TM 5-3895-373-34 2.42 REPLACE/REPAIR  AUXILIARY PUMP - Continued. B. DISASSEMBLE Continued. 3. REMOVE    DRIVE    GEAR    ASSEMBLY,    IDLER GEAR ASSEMBLY, KEYS, SHAFTS, AND PREFORMED PACKING FROM ADAPTER PLATE ASSEMBLY. WARNING Hydraulic oil can be moderately flammable  and  can  be  an  irritant  to the skin, eyes, and respiratory system.    Avoid  prolonged  exposure. Eye    protection    and    rubber    gloves must   be   worn   when    working    with hydraulic oil. NOTE Position of indent markings on gears is not relevant  to  reassembly.  Gears must      be   matchmarked   for   proper reassembly. a. Use a marker to matchmark gear teeth positions for   alignment   during   reassembly.      Matchmark drive    gear    (33),    idler    gear    (34),    drive    gear assembly (35), and idler gear assembly (36). b. Remove drive gear (33), idler gear (34), and key (37). c. Remove  drive gear assembly (35) and idler gear assembly (36) from adapter plate assembly (22). d. Remove    preformed    packing    (38).        Discard preformed packing. 4. REMOVE    DIAPHRAGM,    BACKUP    GASKET, PROTECTOR    GASKET,    DIAPHRAGM    SEAL, AND PREFORMED PACKING FROM ADAPTER PLATE ASSEMBLY. CAUTION Use    caution    when    removing    seals and  preformed  packings.    Scratched or   dented   seal   grooves   can   cause bypass leakage. Do not use excessive force.  Use an o-ring tool to remove seals and preformed packings. a. Use an o-ring tool to remove diaphragm (39),   backup   gasket   (40),   protector   gasket   (41),   and diaphragm  seal  (42)  from  adapter  plate  assembly    (22). Discard  diaphragm,  backup    gasket,  protector  gasket, and diaphragm seal. b. Remove preformed packing (43) from backplate   assembly   (23).      Discard   preformed packing. GO TO NEXT PAGE 2-570