End Of Work Package

UNIT

M242 25-MM AUTOMATIC GUN (NSN 1005-01-086-1400) M242 25-MM ENHANCED AUTOMATIC GUN (NSN 1005-01-454-0396)

MAINTENANCE ALLOCATION CHART (MAC)

Table 1. MAC for M242 Automatic Gun.

(1)

(2)

(3)

(4)

(5)

(6)

MAINTENANCE

TOOLS

LEVEL

AND

GROUP

MAINTENANCE

UNIT

DS

GS

DPT

EQUIPMENT

REMARKS

NUMBER

COMPONENT/ASSEMBLY

FUNCTION

C

O

F

H

D

REF CODE

CODE

00

M242 25-MM Automatic Gun

Inspect

0.3

1.7

1.0

with BII 12524000

Test

0.4

0.4

3.0

25,41,44

(Standard) or 12524600

Service

0.9

(Enhanced)

Remove/

Install

0.3

Replace

0.6

001

M242 25-MM Automatic Gun

Inspect

0.3

1.7

1.0

12524008 (Standard) or

Test

0.4

0.4

3.0

25,41,44

12524008-1 (Enhanced)

Service

0.9

Remove/

Install

0.3

Replace

0.6

0011

Barrel Assembly

Inspect

0.2

15,34,48,49

12524520

Service

0.1

Remove/

Install

0.2

24

Replace

0.5

18,19,34,41,48,

49

Repair

1.3

18,19,34,41,48,

49

0012

Automatic Gun Feeder

Inspect

1.0

12524100 (Standard) or

Test

0.3

0.3

25

12524100-1 (Enhanced)

Service

0.2

Remove/

Install

0.1

Replace

0.1

19,41

Repair

0.7

3.0

19,34,41,44

00121

Feeder Drive Assembly

Repair

2.5

18,19,35,43,50

12524180

Table 1. MAC for M242 Automatic Gun - Continued.

(1)

(2)

(3)

MAINTENANCE LEVEL

(5) TOOLS AND

(6)

GROUP

MAINTENANCE

UNIT

DS

GS

DPT

EQUIPMENT

REMARKS

NUMBER

COMPONENT/ASSEMBLY

FUNCTION

C

O

F

H

D

REF CODE

CODE

0012101

Electrical Solenoid

Assembly

12524404

Replace Repair

0.5 0.3

2,19,20,32,37, 41,44,51 2,19,20,32,37, 41,44,51

00121011

Wiring Harness 12524403

Replace Repair

0.3 0.1

41,44,51

41,44

001210111

Connector 12524644

Repair

0.1

37,41,44

0012102

Rear Plate Assembly 12524575

Replace Repair

0.3

18,19,35,43,50, 52

00121021

Feed Plate Assembly 12524191

Repair

0.2

18,19,35,43,50, 52

0012103

Worm Shaft Assembly 12524250

Replace Repair

0.6 0.3

18,19,35,43,50, 52

0012104

Feed Shaft Stop Assembly 12524170

Replace Repair

0.1 0.2

18,19,41,44

0012105

Sliding Sleeve Lower Clutch 12524083

Replace Repair

0.4 0.2

18,19,35,43

0012106

Sliding Sleeve Upper Clutch 12524290

Replace Repair

0.4 0.2

18,19,35,43

0012107

Gear Clutch Assembly 12524099

Replace Repair

0.6 0.3

8,18,19,22,35,43

0012108

Housing Assembly 12524210

Replace Repair

2.5 0.8

30,35,43

Assembly

12524260

Replace Repair

0.5

2,16,20,43,51

00122

Forward Feed Assembly 12524574

Replace Repair

0.4

41,44 41,44

Table 1. MAC for M242 Automatic Gun - Continued.

(1)

(2)

(3)

MAINTENANCE LEVEL

(5) TOOLS AND

(6)

GROUP

MAINTENANCE

UNIT

DS

GS

DPT

EQUIPMENT

REMARKS

NUMBER

COMPONENT/ASSEMBLY

FUNCTION

C

O

F

H

D

REF CODE

CODE

00123

Round Positioner Assembly 12524524

Replace Repair

0.2 0.2

38,41,44 41,44

0013

Auto Gun Receiver 12524300 (Standard) or 12524301 (Enhanced)

