Armored Cavalry Assault Vehicle M113A1 at the Patton Museum of Cavalry and Armor.

This M113A1 has been modified to ACAV standard. Originally conceived by the Army of the Republic of Vietnam, ACAVs had two 7.62mm machine guns on either side of the cargo hatch in addition to the .50cal MG at the commander's station, and these vehicles were used as light tanks instead of armored personnel carriers. Gun shields were provided to protect the gunners from return fire. Four hundred seventy-six standardized armor kits were ordered from FMC Corp., and these were shipped in July 1966 to Vietnam. The machine guns could be replaced by 40mm grenade launchers or recoilless rifles.

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Armored Personnel Carrier M113A2 in Fort Dix, New Jersey.

The boxy shape of the M113 is immediately obvious when viewing this vehicle. This M113A2 lacks the rear-mounted external fuel tanks, but it has been fitted with smoke grenade launchers. The launchers themselves are absent on this model, but the mounting brackets remain, below each headlight cluster. The large trim vane is in the stowed position on the hull upper front; this would swing out when swimming to prevent water from coming over the hull front and swamping the vehicle. The actuating handle for the trim vane is just to the right of the driver's station on the hull front. The driver's cupola is on the left of the hull, and the commander's cupola with the mount for the .50cal M2HB machine gun is centered behind the driver. The four mounting brackets on the left front of the hull are for extra track blocks. The tracks on this vehicle are the single-pin T130E1 type. (Picture courtesy Armor Foto.)

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

This M113A2 has been outfitted to look like a Vietnam-era ACAV vehicle, but its raised idler wheel gives it away. Smoke grenade launchers are not fitted to this vehicle.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

At the left rear corner of the hull is the rear bilge pump outlet. A lifting eye is just to the right of the pump outlet, and below these are the right tail light and the telephone connector.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The driver's position can be seen to the right of this image, and the vehicle commander was placed directly ahead of the camera. The mesh grille just to the driver's right is for engine air intake. An exhaust grille was placed to the right of the air intake grille.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The two bench seats for passengers are placed along the hull sides, and a single jump seat is directly behind the vehicle commander's position. The roof hatch is open on this vehicle. The dark green device in the front right corner of the passenger compartment is the personnel heater, and the radio is stowed on the shelf opposite the heater.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

A closer look at the interior is provided here. The radio and intercom installation is on the left side of the vehicle, and just ahead of this is a fire extinguisher bottle. The driver's adjustable seat post is at the front of the vehicle, and the steering levers, instruments, and accelerator pedal are all visible. The black-knobbed lever placed high to the driver's right is the transmission shift lever, and just below this is the ramp actuating lever.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The vehicle commander's seat here is folded up in front of the post in the middle of the fighting compartment. The seat back for the single jump seat is attached to the opposite side of the post. The height adjustment for the commander's seat is obvious.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

A closer view of the personnel heater is provided here. The large attachments to the left of the image hold the rear power plant access panels.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The right side of the passenger compartment is shown in this image. The rear ramp is painted darker than the rest of the interior, and the right side bench seat is folded up. The tube climbing the rear wall is the rear bilge pump outlet.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The left side of the driver's position is shown here. The green intercom control box is mounted behind the stowage spot for the driver's infrared periscope M19. The master electrical box is below the driver's instrument panel. The rearmost switch on this box is the master switch, and the larger gray auxiliary power receptacle is just to the front of the master switch. The IR power supply is in front of the electrical box.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

From left to right, the warning lights on the driver's warning light panel are for high differential oil temperature, high transmission oil temperature, and high engine oil temperature. To the right on this panel are buttons for the horn and headlights. Three of the nine M17 periscopes that ring the driver's hatch can be seen to the top of the image. The transmission control lever is on the right wall, and below this is the ramp actuation lever. From top to bottom, the three handles to the driver's right front are for fuel cutoff, throttle control, and air vent control. The headlight dimmer switch can be seen between the steering levers, and clips for M16 rifle stowage are mounted in the front left corner.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The control box for the personnel heater is mounted on the vehicle's left side, behind the driver.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The markings on the transmission shift control lever are for, front to back, reverse, neutral, 2-3 gears, 1-3 gears, 1-2 gears, and first gear. The ramp actuation lever to the bottom would be swung forward to lower the ramp.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

The locks for the rear ramp are controlled by a lever over the driver's right shoulder. The right rear of his hatch is visible to the top of the image, and a power plant compartment access door is marked with a yellow warning sticker.

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Armored Personnel Carrier M113A2 belonging to the Patton Museum of Cavalry and Armor.

This Mazda RX-8 is seen through the driver's front M17 periscope.

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Armored Personnel Carrier M113A3.

The external fuel tanks are mounted on this M113A3. The door in the left side of the rear ramp can also be seen. This vehicle was awaiting deployment at Hunter Army Airfield.(Picture taken 28 Feb 2001 by Donald Teft; available from the Defense Visual Information Center.)

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Last updated 1 Jun 2009.

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© Copyright 2001-09 Chris Conners