ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 5-29 5-11.  CYLINDER HEAD MAINTENANCE  -  cont. D.    INSTALLATION. 1. Install air intake pipe studs (17, Figure 5-21) into cylinder head (1). 2. Lubricate  the  stems  of  exhaust  valve  (16)  and inlet  valve  (15)  with  a  light  coat  of  lubricating oil.  Slide valves into cylinder head (1). 3. Install valve stem seal (13) and washer (14) onto inlet valve (15). 4. Install   and   compress   valve   spring   (12)   using compression    tool.        Carefully    install    spring retainer   (11).      Slowly   release   hold   on   com- pression tool to release spring tension. 5. Install cotter assembly (10) and valve cap (9). 6. Repeat steps 3 through 5 for exhaust valve (16). 7. Mate new O-ring (7) and cylinder head gasket (8) to crankcase. 8. Carefully  slide  cylinder  head  (1)  over  studs  (6) and mate to crankcase. 9. Install nuts (2, 3) and washers (4, 5).  Torque nuts in a criss-cross pattern to 30.5 to 33 ft-lbs. (420 to 460 kg-cm).  Tighten a second time to ensure a snug fit of cylinder head to crankcase. 10.    Install air cleaner (Para. 3-16). 11.    Install fuel injector (Para. 3-14). 12.    Install rocker arm assembly (Para. 4-10)   Figure 5-21.  Cylinder Head Installation