TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 b. Removal, Code B (Figure 13-40) (1)   Lift crossheads. (2)   Remove pushrods by lifting them from their tappets. (3)   Remove  lockwires  (2)  and  (16),  guides  (6) and (11), and sockets (1) and (15). (4)   Lift  tappets  (7)  and  (9)  from  block  with  a long wire hook or other suitable tool. c. Replacement, Code A (Figure 13-39).  Replace any  defective  parts  (refer  to  paragraph  c)  and reassemble as follows: (1)   Insert  0.006  inch  (0.15  mm)  shim  between side of roller (5) and (11) and tappet (8) and (15);  press  pin  (4)  and  (12)  through  tappet and  roller  with  new  lockwire  (3)  and  (10)  in pin.  Make sure lockwire seats in groove of tappet. CAUTION Lubricating oil passage in pin and tappet must index for adequate lubrication. (2)   Install new copper washers (17) and holding tappet guides (16). d. Replacement, Code B (Figure 13-40).  Replace any  defective  parts  (refer  to  paragraph  e)  and reassemble as follows: (1)   Insert  0.006  inch  (0.15  mm)  shim  between side of roller (4) and (12) and tappet (7) and (9);  press  pin  (5)  and  (10)  through  tappet and  roller  with  new  lockwire  (2)  and  (16)  in pin.  Make sure lockwire seats in groove of tappet. (2)   Install new sockets (1) and (15) and guides (6) and (11). e.     Inspection. (1)   Using a fine wire, check indexing of pin and body lubricating oil passage. (2)   Check  freeness  of  roller  by  rotating  two  or three turns. (3)   Check  injector  and  valve  pushrod  ball  end for wear. (4)   Check  socket  of  pushrod  with  ball  end  of new rocker lever adjusting screw. (5)   Check pushrod for straightness. (6)   Check pushrod for out-of-round condition. 13-27. CYLINDER   HEAD   ASSEMBLY.      Refer   to   the Operator/Crew and Organizational Maintenance manual for    injector,    turbocharger,    exhaust    manifold,    water manifold, and cylinder head cover removal instructions. Refer to figure 13-41 and proceed as follows: a. Replacement.        Proceed    as    specified    in    the following paragraphs: (1)   Remove screws (1) and washers (2).  Install guide studs to aid in removal of the cylinder heads. CAUTION Do  not  crank  engine  with  cylinder  head removed   unless   screws   (1)   have   been reinstalled     to prevent movement of cylinder lines. NOTE Tag cylinder heads for position occupied on  engine  so  that  they  may  be  installed in the same position. (2)   Using    a    suitable    hoist,    remove    cylinder heads. WARNING OVERHEAD OPERATIONS HAVE INHERENT HAZARDS THAT CANNOT BE MECHANICALLY SAFEGUARDED.  HARD HATS AND SAFETY SHOES ARE REQUIRED. b.     Installation. NOTE Cylinder heads should have valve guides,  valves,  and  springs  assembled in position before installation. 13-76