TM9-1005-229-35

TM 9-1005-229-35Warning. Avoid skin contact. The compoundshould be washed off thoroughly with running water if it comes in contact with theskin. A good lanolin base cream, after exposure to compound, is helpful. The use of glovesand protective equipment is recommended.(1) Using a suitable container, fill withfresh compound.(2) Before soaking a component in compound, remove grease, dirt, and oil. Place partsto be cleaned in container, making certain theyare completely immersed.(3) Soak for 2 to 16 hours. Remove partsand allow to drain. Rinse with water or solvent. To effectively remove carbon, brush withstiff bristle brush under running water. Allowto dry, then apply a light coat of general purpose lubricating oil (PL special).g. New materiel and component parts received from storage for immediate use mayhave heavy accumulations of grease, Removethis residue with waste or clean wiping clothssaturated with dry cleaning solvent (SD). Dryand lubricate as specified in paragraph 2—13h. For general cleaning instructions on allparts, refer to TM 9–208–1.2-9. General Precautions in Cleaninga. Dry cleaning solvent is flammable andshould not be used near an open flame. Fireextinguisher should be readily available whenusing this material. In addition, this materialevaporates quickly and has a drying effect onthe skin. When used without rubber gloves, itrelay cause cracks in the skin, and in the easeof same individuals, a mild irritation or inflammation. Use only in well-ventilated places.b. The use of diesel fuel oil, gasoline orbenzene (benzol) for cleaning the weapon isprohibited.c. Store rifle bore cleaning compound (CR)in a warm place, if practical. Do not dilute oradd anti freeze.2-10. Finished SurfacesAll treated surfaces will be refinished tomatch the appearance of new parts.Note. Sandblasting is permissible on nonworking surfaces for removal of dirt and rust.2-11. Removal of Burs From Threads andWorking Surfacesa. During the entire life of the submachinegun, polishing and stoning are necessary torelieve friction and to remove burs caused byusage. Burs on threads and like surfacesshould be removed with a fine stone, tap orthread chaser. Burs on such working surfacesas the receiver, guide rods, cam surfaces, andreceiver housing area should be removed witha fine stone and polished with crocus cloth.Caution. Care should be observed to stoneevenly and lightly and not remove more metalthan absolutely necessary to maintain correctcontours. Critical dimensions of parts or assemblies must not be altered in any way thatwould affect the functioning or interchangeability of parts.b. Rough spots, scores, galling, and gougeswill be smoothed to enable the part to operatenormally. The finish of the repaired componentwill be approximate of the original finish.2-12. LubricationMake certain all parts are cleaned and driedthoroughly and lubricated by applying a lightcoat of general purpose lubricating oil (PLspecial).Section V. REMOVAL AND INSTALLATION2-13. GeneralFor removal and installation of majorgroups and assemblies refer to TM 9-1005229-12 and figures B–1 and B–2.11

TM 9-1005-229-35Section VI. DEPOT MAINTENANCE PROCEDURES2-14. GeneralDepot maintenance procedures are similarto those pertaining to direct and general support maintenance. However, further details on12depot maintenance of this materiel will be furnished by contacting, Commanding General,Headquarters, U. S. Army Weapons Command,ATTN: A M S W E - S M M - S A , R o c k I s l a n d ,Illinois 61201.

TM 9-1005-229-35CHAPTER 3REPAIR INSTRUCTIONS3-1. GeneralThis chapter provides specific instructionsfor guidance during inspection and repair bydirect and general support maintenance of materiel in the hands of troops in the field, indirt and general support shops, and inalerted units scheduled for oversea duty. Inspections are made for the purpose of: (1)determine the condition of an item as to serviceability, (2) recognizing conditions thatwould cause failure, (3) assuring proper application of maintenance policies at prescribedlevels, and (4) determine the Ability of a unitto accomplish its maintenance and supply mission3-2. Disassembly/Assembly of Major Groupsand Assembliesa. Magazine Assembly, Barrel and GunStock Extension. Refer to TM 9-1005-229-12.b. Bolt and Guide Rod Group. Refer tofigure B-3.c. Trigger Housing Group. Refer to figuresB-4 and B-5.d. Trigger and Sear Group. Refer to figureB-6.e. Receiver Assembly. Refer to figures B-7and B-8.f. Flush Hider Assembly. Refer to figureB-9.3-3. Cleaning, Inspection, and RepairInstructionsa. Refer to paragraph 2-9 for cleaning instructions.b. Refer to table 3-1 for inspection and repair procedures.c. Complete inspection of all parts is notalways necessary, good judgment should be exercised pertaining to the degree of inspectionof integral parts within assemblies.Table 3-1. Inspection and Repair ProceduresItemMagazine:InspectionRepairNote. On the new magazines thebase is spot welded to the bodyand disassembly of the magazine,in this case, is not authorized.Inspect base for deformation orwear.Inspect base for burs.Inspect spring for cracks, weaktension and set.Inspect follower for wear.Inspect follower for burs.Replace magazine (1, figs B-1and B-2) if components areworn, broken or damaged.Remove burs as described inparagraph 2-11.Replace magazine (1, figs B-1and B-2) if spring is cracked,set or tension weak.Replace magazine if follower isworn, broken or damaged.Remove burs as described in paragraph 2-11.13

