-7 (TM1-7010-256-12&P) T M    1 1 - 7 0 1 0 - 2 5 6 - 1 2 &P NOTE The   following   procedures   are applicable    to the M1068, M106A2, M1064, M125A2, M113A2,   M577A2,   and   M1059 earners, unless otherwise stated. WARNING Prior  to  water  op- erations,    perform a l l    c a r r i e r    P M C S . a n d    P r e p a r a t i o n Before  Water  Op- eration.   Pay   par- ticular   attention   to   drain   plugs and access covers which must be in   place, straight   and   tight. Failure  to  do  this  could  result  in earner  sinking  and  loss  of  life.  A plywood   trim   vane   with   bolt-on buoyancy   pods   is   required   on the M113A2 and M1059, extended/secured    in forward position   before   entering   water. A   plywood   trim   vane   (only)   is r e q u i r e d    on the M106A2, M577A2,   M1068,   and   M1064, extended/secured   in   forward position   before   entering   water. Failure  to  do  this  could  result  in earner  sinking  and  loss  of  life. 1. 2. 3. Check  that  engine  is  off,  steering levers  are  locked,  and  earner  is blocked. Check  that  access  covers,  drain cover,  and  final  drive  drain  plugs are   flush,   tight,   and   not   tilted. Check  that  fuel  filler  cap  is  snug and not held out of place by keeper  chain. GO   TO   NEXT   PAGE Change   3 2-275