TM 1-1500-204-23-1 (3) Remove    propeller,    or    clean    propeller control   systems,   depending   on   condition   or   time   in service. (4) Drain    fuel    from    metering    system    and connecting    lines    to    eliminate    fuel    spillage    during removal. (5) Remove    remote    fuel    pump    adapters, propeller  hub  attaching  parts,  starters,  ignition  analyzer synchronizer,   generators,   vacuum   pumps,   air   pumps, hydraulic pumps, propeller governors, and engine driven fuel pump. (6) Forward   engine   accessories   to   depot   in separate containers. (7) Install  cover  plates  and  plugs  in  engine and    accessory    openings.        Plug    or    cap    all    lines disconnected to accomplish engine removal. (8) Review TB 55-1500-328-25 for determination of accessories to accompany engine. (9)Lubricate exhaust port studs and nuts. c. Preparation  for  installation.    In  addition  to  the preparations    outlined    in    paragraph    a,    the    following examinations must be made prior to Installation. (1) Examine  any  fuel,  oil,  or  hydraulic  lines for serviceability Particular emphasis should be given to all lines that run through firewall. (2) Ensure that all disconnected lines, hoses, control   rods,   cables,   and   wiring   on   firewall   are   In appropriate position required for connection to engine. d. Installation.      Procedures   to   be      followed   in installing   the   engine   will   vary   according   to   type   of engine and aircraft involved and whether or not a power package   is   used.      The   general   procedure   contained herein  and  in  the  specific  engine  maintenance  manual will apply. (1) Swing engine into position with a suitable hoist    and    Install    engine    mounting    bolts.        Tighten mounting bolts to specified torque value. (2) Connect    magneto    ground    wire,    install properly prepared carburetor, and connect fuel lines. (3) Attach main oil line to oil pump Inlet, then connect oil scavenge line, oil tank vent line, oil pressure gauge line, and any other required oil lines. (4) Connect   and   adjust   throttle   control   and carburetor air heater control. (5) Install  and  adjust  propeller  governor  and control. (6) Install  propeller.    Tighten  retaining  nut  to specified torque value. (7) Connect,   check,   and   safety   any   other lines and controls which are required on the aircraft. (8) Accomplish depreservation run in accordance with paragraph 7-13. (9) Lubricate exhaust port studs and nuts. 7-11.        Engine    Mounting    Systems.        The    engine mounting system consists primarily of an engine mount and    vibration    dampers.        The    basic    engine    mount consists  of  a  welded  chrome-molybdenum  steel  tubing structure  rigid  enough  to  carry  forces  Imposed  by  the engine.      Vibration   Isolators   or   dampers   are   used   to eliminate  the  transmission  of  excessive  vibration  from the    engine    to    the    aircraft    structure.        Perform    the following procedures for general maintenance of engine mounting systems. a. Visually    inspect    engine    mounting    system    in accordance    with    applicable    Inspection    requirements manual. NOTE When  rubber  parts  of  Isolators  must be cleaned to establish their physical condition,    use    soap,    A-A-50,    and water only. b. Repair  of  engine  mounting  system  is  limited  to the following steps. (1) Repair distorted, bent, cracked, or chafed areas. 7-39