TM 9-1005-229-35Table 3-1. Inspection and Repair Procedures-Cont.ItemGun stock extension:InspectionInspect the body for dents, cracks,and fit in receiver.Inspect for deformation andwear.Inspect for burs.BarrelExamine barrel bore for wear,pits and bulges.Check serrations on barrel collarfor wear and damage.Inspect the collar; make certainit is secure to the barrel.Bolt and guide rod group:Inspect guide rod retaining clipfor wear and damage.Inspect guide rod locating plate;make certain it is not bent orburred at the holes.Inspect extractor pin for wearand damage.Check to see that the extractoris clean and free of carbon,is not worn and does not bindin bolt.Check the bolt for wear andburs. Check the firing pinpoint; make certain it is notworn as to cause misfiring.Inspect the guide rods to see thatthey are straight, smooth andare secured firmly to thelocating plate.Inspect the driving springs forfunction, cracks and set.Note. Some bolts 5653429, for theM3 Submachine Gun have theletter "H" stamped on the surface indicating they were ofearly manufacture and wereheat treated to increase thehardness. However, all boltsnow in use are serviceable,whether or not they have theletter “H” stamped on the surface.14RepairReplace magazine if body isdamaged.Replace stock extension (2, figsB-1 and B-2) if damaged.Straighten if bent.Remove burs.Replace barrel (3, figs B-1 andB-2) if lands are worn as toaffect the accuracy of theweapon. Replace barrel, if pitsare as wide as lands or aremore than three-eights of aninch long.Replace barrel if threads arestripped or if serrations areworn affecting the security ofbarrel to the receiver.Replace the barrel if collar is notsecure. Remove burs as indicated in paragraph 2-11.Replace worn or damaged retaining clip (1, fig B-3).Replace worn or bent locatingplates (2, fig B-3).Replace worn or damaged pin(4, fig B-3).Replace worn or damaged extractor (5, fig B-3).Replace bolts (6 or 8, fig B-3)that contain worn firing pins.Replace bolt if sear notch ischipped or worn.Straighten guide rods if bent.Replace guide rods (9, figB-3) if rods are not secureto locating plate.Replace springs (10, fig B-3)if cracked, weak or set.

