TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 763 of 828
TM 9--2350--311--20--2
Change 4
B--15
SECTION II. MAINTENANCE ALLOCATION CHART -- Cab Armament, Sighting and Fire
Control, Elevating And Traversing Systems And Associated Components. -- Continued
(1)
(6)
(5)
(4)
(3)
(2)
MAINTENANCE LEVEL
SUSTAINMENT
FIELD
GROUP
NUMBER
REMARKS
CODE
TOOLS AND
EQUIPMENT
REF CODE
DEPOT
GS
DS
UNIT
MAINTENANCE
FUNCTION
COMPONENT/
ASSEMBLY
D
H
F
O
C
1808
MOUNT, TELESCOPE
INSPECT
0.2
0.2
0.2
0.2
**
4, 20, 21
M145/M145A1
SERVICE
0.5
**
4, 10
ADJUST
2.5
**
4, 20, 21,
35-37
REPLACE
1.0
**
4, 20, 21, 35
REPAIR
3.0
23.5
**
4, 20, 21, 35
OVERHAUL
**
4, 20, 21, 29,
35
180801
HOUSING ASSEMBLY
INSPECT
0.2
**
REPAIR
2.0
**
20, 21
180802
DISK ASSEMBLY
INSPECT
0.1
0.1
**
4
REPAIR
0.5
2.0
**
4, 20, 21
180803
LEVEL ASSEMBLY
INSPECT
0.2
0.2
4
ADJUST
0.5
20
REPLACE
1.5
20
REPAIR
0.5
3.0
4, 20, 21
180804
QUADRANT SUPPORT
ASSEMBLY
INSPECT
REPLACE
0.1
0.5
0.2
1.0
**
**
20, 21
REPAIR
4.0
**
4, 20, 21,
ADJUST
0.5
20, 21, 35
180805
COUNTER BOX
INSPECT
0.1
0.2
0.1
**
4
ASSEMBLY
REPLACE
1.0
20, 21
REPAIR
1.0
5.0
**
4, 20, 21
180806
SEGMENT
INSPECT
0.1
ASSEMBLY
REPLACE
1.0
20, 21
REPAIR
2.0
20, 21
1809
TELESCOPE,
INSPECT
0.2
0.2
0.2
1.5
4, 20, 21
PANORAMIC
SERVICE
0.5
4, 10
M117/M117A2
ADJUST
1.0
20, 21, 35,
38, 39
REPLACE
0.5
4
REPAIR
1.0
18.0
4, 20, 21, 40
OVERHAUL
**
20, 21, 29,
32, 35, 38--41
180901
CAP ASSEMBLY
INSPECT
0.2
REPLACE
1.0
20
REPAIR
1.0
20
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