1

2 DRINKS AND FOOD BREAKS UNIFORM TOOLS RAGS HOMEWORK ADMINISTRATIVE

3 SAFETY WALKING (DO NOT TRIP ON GUN STANDS) IN CASE OF FIRE SLEEPING RINGS & WATCHES

4 ORGANIZATIONAL MAINTENANCE OF THE M240C MACHINE GUN. TERMINAL LEARNING OBJECTIVE

5 ENABLING LEARNING OBJECTIVES 1.Explain the principles of operation of the M240C machine gun. 2.Perform troubleshooting procedures on the M240C. 3.Identify the use of special tools and equipment required for organizational maintenance of the M240C.

6 ENABLING LEARNING OBJECTIVES CONTINUED 4. Perform organizational PMCS on the M240C machine gun. 5. Perform organizational level disassembly and assembly of the M240C machine gun. 6. Identify organizational maintenance repair parts for M240C machine gun.

7 ENABLING LEARNING OBJECTIVES CONTINUED 7. Maintenance Allocation Chart. 8. Source Maintenance and Recoverability Codes. 9. Identify special tools and their uses.

8 EVALUATION 1.Open book exam, must score a minimum of 80% to pass. 2. Hands-on exam, must score a go in all required areas to receive an overall go on the exam.

9 M240 FAMILY M240 M240C M240B M240G M240E1

10 Student Handout TM –Operators manual TM &P –Unit/ Direct Support Maintenance manual COAX MANUALS

11 OPERATORS MANUAL CH 1 – Introduction –Sec IGeneral Information –Sec II Equipment description –Sec III Technical principles

12 MAJOR COMPONENTS BARREL ASSEMBLY BUFFER ASSEMBLY DRIVING SPRING ROD ASSEMBLY BOLT AND OPERATING ROD ASSEMBLY

13 MAJOR COMPONENTS TRIGGER HOUSING ASSEMBLY COVER ASSEMBLY FEED TRAY RECEIVER ASSEMBLY

14 WEIGHT10.3 KG(22.2 LB) RATE OF FIRECYCLIC SUSTAINED RAPID RANGE 3,725 METERS MAX EFFECTIVE900 METERS EQUIPMENT DATA

15 OPERATORS MANUAL CH 2 – Operating instructions –Sec IPMCS –Sec II Operation under usual conditions –Sec III Operation under unusual conditions

16 CH 3 – Maintenance Instructions Sec ILubrication instructions Sec IITroubleshooting procedures Sec IIIMaintenance procedures OPERATORS MANUAL

17 CH 4 – Ammunition –M61 AP –M80 Ball –M62 Tracer –M172 Dummy –M82 Improved Blank OPERATORS MANUAL

18 App A – References App B – Components of end items and BII lists –Sec 1 Introduction –Sec 2 Components of end item –Sec 3 Basic Issue Items OPERATORS MANUAL

19 App C – Additional Authorization list App D – Expendable/Durable supplies and material list –Sec 1 Introduction –Sec 2 Expendable/Durable Supplies and Material list OPERATORS MANUAL

20 CHECK ON LEARNING 1.Which model in the 240 family feeds from the right and were would I find this information? 2. Which way does the number on the gas regulator face in order for that number to be used? 3. During operator level PMCS when would the receiver assembly be considered not fully mission capable? 4. As a crew member you noticed that your M240C Fails to feed how many steps are there to correct this malfunction?

21 Unit/ Direct Support Maintenance Manual CH 1 – Introduction –Sec I General Information –Sec II Equipment description and data –Sec III Principles of Operation

22 CH 2 – Unit Maintenance Instructions –Sec IRepair parts, Special tools, TMDE, and Support equipment –Sec IIService upon receipt –Sec IIIPMCS –Sec IVTroubleshooting –Sec VMaintenance procedures Unit/ Direct Support Maintenance Manual

23 CH 3 – Direct Support Maintenance Instructions –Sec IRepair parts, Special tools, TMDE, and Support equipment –Sec IITroubleshooting –Sec IIIMaintenance Procedures –Sec IVPre-embarkation inspection of material in units alerted for overseas movement Unit/ Direct Support Maintenance Manual NOTE: Stay out of this chapter, this is not your level of maintenance.

24 App A – References App B – Maintenance Allocation Chart –Sec IIntroduction –Sec IIMaintenance Allocation Chart –Sec IIITools and Test equipment requirements –Sec IVRemarks Unit/ Direct Support Maintenance Manual

25 App C – Unit and Direct Support Maintenance Repair Parts and Special Tools List –Sec IIntroduction –Sec IIRepair Parts List –Sec IIISpecial Tools List App D – Expendable/ Durable Supplies and Materials List Unit/ Direct Support Maintenance Manual

26 SMR CODE Source Code – (First two positions) –Tells you how to get an item needed for maintenance, repair, or overhaul of an end item/ equipment 1,2 xx x Source Code Maintenance Code Recoverability Code

27 SMR CODE Maintenance Code – (3rd & 4th Position) –3 rd Tells you the lowest maintenance level authorized to remove, replace, and use the item. –4 th Tells you whether or not the item is to be repaired and identifies the lowest maintenance level with the capability to do complete repair (I.e., perform all authorized repair functions) xx 3,4 x Source Code Maintenance Code Recoverability Code

28 SMR CODE Recoverability Code – (5th position) –Who determines disposition action on an unserviceable item xx 5 Source Code Maintenance Code Recoverability Code

29 SMR CODE PA F Z (Source Code) - Stocked items; use the applicable NSN to request/requisition items with these source codes. They are authorized to the level indicated by the code entered in the 3d position of the SMR Code. (1st Position of the Maintenance Code) - Intermediate Direct support level can remove, replace, and use the item. (2nd Position of the Maintenance Code) - Non-repairable. No repair is authorized. (Recoverability Code) - Non-repairable item. When unserviceable, condemn and dispose of the item at the level of maintenance shown in the 3rd position of the SMR Code.

30 USABLE ON CODE G69 M240 L04 M240C AG8 M240E1 BB2M240B BC6M240G

31 SCRAPER COMBINATION REGULATOR Used to clean the gas regulator plug.

33 REAMERS, CLEANING Used to clean carbon from the gas inlet holes on the gas plug regulator and the gas port hole on the barrel.

35 TOOL, COMBINATION SCRAPER/EXTRACTOR Used to clean carbon from piston head cavity of the operating rod and gas cylinder end of the receiver body. This tool is also used to remove and install the extractor on the bolt.

37 TOOL, REMOVING EJECTOR Used to remove and install the ejector on the bolt.

40 1. Cover Assembly 2. Pin, Spring 3. Tray, Feed 4. Receiver Assembly 5. Buffer Assembly 6. Pin, Spring 7. Trigger Housing Assembly 8. Rod Assembly, Driving Spring 9. Access Cover 10. Rod Assembly, Operating 11. Pin, Spring 12. Pin, Spring

Pin, Firing 14. Bolt, Breech Assy 15. Spring Pin 16. Extractor Cartridge 17. Spring Helical 18. Spring Assy 19. Ejector Cartridge 20. Plunger Extractor 21. Flash Hider 22. Collar, Gas 23. Barrel, Machine Gun 24. Plug, Gas Regulator

42 CHECK ON LEARNING

43 ORGANIZATIONAL MAINTENANCE OF THE M240 MACHINE GUN