Inspect Service Remove/ Install

Repair Test

0.4 0.3

0.3

25

00131

Mechanical Housing 12524362

Replace Repair

0.2

0.3

41,44

30

00132

Bolt and Track Assembly 12524340

Inspect Service Replace Repair

0.3

0.3

18,19,41,44

0013201

Bolt and Carrier Assembly 12524320

Inspect Service Replace Repair

0.3

0.2 0.1

18,19,41,44

00132011

Bolt, Breech 12524331

Remove Repair

0.1

0.3

18,19,41,44

0013202

Track Assembly 12524380

Service Replace Repair

0.3

18,19,29,41,44

00133

Recoil Mechanism 12524420 (Standard) 12524530 (Enhanced)

Inspect Service

Replace

Repair

0.8

0.8

23.35.43.47

0013301

Damper Housing Assembly 12524425 (Standard) 12524533 (Enhanced)

Inspect Repair

0.2 0.7

4,10,11,18,19, 35,43

0013302

Fluid Pressure Damper 12524438

Repair

0.5

4,10,11,18,19, 35,43

00134

Rocker Assembly 12524463

Replace Repair

0.2 0.1

18,19,41,44 18,19,41,44

Table 1. MAC for M242 Automatic Gun - Continued.

(1)

(2)

(3)

MAINTENANCE LEVEL

(5) TOOLS AND

(6)

GROUP

MAINTENANCE

UNIT

DS

GS

DPT

EQUIPMENT

REMARKS

NUMBER

COMPONENT/ASSEMBLY

FUNCTION

C

O

F

H

D

REF CODE

CODE

00135

Clutch Assembly 12524146 (Standard) 12524542 (Enhanced)

Test Replace

0.3

41,44

18,19,41,44

00136

Sear Assembly 12524089

Inspect Replace Repair

0.1 0.1 0.2

18,19,34,41

00137

Breech Assembly 12524370 (Standard) or 12524527 (Enhanced)

Inspect Replace Repair

0.1 0.2 0.1

41,44 41,44

00138

Riveted Receiver 12524360 (Standard) 12524364 (Enhanced)

Inspect Repair

0.2

0.5

30,35,43

00139

Direct Current Motor 12524409 (1.0) (Standard) 12524494 (1.0) (Enhanced)

Test Replace

Repair

0.9

1.0 1.5

19,27,41,44

Table 2. Tools and Test Equipment Requirements for M242 Automatic Gun.

TOOL OR TEST EQUIPMENT REF CODE

MAINTENANCE LEVEL

STOCK NUMBER

CAGEG AND TOOL NUMBER

1

O,F

APRON, UTILITY

8415-00-082-6108

58536 A-A-55063

2

O,F

BIT, SCREWDRIVER, CROSS TIP (0 TIP, 1/4 SHANK)

5120-01-396-3631

67179 D1220AA

3

O

BIT, SCREWDRIVER, FLAT TIP (1/2 DRIVE)

5120-00-277-3601

1AR81 512000-277-3601

4

F

BUFFER REMOVAL TOOL

4933-01-426-3871

8V613 465-0725

5

O

CAPS, VISE JAW

5120-00-221-1506

58536 A-A-2938

6

O

CARTRIDGE, DUMMY

1305-01-105-4095

19200 12556184

7

F

CLAMP ASSEMBLY, RECOIL SPRING

1005-01-119-7254

19200 12524021

8

F

CROWFOOT ATTACHMENT, SOCKET WRENCH (22MM)

5120-01-074-7558

55719 FCOM22

Table 2. Tools and Test Equipment Requirements for M242 Automatic Gun.

TOOL OR TEST EQUIPMENT REF CODE

MAINTENANCE LEVEL

STOCK NUMBER

CAGEG AND TOOL NUMBER

9

O

CROWFOOT ATTACHMENT, SOCKET WRENCH (32MM)

5120-01-278-6889

19200 12524176

10

F

DAMPER ROD TOOL

19204 CSAL-1

11

F

DAMPER ROD TOOL

19204 CSAL-2

12

O

DIE SET, STAMPING

5110-00-293-1904

87369 511000-293-1904

13

O

DRILL, ELECTRIC

5130-00-293-1849

80244 513000-293-1849

14

O

DRILL, TWIST (1/8 IN.)

