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 752 of 828
TM 9--2350--311--20--2
B--4
Change 4
SECTION II. MAINTENANCE ALLOCATION CHART -- Cab Armament, Sighting and Fire
Control, Elevating And Traversing Systems And Associated Components.
(1)
(2)
(3)
(4)
(5)
(6)
MAINTENANCE LEVEL
FIELD
SUSTAINMENT
GROUP
NUMBER
COMPONENT/
ASSEMBLY
MAINTENANCE
FUNCTION
UNIT
DS
GS
DEPOT
TOOLS AND
EQUIPMENT
REF CODE
REMARKS
CODE
C
O
F
H
D
00
CAB ASSEMBLY
REMOVE
4.0
1--5
INSTALL
4.0
1--5
01
BEARING ASSEMBLY
INSPECT
0.5
SERVICE
0.5
REPLACE
6.0
**
1--5
REPAIR
8.0
**
1--5
OVERHAUL
0101
RACE RING ASSEMBLY
INSPECT
0.5
4
SERVICE
0.5
4
REPAIR
0.5
**
4
02
MOUNT AND HOWITZER
ASSEMBLY
0201
CANNON ASSEMBLY,
INSPECT
0.2
HOWITZER M185/M284
SERVICE
2.0
REPLACE
6.0
3--7
REPAIR
8.0
3--7
OVERHAUL
**
020101
COLLAR, THRUST
REPAIR
1.0
4, 8
REPLACE
1.0
4
020102
TUBE ASSEMBLY
REPLACE
1.0
4--7
02010201
EVACUATOR ASSEMBLY
REPAIR
0.5
4, 8
REPLACE
0.5
4
020103
FIRING MECHANISM
REM/INS
0.1
4
ASSEMBLY
INSPECT
0.2
4
REPLACE
0.1
4
REPAIR
0.5
4
020104
BREECH
INSPECT
0.2
4
MECHANISM
REPAIR
1.0
6.0
3, 4
02010401
BLOCK ASSEMBLY
REM/INS
0.5
4
(FIRING)
REPLACE
0.5
4
REPAIR
0.5
4
0201040101
FOLLOWER ASSEMBLY
REM/INS
0.2
REPLACE
0.2
4
REPAIR
0.5
4
02010402
SPINDLEASSEMBLY
REM/INS
0.5
REPLACE
1.0
4
REPAIR
1.0
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