TM  5-2815-241-34&P ROCKER  ARM  HOUSING  AND  PUSH  ROD  -  CONTINUED ACTION LOCATION ITEM REMARKS INSPECTION  -  CONTINUED NOTE Steps given are typical for all push rods. 16. Push  rod  (1) 17. 18. a. Wipe  clean  with  rag  and  inspect  for cracks  and  bends. If  cracked  or  bent,  replace. b. Coat ball end of adjusting screw (2) with  prussian  blue. c. Place ball end of adjusting screw (2) into push rod socket (3) and rotate using  hand  pressure. d. Check  push  rod  socket  (3)  wear  area. If  push  rod  socket  (3)  wear  area  is not  80-percent  blued,  replace  push rod. Push  rod  (1) NOTE a. Using  5/16-inch  radius  gage,  check  ball end (4) for wear. If  ball  end  (4)  diameter  is  not  0.623 to  0.625  inch,  replace  push  rod. b. Check for loose push rod socket ends (3)  or  ball  ends  (4). If  socket  ends  or  ball  ends  are  loose, replace  push  rod. Steps given are typical for adjusting screws and adjusting bolts. Six  adjusting screws  (5)  and  six new  locknuts  (6) Wipe  clean  and  screw  locknut  down  full length of threads by hand. If  locknut  binds  on  threads,  replace adjusting  screw  or  adjusting  bolt  (7). 2-248