TM 10-3930-664-24 2-15.  CYLINDER HEAD ASSEMBLY (WITH VALVES) ADJUSTMENT This task covers: Removal, Adjustment, and Installation INITIAL SETUP: Tools and Test Equipment: Equipment Condition: General Mechanics Tool Kit (1, App.  E) Towbar lowered (para.  2-126) Feeler Gage (21, App.  E) Torque Wrench (32, App.  E) Crowsfoot Wrench (54, App.  E) Materials / Parts: O-Ring Seal, Item 5 (4 ea.) Gasket, Item 6 (4 ea.) A.  REMOVAL 1 RELEASE  HOOD  ASSEMBLY  (2)    BY  LIFTING HANDLE (1) OPEN HOOD ASSEMBLY. 2 REMOVE VALVE COVERS (3). a. Remove   valve   covers   (3)   by    removing screws  (4).    Remove  and  discard  O-ring seals (5). NOTE Ensure that all gasket material is removed from cylinder head and cover. b. Remove and discard gaskets (6). 2-70