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 172 of 828

TM 9–2350–311–20–2
3–61
PICTORIAL VIEW
ELECTRICAL SCHEMATIC
1
CAB POWER PACK HYDRAULIC PUMP DRIVE MOTOR CIRCUIT (M109A2/M109A3 HOWITZERS)
9
5
8
10
6
2
3
7
1
4
1
5
3
2
1
8
7
10
4
11
A
645
LEGEND:
1. Contact arm assembly
2. Power relay box assembly
3. Pressure switch
4. Power pack assembly
5. Gunner’s selector switch box assembly
6. Segment board
7. Power valve solenoid
8. Traverse clutch
9. Traverse bypass valve assembly
10. Elevation selector valve assembly
11. Hydraulic pump motor


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