TM 10-3930-664-24 D.  INSTALLATION WARNING Directional    control    valve    assembly    is heavy  and  awkward.    Enlist  the  help  of an  assistant  when  installing  to  prevent injury    to    personnel    and    damage    to components. 1. INSTALL FITTINGS AND ELBOWS INTO DIRECTIONAL                CONTROL                VALVE ASSEMBLY (2).  INSTALL ASSEMBLY. a. Install  new  O-rings  (23  through  29)  onto fittings (16 through 20) and elbow (22). b. Install          directional            control            valve assembly  (2)  into  vise.    Install  fittings  (16 through 20) and elbow (22) into front ports of  directional  control  valve assembly (2). c. Install bracket  (11) onto  floor plate using screws (14) and nuts (15). d. Attach            directional         control         valve assembly (2) to bracket (11) using screws (12) and nuts (13). 2. CONNECT HOSE ASSEMBLIES (1, 3 THROUGH    10)  TO  DIRECTIONAL  CONTROL VALVE ASSEMBLY (2). a. Connect  hose  assemblies  (7,  8,  9,  10)  to bottom   ports   of   directional   control   valve assembly (2). b. Connect  hose  assemblies  (3,  4,  5,  6)  to top ports. c. Connect large hose assembly (1). FOLLOW-ON MAINTENANCE: Service hydraulic oil in accordance with Lubrication Order END OF TASK 2-397