TM 5-3895-374-24-2 Table 2-Oil Recommendations for Average Operating Conditions. OIL VISCOSITY Ratio and Room Temp. Output RPM °Fahr. S.A.E. AGMA ASTM Metric Equiv. No. Lub.  No. SUS@100°F. c St @ 40°C. 25:1-Up to 45 rpm -25 thru 50 10W30 - - - 15:1-Up to 75 rpm 15° thru 50 30 3 417 to 510 90 to 110 9:1-Up to 120 rpm 50 thru 120 40 4 626 to 765 135 to 165 25:1-46 rpm and Up -25 thru 50 10w40 - - - 15:1-76 rpm and Up 15 thru 50 40 4 626 to 765 135 to 165 9:1-120 rpm and Up 50 thru 120 50 5 918 to 1122 198 to 242 REPLACEMENT OF PARTS Dodge  is  prepared  to  repair  Screw  Conveyor  Drive speed   reducers   for   customers   who   do   not   have   the proper  facilities  or  for  those  who  desire  factory  service However, if the customer has access to an arbor press, equipment for heating and shrinking bearings and gears on shafts, and the tools normally found in a maintenance department,  the  Screw  Conveyor  Drive  speed  reducer can easily be disassembled and reassembled by careful attention to the following instructions. Cleanliness is very important to prevent the introduction  of  dirt  into  the  bearings  and  other  parts  of the  reducer.    The  oil  seals  are  of  the  rubbing  type  and considerable care should be exercised during disassembly   or   reassembly   to   avoid   damage   to   the surfaces on which these seals rub.  Any sharp edges on the  input  shaft  or  output  hub  should  be  covered   with adhesive  tape  or  paper  before  performing  any  work  on the unit.  Nicks and burrs on surfaces of the  input  shaft or output hub should be removed. ORDERING PARTS When  ordering  parts  specify  Screw  Conveyor  Drive Size    and    Serial    No.,    part    name,    part    number    and quantity. Parts that must be pressed from shafts or output hub should be removed before ordering parts.  This assures that  those  parts,  if  damaged  during  pressing  operation, will be replaced.  Do not press against the outer race of any ball bearing. It  is  recommended  that  when  a   pinion   or   gear   is replaced,   its   mating   gear   or   pinion   be   replaced   also. This insures that the gear teeth will mesh properly.  If the large  gear   on   the   output   hub   must   be   replaced,   it   is suggested  that  an  output  hub  assembly,  consisting  of  a gear assembled on an output hub, be ordered to secure an output hub with undamaged surfaces on which the oil seals rub.  However, if the old output hub is to be used. carefully     press     the     gear     and     bearing     cones     off. Thoroughly   examine   the   area   under   the   oil   seals   for scratches    or    any    other    damage    resulting    from    the pressing operation.  To prevent leakage at the oil seals, the rubbing area must be smooth. Replacements  for  the  oil  seals  should  be  ordered, due   to   the   probability   of   these   parts   being   damaged during disassembly. If   replacing   an   output   hub   or   input   shaft   on   5A bearing, output hub, input shaft or reducer housing, it  is advisable  to   order   a   set   of   output   hub   or   input   shaft shims because the adjustment of the output hub bearing or input shaft bearing on 5A will be affected. REMOVING  SCREW  CONVEYOR  DRIVE  FROM  THE TROUGH END Disconnect  any  electrical  power  to  the  drive.    Drain lubricant from reducer.  Uncouple drive shaft and screw. Remove  nuts  from  trough  end  studs.    Support  drive  by means  of  hoist  and  carefully  pull  unit  away  from  trough end to slide drive shaft out of screw. DISASSEMBLY 1.  Remove motor from motor mount.  Remove retainer bolt, lockwasher and shaft retainer from drive shaft. Pull    drive    shaft    out    of    reducer    from    adapter    side. Remove adapter. 2.    Position  reducer  on  its  side  and  remove  all  bolts. Gently  top  the  output  hub  and  input  shaft  with  a  soft hammer   (rawhide   not   lead   hammer)   to   separate   the housing    halves.        Open    housing    evenly    to    prevent damage to the ports inside. 3.  Lift shaft, gear and bearing assemblies from housing. 4.    Remove  input  shaft,  output  hub  and  adapter  seals. Remove  output  hub  seal  carrier  and  shims.    Remove output   hub   and   input   shaft   on   5A   bearing   cups   from housing. 5.    Clean  all  ports  in  solvent,  inspect  for  damage  and coat with oil. REASSEMBLY 1. Output Hub Assembly:  Heat gear to 325 to 350:  F. to shrink onto output hub.  Heat bearing cones to 270 to 290 F.  to shrink onto hub. 2.      Countershaft   Assembly:      Shaft   and   pinion   are integral.    Press  gear  and  bearings  onto  shaft.    Press against inner (not outer) race of bearings. 3. Input Shaft Assembly:  Shaft and pinion are integral. Press bearings on shaft.  Press against inner (not outer) race of bearings. 4.    Drive  the  two  dowel  pins  back  into  position  in  the right-hand  housing  half  (adapter  mounting  side).    Place housing half on blocks to allow clearance.  Put the output hub (and input shaft on 5A) bearing  cup  in  place,  make certain that it is properly seated in the housing. page 3-783