TM 5-3895-374-24-2 B:  Breather; D:  Drain; L: Oil Level Pug; P: Plug Fig.  2-Mounting Positions. Note:  If motor mount, motor and sheaves are to be  installed  on  reducer  before  mounting  screw conveyor   drive   to   trough   end,   bypass   step   2; perform steps 3 and 4, and then return to step 2. 2. On   sizes   SCXT3A,   SCXT4A,   and   SCXT5B,   use lifting   tab   to   hoist   the   screw   conveyor   drive   into position.    Slide  shaft  into  screw  and  adapter  over trough end studs.  Only one set of adapter holes will fit over trough end studs.  If the mounted position of the screw conveyor  drive  varies  by  15°  from  any  of the four horizontal mounting positions  in  Fig.    2,  an incorrect set of holes has been selected for coupling adapter   to   reducer.      This   can   be   corrected   by removing adapter screws and rotating reducer to its proper    position.        Reinstall    and    tighten    adapter screws  to  torque  specified  in  Table  4  on  page  8. Install  lockwashers  and  tighten  nuts  on  trough  end studs.  Attach drive shaft to screw. 3. Remove    the    three    bolts    from    reducer    housing required for mounting the SCD Motor Mount.  Place the  motor  mount  in  position  and  install  the  three housing    bolts    supplied    with    the    motor    mount. Tighten bolts to torque specified in Table 4 on page 8. 4. Install motor, drive sheave and driven sheave so that driven sheave is as close to the reducer housing as practical.    Install  V-belt  and  tension  with  the  four adjusting screws provided on the SCD Motor Mount. Install     belt     guard.          Make     required     electrical connections for motor. DANGER The   user   is   responsible   for   conforming with  the  National  Electrical  Code  and  all other    applicable    local    codes.        Wiring practices,    grounding,    disconnects    and overcurrent   protection   are   of   particular importance.        Failure    to    observe    these precautions  could  result  in  severe  bodily injury or loss of life. 5. Because reducer is shipped without oil, it is necessary to add the proper amount before operating the drive.  Use a high grade petroleum base, rust and oxidation inhibited (R & O) gear oil-see lubrication tables. CAUTION Unit  is  shipped  without  oil.    Add  proper amount of  recommended  lubricant  before operating.          Failure     to     observe     these precautions could result in damage  to,  or destruction of, the equipment. 6. Retighten bolts and pipe plugs after a few days operation. This prevents oil leakage. LUBRICATION Under  average  industrial  operating  conditions,  the lubricant   should   be   changed   every   2500   hours   of operation   or   every   6   months,   whichever   occurs   first. Drain  reducer  and  flush  with  kerosene,  clean  magnetic drain plug and refill to proper level with new lubricant. CAUTION Too  much  oil  will  cause  overheating and too little will result in gear failure. Check oil level regularly. CAUTION Extreme  pressure  (EP)  lubricants  are not recommended for average operating     conditions.          Failure     to observe these precautions could result in damage to, or destruction of, the equipment. Under  extreme  operating  conditions,  such  as  rapid  rise and   fall   of   temperatures,   dust,   dirt,   chemical   particles, chemical fumes, or oil sump temperatures above 2000F, the oil  should  be  changed  every  1  to  3  months  depending  on severity of conditions. CAUTION Do     not     use     oils     containing     slippery additives such as graphite or molybdenum     disulfide     in     the     reducer when  backstop  is  used.    These  additives will    destroy    sprag    action.        Failure    to observe these precautions could result in damage to, or destruction of, the equipment. page 3-790