TM  5-2815-241-34&P PISTON  AND  CONNECTING  ROD  -  CONTINUED ACTION LOCATION ITEM REMARKS NOTE Procedure for checking connecting rods is typical for use of the ST-561 connecting rod checking  fixture. 18.   ST-561  connecting rod checking fixture (7) Holder plate knob (8) a.  Loosen. Raise  high  enough  so  piston  pin mandrel (5) will clear Indicator pins (9)  when  installed. b. Raise  holder  plate  (10)  and  retighten holder plate knob. 19. 20. 21. Master   connecting rod  (1) Position  in  checking  fixture  by  seating expanding  arbor  (6)  in  base  (11)  and  piston pin  mandrel  (5)  against  frame  (12). Holder  plate knob  (8) a. Loosen  and  slowly  lower  holder  plate (10)  until  indicator  pins  (9)  just  seat  on piston  pin  mandrel  (5). b.    Tighten  holder  plate  knob  securely. Two  dial indicators (13) Set  dials  to  zero. T A     2 4 2 4 9 3 2-227