Landing Vehicle, Tracked, Personnel, Mark 5.

The design of the LVTP5, with its inverted-vee shaped hull and low-slung, internal track channel, was a sharp break from earlier amphibian tractors. The large bow ramp is obvious in the front of the vehicle, and the machine gun could be mounted in a cupola as shown here. The mesh grille near the rear of the vehicle was for the port radiator; an escape hatch is to the front of this screen, and boarding steps are just in front of the escape hatch. In front of and just above the upper step is a recess for the fire extinguisher activation handle. The new track design lacking conspicuous external paddles is also apparent. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5.

The freeboard of a waterborne LVTP5 is illustrated here. Note the machine gun cupola is not mounted. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5.

A torsilastic spring assembly is shown in this image. The tubular rubber spring is bonded between an inner tube that connects securely to the hull and a split outer tube onto which is pressed the road wheel arm. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5.

This is a completed suspension arm assembly, and the open inner metal tube can be seen to the left of the image. End caps were placed over the exposed ends of the split outer tube before installation onto the vehicle. The road wheel would be mounted in the smaller hole to the right. Lubrication was unnecessary for (and indeed oil could be harmful to) the rubber spring. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5.

Details of a track shoe can be gleaned here. Modifications during production included changes to the track pins. Initially, the hollow pins had been filled with lubricant during production and the two small holes in the pins distributed the lubricant to the pin bore. A self-lubricating bushing was subsequently introduced to prevent scoring of the pins and bores, and consequently the hollow pins were eliminated and the cavity around the seals was also packed with lubricant. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5.

The profile of the grouser, which provides propulsion in the water and also acts as the track center guide, is shown in this image. (Picture from Research, Investigation and Experimentation in the Field of Amphibian Vehicles.)

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Landing Vehicle, Tracked, Personnel, Mark 5A1.

This view of a waterborne LVTP5A1 showcases its roof features. The large engine air intake and exhaust superstructure is visible on the vehicle's rear next to the kneeling Marine, and can be contrasted with the vehicles above. The driver is in his cupola on the vehicle's front left corner, and the commander's cupola is on the opposite side. The machine gun cupola or turret is placed between them. There are two open entrance hatches near the hull's center, and a second set remain closed closer to the rear corners of the hull. The aperture in the vehicle's side closest to the front is the fire extinguisher pull handle. A larger boarding step is behind this, and towards the rear the port radiator compartment is covered by a large mesh screen. Cylindrical mooring bitts are placed on the extreme corners of the roof. (Picture taken 19 Apr 1968; available from the National Archives.)

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Last updated 16 Feb 2014.
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© Copyright 2013-4 Chris Conners