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 757 of 828
TM 9--2350--311--20--2
Change 4
B--9
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
0503
BOX ASSEMBLY
INSPECT
0.5
4
(GUNNERS)
TEST
0.3
4, 11
REPLACE
0.4
4, 11
REPAIR
0.7
4, 11
0504
BOX ASSEMBLY,
REPLACE
0.4
4
POWER RELAY
REPAIR
1.0
4
06
CAB ELECTRICAL ARM
ASSEMBLY
0601
SEGMENT RING,
INSPECT
0.5
CONTACT
TEST
0.2
4
REPLACE
0.5
4
REPAIR
2.0
3, 4, 6
0602
ARM, ELECTRICAL
TEST
0.4
4, 9
REPLACE
0.5
4, 9
REPAIR
2.0
4, 9
ADJUST
1.0
4
07
WEATHER COVER
SERVICE
0.1
4
REPLACE
1.5
4
REPAIR
2.0
4
08
TURRET LOCK
SERVICE
0.1
4
ASSEMBLY
REPLACE
1.0
4
REPAIR
1.7
09
TRAVERSING
ADJUST
1.0
4, 16
MECHANISM ASSEMBLY
SERVICE
0.5
1.0
4
REPAIR
6.0
3, 4, 17
REPLACE
2.0
3, 4, 18
OVERHAUL
**
0901
PUMP ASSEMBLY
REPLACE
1.0
4
REPAIR
1.5
3, 4
0902
HYDRAULIC MOTOR
REPLACE
2.0
4
ASSEMBLY
REPAIR
4.0
3, 4
09020101
RELIEF VALVE
REPLACE
1.0
3, 4
ASSEMBLY
REPAIR
1.5
3, 4
0903
BRUSH ASSEMBLY*
REPLACE
0.2
4
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