TM 5-3895-374-24-2Fig. 1-Assembly.NOTE:A Screw Conveyor Drive consists of three sub-assemblies listed below.1.Reducer-Includes speed reducer, shaft retainer,retainer bolt and lockwasher.2.Adapter Assembly-Includes adapter bolts,lockwashers, a lip type seal, 2 braided type seals and sealretaining ring.3.Drive Shaft-Includes shaft and key.Make certain none of the parts have been damaged inshipment. Any shipping damage should be promptly reportedto the carrier. Read all instructions in this manual beforeattempting to assemble or install the Screw Conveyor Drive. Itis important that assembly be performed in the followingsequence and that each step be completed before continuingto the next.ASSEMBLY1. Place reducer on blocks that it lays flat with the input shaftdown.2. Position adapter on reducer output hub so that small end(end with 12 holes) rests on reducer. Select the 4 mountingholes to match the shaft used (See Fig. 1). Note: "A"adapters used on SCXT1 and SCXT2 reducers with 1-1/2"drive shafts have only 4 holes on the small end.3. Place adapter screws and lockwashers thru adapter andthread into reducer. Do Not Tighten.4. Select either lip type or braided type seals and install asfollows:Lip Type Seals.Place seal in adapter so that spring facesout. Seal should be tapped evenly into place in the adapterwith a soft hammer, applying force only on the outer corner ofthe seal. Fill cavity between lips of seal with grease. Installseal retainer ring by tapping with a hammer. Apply grease toadapter section of shaft (middle section). Slide shaft,keyseated end first, into adopter and thru reducer. Note: Beextremely careful when sliding adapter section of shaftthru seal to prevent seal lips from being damaged orrolled over.Braided type seals. Flatten both seals with a soft hammer.Place seals in adapter, one on top of the other with jointsoffset from each other. Lay retaining ring loosely on top ofseals. Slide shaft, keyseated end first, into adapter and thrureducer. Take care to clear the seals with the adapter sectionof the shaft. Once shaft has bottomed, seat retainer ringby simultaneously hitting the face of the ring on oppositesides of the shaft with two hammers.5. Carefully place reducer on its side. Rotate shaft toalign keyseats in shaft and output hub and install key.install shaft retainer, lockwasher and bolt. Tighten bolt totorque specified in table 3 on page 5.6. Lay reducer on blocks with input shaft down andtighten adapter bolts to torque specified in table 3 onpage 5.7. If waste packing is to be used it may be installed thruaccess hole provided in the adapter. Waste packing, notfurnished with the Screw Conveyor Drive, may be usedas a separate seal option or in combination with eitherthe lip or braided seals.INSTALLATION1. Determine the running position of the ScrewConveyor Drive. Running positions are shown in fig. 2.Note that the reducer is supplied with 7 plugs; 5 aroundthe sides of the reducer for horizontal installations and 1on each face for vertical installations. These plugs mustbe arranged relative to the running position as follows:Horizontal Installations-Install the magnetic drain plugin the hole closest to the bottom of the reducer. Throwaway the tape that covers the filler/’ventilation plug inshipment and install plug in topmost hole. Of the 3remaining plugs on the sides of the reducer, the lowestone is the minimum oil level plug.Vertical Installations-Install the filler/’ventilation plug inthe hole provided in the top face of the reducer housing.Use the hole in the bottom face for the magnetic drainplug. Of the 5 remaining holes on the sides of thereducer, use a plug in the upper housing half for theminimum oil level plug.Fig. 2-Mounting Positions.page 3-781
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