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 9-1005-313-10– Operators manual

• TM 9-1005-313-23&P– Unit/ Direct Support Maintenance manual

COAX MANUALS

11

OPERATORS MANUAL

• CH 1 – Introduction

– Sec I General 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

WEIGHT 10.3 KG(22.2 LB)

RATE OF FIRE CYCLICSUSTAINEDRAPID

RANGE 3,725 METERS

MAX EFFECTIVE 900 METERS

EQUIPMENT DATA

15

OPERATORS MANUAL

• CH 2 – Operating instructions

– Sec I PMCS

– Sec II Operation under usual conditions

– Sec III Operation under unusual conditions

16

CH 3 – Maintenance Instructions

Sec I Lubrication instructions

Sec II Troubleshooting 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 I Repair parts, Special tools, TMDE, and Support

equipment– Sec II Service upon receipt– Sec III PMCS– Sec IV Troubleshooting– Sec V Maintenance procedures

Unit/ Direct Support Maintenance Manual

23

• CH 3 – Direct Support Maintenance Instructions

– Sec I Repair parts, Special tools,

TMDE, and Support equipment– Sec II Troubleshooting– Sec III Maintenance Procedures– Sec IV Pre-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 I Introduction– Sec II Maintenance Allocation

Chart– Sec III Tools and Test equipment

requirements– Sec IV Remarks

Unit/ Direct Support Maintenance Manual

25

• App C – Unit and Direct Support Maintenance Repair Parts and Special Tools List– Sec I Introduction– Sec II Repair Parts List– Sec III Special 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

MaintenanceCode

RecoverabilityCode

27

SMR CODEMaintenance Code – (3rd & 4th Position)– 3rd Tells you the lowest maintenance level

authorized to remove, replace, and use the item.– 4th 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

MaintenanceCode

RecoverabilityCode

28

SMR CODE

Recoverability Code – (5th position)– Who determines disposition action on an

unserviceable item

xx xx 5

Source Code

MaintenanceCode

RecoverabilityCode

29

SMR CODE

PA

F

ZZ

(Source Code) - Stocked items; use the applicable NSN torequest/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 Directsupport 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 levelof maintenance shown in the 3rd position of the SMR Code.

30

USABLE ON CODE

G69 M240

L04 M240C

AG8 M240E1

BB2 M240B

BC6 M240G

31

SCRAPER COMBINATION REGULATOR

Used to clean the

gas regulator plug.

32

22

24

23

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.

34

22

24

23

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.

36

10

13

37

TOOL, REMOVING EJECTOR

Used to remove and

install the ejector on the bolt.

38

1

15

1920

17

1816

25

4

9

8

6

7

3

39

21

22

24

23

10

12

11

13

40

1. Cover Assembly2. Pin, Spring3. Tray, Feed4. Receiver Assembly5. Buffer Assembly6. Pin, Spring7. Trigger Housing Assembly8. Rod Assembly, Driving Spring9. Access Cover10. Rod Assembly, Operating11. Pin, Spring12. Pin, Spring

41

13. Pin, Firing14. Bolt, Breech Assy15. Spring Pin16. Extractor Cartridge17. Spring Helical18. Spring Assy19. Ejector Cartridge20. Plunger Extractor21. Flash Hider22. Collar, Gas23. Barrel, Machine Gun24. Plug, Gas Regulator

42

CHECK ON LEARNING

43

ORGANIZATIONAL

MAINTENANCE

OF THE M240 MACHINE GUN