TM    10-3930-638-24&P 2-43. SERVICE BRAKE MAINTENANCE (cont) a. Service Brake Assembly (cont). 4 STEP LOCATION ITEM ACTION REMARKS CLEANING  (cont) WARNING (cont) Wear   safety   glasses   when   drying   parts   with   compressed   air.   Failure to   do   so   could   cause   serious   injury   to   eyes   and   possible   blindness. If   you   hurt   your   eyes   or   if   a   foreign   object   is   blown   into   your eyes,   seek   medical   attention   immediately. 5 All   other   parts Clean Use   cleaning   solvent   P-D-680. Dry  thoroughly  with  com- pressed   air INSPECTION 6 Shoe   and   lining Inspect Replace   if   lining   glazed, ( 6) scored,   cracked,   deteri- orated,   worn   to   3/32   inch or   less,   or   if   brake   shoe or  pawl  holes  worn 7 Springs   (1,   3, Inspect Replace   if   bent,   cracked,   dis- and  5) torted   or   stretched 8 Retainer   (2)   and   Inspect Replace   if   cracked,   bent   or rod   (4) corroded 9 Cap  screws  (7) Inspect Replace   if   worn,   or   if   threads and   lock damaged washers  (8) NOTE Inspect   under   wheel   cylinder   (9)   rubber   boots   for   damage. 10 Wheel   cylinder Inspect Replace   if   leaking,   cracked, ( 9 ) chipped,   threads   damaged, or   rubber   boots   deterio- rated. 11 Backing   plate Inspect Replace   if   worn,   distorted   or (11) damaged,   or   if   rivets   loose or   sheared   (see   step   12) 11.1 Oil slinger (11. 1) Inspect Replace if damaged or distorted (see step 12). Change  4            2-285