TM 5-4220-233-14 Section V.  UNIT MAINTENANCE INSTRUCTIONS Paragraph Page 4-13 General.................................................................................... 4-15 4-14 Work Safety............................................................................. 4-15 4-15 Cleaning Instructions................................................................ 4-15 4-16 Inspections Instructions............................................................ 4-16 4-17 Repair Instructions ................................................................... 4-17 4-18 Tagging Wire, Hoses and Tubing............................................. 4-17 4-19 Depressurizing Compressed Gas System for Maintenance....... 4-18 4-20 Compressed Gas System Leak Test ........................................ 4-19 4-21 Cylinder Assembly ................................................................... 4-21 4-22 Cylinder Clamp Assembly ........................................................ 4-23 4-23 Cylinder Pressure Gauge(s)..................................................... 4-24 4-24 Manifold and Servicing Pressure Gauge(s).............................. 4-26 4-25 1/4-Turn Ball Valve(s) .............................................................. 4-28 4-26 Pressure Regulator .................................................................. 4-30 4-27 Repair Pressure Regulator....................................................... 4-33 4-28 Low Pressure Manifold............................................................. 4-38 4-29 High Pressure Manifold............................................................ 4-40 4-30 Fill Station Needle Valve(s)...................................................... 4-42 4-31 Bleed Off Needle Valve............................................................ 4-44 4-32 Servicing Needle Valve............................................................ 4-46 4-33 Manifold Needle Valve ............................................................. 4-48 4-34 High Pressure Station Needle Valve......................................... 4-50 4-35 Recharge Station Needle Valve ............................................... 4-52 4-36 Relief Valve(s) ......................................................................... 4-54 4-37 Particulate Filter ....................................................................... 4-56 4-38 Yoke Adaptor ........................................................................... 4-58 4-39 Fill Hose................................................................................... 4-59 4-40 Tire .......................................................................................... 4-60 4-41 Wheel ...................................................................................... 4-61 4-42 Hub and Drum Assembly.......................................................... 4-62 4-43 Brakes...................................................................................... 4-66 4-44 Brake Shoes ............................................................................ 4-67 4-45 Shock Absorbers...................................................................... 4-70 4-46 Springs..................................................................................... 4-72 4-47 Brake System........................................................................... 4-74 4-48 Surge Actuator Assembly......................................................... 4-76 4-49 Hand Brake Lever.................................................................... 4-78 4-50 Brake Cable ............................................................................. 4-81 4-51 Intervehicular Cable ................................................................. 4-83 4-52 Wire Harness Assembly ........................................................... 4-85 4-13