CAUTION TM     10-3930-643-10 2-24. OPERATION    IN    DUSTY    OR    SANDY    AREAS.-Continued f. At    Halt. When    the    forklift    is    not    in    use,    cover    the    open    ROPS operator’s    compartment,    and    utilize    whatever    means    are    available    to    protect    the engine    compartment    from    the    entry    of    windblown    dust    or    sand. 2-25. OPERATION    IN    SALTWATER    AREAS. Keep    forklift    as    clean    as    possible.    After use, wash    with    fresh    water.    Keep    all    lubrication    points    clean. Refer    to organizational    maintenance. Keep    all    wiring    and    connections    clean    and    free from corrosion. 2-26. OPERATION    AT    HIGH    ALTITUDES. Keep    a    constant    watch    on    coolant    level.    If coolant    is    needed    notify    organizational    maintenance.    Keep    close    watch    on    engine instruments    during    operation. NOTE:    Engine    will    operate    at    less    than    peak performance    at    high    altitudes. 2-27. OPERATION    IN    SNOW. Keep    fuel    tank    full fuel    filler    when    servicing    the    forklift. ,    and    keep    snow    and    ice    away    from When    parking    an    open    ROPS    forklift    the operator’s    compartment should    be    protected    or    the    forklift    parked    under shelter. 2-28. FORDING. This    forklift    may    be    safely    subjected    to    depths    of    60    inches of    water    including    wave    action.    Do    not    exceed    this    depth. a.    Before    Fording. (1)    Check    the    depth    of    the    water    allowing    for    the    consistency    of    the bottom. (2)    Raise    forks    above    water    level. Engage    or    disengage    the    fan    only    when    the    engine    is operating    at    low    idle. b. Entering    Water. (1)     Turn     the     fan     switch     to     OFF     if     chance     of     water     level     entering     the     fan sweep. (2)    Increase    engine    speed    to    reduce    danger    of    stalling. N O TE Leave    transmission    selector    in    range    1. (3)    Enter    the    water    slowly    to    minimize    surges    of    backwash    into    the    engine compartment.    Speed    must    not    exceed    three    to    four    mph.    If    stalling    occurs, notify     organizational     maintenance. (4)    When    operating    with    the    fan    off,     watch    the    water    temperature    gage closely.    If    overheating    is    indicated, immediately    move    to    more    shallow    water and   turn   the   fan   on. 2-56