TM 9-1005-229-35Table 3-1. Inspection and Repair Procedures-Cont.ItemHousing group:Trigger and sear group:InspectionInspect all parts for damageand wear which might causemalfunction. Inspect for burs,rust, foreign matter in recesses,deformation, and free actionwith mating partsInspect housing for deformationand dents.Inspect ejector for looseness,damage, and binding in slotof bolt (M3 only).Function the retracting handleto see that the retracting leverpawl is caromed down and thelever rotated forward is bythe action of the retractinglever pawl spring.Inspect the spring for distortion,set, and tension. Check to seethat the retracting lever pawlstop is not worn.Inspect the retracting handle forburs, wear, rust, and contactingside of receiver.Inspect the retracting leverspring for function, fracture,and set. Check ends; makecertain they are not bent orbroken.Inspect the retracting lever pawlspring for bends, distortion,and if it is secure.Inspect the oiler clip of thehousing for wear, damage, andlooseness of housing.Inspect sear for wear and burs.Inspect trigger spring for function,cracks, and set.Receiver assembly:Inspect the trigger and conectorfor dents, deformation andfunctioning. Make certainthe connector rotates on therivet.Inspect the collar for burs andwear.Inspect the catch for functioning,wear, and damage.Inspect spring for cracks, tension,and set.RepairReplace all broken, worn, andunserviceable parts. Removeburs and rust as indicatedin paragraph 2-11.Straighten dents, replace if notrepairable,Straighten point of ejector ifejector is bent and binds inbolt.Replace spring (6, fig B-5).Replace lever assembly (4,fig B-5) if pawl stop isworn.Replace if broken or worn;remove burs and rust asindicated in paragraph 2-11.Replace spring (3, fig B-5) ifbroken, worn or unserviceable.Replace spring (6, fig B-5) ifbroken, worn or unserviceable.Replace clip (10, fig B-5),if damagedRemove burs from sear (paragraph 2-11). Replace sear(2, fig B-6) if worn or cracked.Replace spring (4, fig B-6) ifcracked or set or if tensionis weak.Remove dents from trigger searconnector; replace (6, fig B-6)if damaged or worn.Replace collar (2, figs B-7 andB-8) if worn. Remove burs(para 2-11).Replace catch (3, figs B-7 andB-8) if worn or damaged.Replace spring (4, figs B-7and B-8) if cracked, set ortension is weak.15

TM 9-1005-229-35Table 3-1. Inspection and Repair Procedures-Cont.ItemReceiver assembly-cont.InspectionInspect for worn, or bentretaining-pin.Inspect pin for burs and wear.Inspect the cover to see if itoperates freely and is securedfirmly to recesses, Inspect forloose rivets and make certainthe safety is not worn.Inspect the cover spring. Makecertain it retains the coverand is not worn, burred anddeformed and that it issecurely retained by the rivets.Inspect the retaining strap, makecertain it is secured to thereceiver.16RepairReplace pin (1, figs B-7 andB-8) if bent or worn.Remove burs (para 2-11), replaceif bent or worn.Replace rivets (7, figs B-7 andB-8) on cover assembly ifloose.Note. To install cover spring,insert the two 1/8 x 3/16flathead solid rivets, with theheads on the inside of thereceiver. Place the cover springon the rivets and positionthe receiver on an improvisedriveting anvil. Peen the endsof the rivets with a ball peenhammer and drift punch untilthe ratchet spring is secure.Replace cover spring (8, fig B-7and 9, fig B-8), if weak orloose on receiver.Replace retaining strap (9, figB-7 and 10, fig B-8) if loose,broken, or missing.Inspect the ratchet spring fortension, retaining action withbarrel, and for wear. Checkto see that it is riveted securelyto the receiver (fig 3-1).Replace ratchet spring (10, figB-7 and 11, fig B-8) if crackedor tension is weak. Replacerivets (7, figs B-7 and B-8).To install the ratchet spring(10, fig B-7 and 11, fig B-8)insert two 1/8 x 3/16 flathead solid rivets, with theheads on the inside of thereceiver. Place the ratchetspring on the rivets andposition the receiver on theimprovised riveting anvil.Peen the ends of the rivetsuntil the ratchet spring issecure.Inspect the barrel bushing fordamaged or stripped threads.Replace weapon if barrelbushing has stripped threads.Inspect the weld inside receiver;make certain it does notinterfere with the movement ofthe bolt.Replace weapon if welds interferewith movement of bolt or ifcracked.Inspect the receiver for dentsor cracks.If receiver is bent or dentedso as to restrict the movementof the bolt, it will be declaredunserviceable.