5133-00-227-9650

OR503 B94.11M

15

O

GAGE, CANNON BORE EROSION

5120-02-329-4860

19200 12535035

16

O,F

GAGE, THICKNESS

5210-00-221-1999

09058 599-647

17

O

GLASS, MAGNIFYING

6650-00-133-7743

19200 11728227

18

O,F

GLOVES, CHEMICAL PROTECTIVE

8415-00-266-8675

81348 ZZ-G-381

19

O,F

GOGGLES, INDUSTRIAL

4240-00-052-3776

58536 A-A-1110

20

O,F

HOLDER, SCREWDRIVER BIT, FEMALE SQ (1/4 DRIVE, 1/4 HEX)

5120-01-380-8979

55719 TMBS8

21

F

HOLDER, SLIPPAGE TORQUE TEST, RECEIVER CLUTCH

5120-01-452-3355

8V613 465-0724

22

F

INSERTER, GEAR (CLUTCH)

5120-01-153-2794

19200 12524031

23

F

INSERTER AND REMOVER, SPRING (RECOIL)

5120-01-130-5696

19200 12524027

24

O

MITTENS, HEAT

11199F

25

O

MULTIMETER

6625-01-265-6000

89536 27/FM W/ACCE

Table 2. Tools and Test Equipment Requirements for M242 Automatic Gun.

TOOL OR TEST EQUIPMENT REF CODE

MAINTENANCE LEVEL

STOCK NUMBER

CAGEG AND TOOL NUMBER

26

O

PULLER, MECHANICAL (INSIDE)

5120-00-449-3769

81348 GGG-P-781

27

O

PULLER, MECHANICAL (OUTSIDE)

5120-00-595-9304

81348 GGG-P-781

28

O

PUNCH, DRIVE PIN (0.156 X 4 IN.)

5120-00-240-6104

81348 GGG-P-831 SIZE 4

29

O

PUNCH, DRIVE PIN (0.188 X 4 IN.)

5120-00-293-0791

81348 GGG-P-831 SIZE 5

30

F

REPAIR KIT, INSERT

5180-01-153-2795

19200 12524035

31

O,F

RESPIRATOR, AIR FILTERING

GGG-M-125/6

32

O

SCREWDRIVER, CROSS TIP (SIZE 0)

5120-01-398-9250

OTA44 9-41293

33

O,F

SEALING MACHINE, HEAT

MILS004461

34

O

SHOP EQUIPMENT, COMMON #2

4910-00-754-0650

SC 4910-95-A72

35

F

SHOP SET, SMALL ARMS

4933-00-754-0664

SC 4933-95-A11

36

O,F

SOCKET, SOCKET WRENCH (1/4 DRIVE, 1/8 IN.)

5120-01-335-0961

55719 TM04

37

O

SOCKET WRENCH ATTACHMENT, 4MM

5120-01-348-9249

55719 TMM4

38

O,F

SOCKET WRENCH ATTACHMENT, 6MM

5120-01-368-1995

08292 41 4806

39

O,F

STENCIL SET, MARKING

7520-00-298-7043

83421 752000-298-7043

40

O,F

STRAPPING AND SEALING KIT

3540-00-565-6241

80244 354000-565-6241

41

O

TOOL KIT, ARTILLERY AND TURRET MECHANIC'S

5180-00-357-7727

SC 5180-95-A12

42

O

TOOL KIT, GENERAL MECHANIC'S (MARINE CORPS)

5180-00-606-3566

SL-3-00456A

Table 2. Tools and Test Equipment Requirements for M242 Automatic Gun.

TOOL OR TEST EQUIPMENT REF CODE

MAINTENANCE LEVEL

STOCK NUMBER

CAGEG AND TOOL NUMBER

43

F

TOOL KIT, REPAIRMAN'S, SMALL ARMS

5180-00-357-7770

SC 5180-95-A07

44

MECHANIC'S

(SUPPLEMENTAL)

5180-01-115-5351

SC 5180-95-B19

45

O

VISE, MACHINIST'S

5120-00-293-1439

81348 GGG-V-410

46

O

WRENCH, BOX AND OPEN END, COMBINATION (32MM)

5120-01-113-6295

80204 B107.9

47

F

WRENCH, SPANNER (RECOIL)

5120-01-119-7240

19200 12524483

48

O

WRENCH, SPANNER (MUZZLE BRAKE)

5120-01-452-5904

19200 12524402

49

O

WRENCH, STRAP

GGG-W-651

50

F

WRENCH, TORQUE (0-300 IN.-LBS)

5120-00-776-1841

80204 B107.14M

51

O,F

WRENCH, TORQUE (0-80 IN.-OZ)

5120-01-394-4262

64334 850254

52

O

WRENCH, TORQUE (0-175 FT-LBS)

5120-00-640-6364

80204 B107.14M

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