TM 10-3930-664-24 3-48.  PRIORITY VALVE REPAIR This task covers: Disassembly, Cleaning, Inspection, Repair, and Assembly INITIAL SETUP: Tools and Test Equipment: Equipment Condition: General Mechanics Tool Kit (1, App.  E) Priority valve removed Vise (30, App.  E) (para.  2-121) Depth Gauge (20, App.  E) Torque Wrench (32, App.  E) Materials / Parts: Lubricating Oil (16, App.  C) O-Ring, Item 3 (1 ea.) O-Ring, Item 10 (1 ea.) A.  DISASSEMBLY CAUTION Use  care  when  clamp;,:    i  valve  in  vise. Body  distortion      could      result    if    jaws are overtightened. Use protective material on vise jaws to prevent damage. 1. Install priority valve in vise, relief valve end up. 2. Remove  relief  valve  body  (2)  from  valve  body (1).  Remove and discard O-ring (3). NOTE Before   removing   adjusting  screw  (4), measure  depth  of  screw  and  record  for installation. 3. Remove   adjusting   screw   (4)   from   relief   valve body  (2).    Remove  spring  guide  (5),  spring  (6), ball holder (7), and ball (8). 3-156