TM 9-1005-229-35Table 3-1. Inspection and Repair Procedures-Cont.ItemReceiver assembly - Cont.InspectionRepairInspect oiler cap and nut onSubmachine Gun M3A1 forwear or stripped threads andthe oiler for evidence of leaksor stripped threads.Inspect magazine well of receiverfor burs or being bent.Flash hider assembly:Inspect the wing nut for strippedthreads and damage.Inspect washer for wear anddamage.Inspect the setscrew for strippedthreads, burs and wear.Inspect the flash hider for dents,deformation, and cracks.Inspect ring of flash hider,make certain it is welded toflash hider.3-4. Trigger Pull TestAfter final assembly of the submachinegun, check the trigger pull using trigger pullmeasuring fixture 7274758 (fig. 2-1) in accordance with instructions indicated below.Replace oiler cap (11, fig B-7)nut (13, fig B-7) if worn orif threads are stripped.Replace oiler (15, fig B-7)if it leaks or has strippedthreads.Remove burs in receiver well(para 2-11). Replace receiverif dents in magazine wellcannot be fixed so as not toimpede magazine.Replace wing nut (1, fig B-9)if threads are stripped ordamaged.Replace washer (2, fig B-9)if worn or damaged.Replace setscrew (3, fig B-9)if threads are stripped ordamaged.Replace flash hider (6, figB-9) if cracked or dented.Replace flash hider (6, fig B-9)if ring is loose on flash hider.Step 1. With the safety unlocked, rest theweight on the floor and hook the notched portion of the rod over the center portion of thetrigger.Note. Make certain the rod does not contact or rubany portion of the submachine gun and that rod andbarrel are parallel.Step 2. Carefully raise the weight from thefloor. When using less than the 4 poundweight (minimum), the trigger should notfall. When using the 7.5 pound weight (maximum), the trigger should fall.Caution. A slow and steady lift must beutilized to assure a true and accurate check.3-5. Correcting Trigger PullCaution. While stoning, critical dimensionsshould not be altered.Figure 3-1. Checking spring action of ratchet spring.Refer to table 3–2 for trigger pull correctionprocedures.17

TM 9-1005-229-35Table 3-2. Trigger Pull Correction ProceduresMalfunctionTrigger pull too lightProbable causeWorn searWorn sear notchBurred searTrigger pull too heavyBurred sear notch18Corrective actionReplace sear (2, fig. B-6).Replace bolt (6 or 8 fig. B-3).Stone searReplace sear (2, fig B-6).Stone sear notch on bolt, replacebolt.

TM 9-1005-229-35CHAPTER 4FINAL INSPECTION4-1. GeneralFinal inspection is performed on the materiel, after repair has been completed, to determine that the weapon meets serviceabilityrequirements prescribed in the repair instructions, chapter 3. In performing final inspection, the inspector will make certain that allrepairs have been completed and that theweapon is intact and that all components andassemblies are secure and function properly.Listed below are specific inspection proceduresto be followed during this inspection.4-2. Visual Inspection Proceduresa. Inspect the magazine, make certain it isretained securely to the gun.b. Inspect the barrel, see that it is securedtightly to the receiver.c. Inspect the hewing group, make certainit is secure to the receiver.d. Check the trigger pin and sear pin, seethat they are retaining the trigger and seargroup within receiver.e. Inspect sight, make certain it is not bentor distorted.f. Check over–all appearance of the gun.The metal finish should range from a denseblack to a medium light gray. Sight must havea dull black or gray finish.4-3. Functional Inspectiona. Acutate magazine catch for proper function.b. Check functioning of trigger.c. Acutate stock catch, make certain it worksin conjunction with stock.d. Function cover assembly, see that it snapsin closed position on receiver and safety holdsbolt in locked position.e. Check trigger with trigger pull measuring fixture 7274758 (fig. 2–1). Refer toparagraph 3-4.f. Trigger pull can be corrected by the selective assembly of related parts. Refer to table3-2.4-4. Hand FunctionFollowing repair, hand function submachinegun. Weapons which fail to function properlyare to be corrected by the replacement of defective component or by performing such repair as required.19

TM 9-1005-229-35APPENDIX AREFERENCESA-1. Publication IndexesThe following indexes should be consulted frequently for the latest changes or revisions ofreferences given in this appendix and for new publications relating to materiel covered in thistechnical manual.Index of Army Films, Transparencies, GTA Charts, and RecordingsMilitary Publications:Index of Administrative PublicationsIndex of Blank FormsIndex of Doctrinal, Training, and Organizational PublicationsIndex of Supply Catalogs and Supply Manuals (excluding types7, 8, and 9)Index of Technical Manuals, ‘Technical Bulletins, Supply Manuals(types 7, 8, and 9), Supply Bulletins, and Lubrication OrdersU.S. Army Equipment

SUBMACHINE GUN, CALIBER .45, M3, W/E (1005-672-1767) SUBMACHINE GUN, CALIBER .45, M3A1, W/E (1005-672-1771) This copy is a reprint which includes current pages from Chan