TM 10-3930-664-24 2. Tag  and  disconnect  short  tube  (4)  from  brake adapter      (5).      Remove      brake      adapter   from inching   cover   (6).      Remove   plugs   (7)   only   if replacement is required. 3. Unscrew inching cover (6) from body (8). WARNING Inching  body  is  under  tension  from return spring. Use care when removing    inching    body    to    prevent damage or injury. 4. Unscrew     assembled     inching     body     (8)     and actuator  rod  (9)  from  transmission  (18).    Place on a clean work surface for disassembly. 5. Remove upper piston (10), piston seal (11), and lower piston (12) from actuator rod (9). 6. Remove  packing  (13)  and  body  seal  (14)  from inching body (9).  Discard packing. 7. Remove actuator rod (9), return spring (15) and O-ring  (16)  from  inching  body  (8).    Discard  O- ring.  Remove spring (17). B.  CLEANING Clean   inching   valve   components   in   accordance   with paragraph 1-24. C.  INSPECTION Inspect   inching   valve   components   in   accordance   with paragraph 1-24. D.  INSTALLATION 1. Lubricate      new      O-ring      (16)      with      clean lubricating oil and install.  Install actuator rod (9) and return spring (15) into inching body (8). 2. Lubricate new packing (13) with clean lubricating oil.      Install   packing   and   body   seal   (14)   into inching body (9). 3. Install  lower  piston  (12),  piston  seal  (11),  and upper piston (10) onto actuator rod (9). 4. Screw assembled inching body (8)  and  actuator rod (9) into transmission (18). 5. Screw  inching  cover  (6)  onto  body  (8).    Install adapter (5) and connect short tube (4). 3-118