TM 10-3930-643-10 1-9. LOCATION    AND    DESCRIPTION    OF    MAJOR    COMPONENTS.    -Continued L e g e nd 1. 2. 3. 4. Transmission    and    drive    shaft A x l e s  a n d  t i r es Brakes Body    and    towing    attachment i. Transmission    and    Drive    Shafts    (l). Three    speeds    in    both    forward    and reverse,     has     transmission     disconnect     feature     which     permits     neutralizing     trans- mission.    Four    drive    shafts    are    used    to    transmit    power    to    front    and    rear    axles. j. Axles    and    Tires    (2). Single    reduction    type    axles;    pneumatic    tires. k . Brakes     (3). Service    brakes    are    air    over    hydraulic    caliper-type    disc brakes.    The    parking    brake    is    a    spring    actuated,    air    pressure    released,    shoe- type    brake,    mounted    on    the    rear    drive    line. l. Body    and    Towing    Attachments    (4). Two    section    body    consisting    of    front and    rear    chassis;    towing    attachments    include    pintle    hook    and    tow    bar    located    at rear     of     truck     (S/N     2001     and     above). 1-10. DIFFERENCES    BETWEEN    MODELS. Two     models     of     the     M10A     are     covered     in     this manual.    The    difference    is    noted    by    serial    number.    One    is    indicated    as    S/N    2000 and     below, the     other     as     S/N     2001     and     above.     The     following     chart     lists     the     main differences. A B C D E F G H I J K L M N O C O M P O N E N T S 2000    and    below Rollover    Protective    Structure X Cab,     Rollover     Protective     Structure Backup     Alarm Engine    Oil    Sample    Valve Transmission    Oil    Sample    Valve Boom    Prop H e a t er D e f r o s t er W i p e rs Fuel    and    Water    Separator    Filter Service     Brake     Pressure     Converter Warning    Signal O  Ol    BO  X Key    Operated    Master    Disconnect and    Ignition    Switches X Rain Cap on Exhaust Pipe X Key    Not    Required    For    Master Disconnect     and     Ignition     Switches 2001    and    above X X X X X X X X X X X X 1-8

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