TM 9-2815-225-34&P 3-72.  INJECTION TIMING (Contd) LOCATION/ITEM ACTION REMARKS c.  Changing Injection Timing (Contd) Refer to para. 3-28 for cam follower assembly gasket removal, and para. 3-70 for cam follower assembly gasket installation. b.  Retard timing by decreasing Refer to para. 3-28 for cam thickness of cam follower follower assembly gasket removal, assembly gasket (23). and para. 3-70 for cam follower assembly gasket installation. d.  Injection Timing Cylinder No. 3 NOTE The injection timing procedure for cylinder No. 3 is similar to timing No. 1 cylinder with one exception; the timing fixture must be moved to cylinder No. 3 and piston No. 3 must be used as the reference for determining Top Dead Center (TDC). e.  Injection Timing Cylinder No. 5 NOTE The injection timing procedure for cylinder No. 5 is similar to timing No. 1 cylinder with one exception; the timing fixture must be moved to cylinder No. 5 and piston No. 5 must be used as reference for determining TDC. FOLLOW-ON TASK: Install accessory drive housing assembly (para. 3-73). 3-574