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Landing Vehicle, Tracked, Mark 4

Vehicle Specifications

General Information
Date of First Acceptance - 1944	Total Acceptances - 8348

Crew - 3 Man + 30 passengers

	30 Combat Equipped Marines

Armor:
Maximum	None	Minumum	None

Armament:
Type	Mount	Ammunition	Traverse	Elevation
Two .50cal M2HB Machine Guns	Pivot mounts at front of cargo area
Two .30cal M1919A4 Machine Guns	One on each side of cargo area

Dimensions:
Combat Weight (land)	36,400lbs	Height	98"
Length	313"	Gun Overhang Forward	0"
Width	128"	Tread
Ground Clearance, Sides		Ground Pressure, Zero Penetration	psi

Performace:
Max Level Road Speed	20 mph	Max Water Speed	x7.5 mph
Max. Trench	60"	Min. Land Turning Diameter	30'
Max. Vertical Obstacle	36"	Max. Grade	60%
Angle of Approach	35°	Angle of Departure	30°
Cruising Range Roads	miles	Cruising Range Water	miles

Automotive:
Engine:		Continental W-670-9A; 7 cylinder, 4 cycle, radial gasoline
Transmission:		Synchromesh, 5 speeds forward, 1 reverse
Steering:		Controlled differential, steering levers
Brakes:		Mechanical, external contracting

Suspension:
Type:	Road Wheels:	Track Return Rollers:
Torsilastic	11 independently sprung/track	2/track
Drive Sprockets:	Idlers:	Shock Absorbers:
37-alternate-engaged-tooth front drive	33-tooth adjustable sprocket at rear of track	None

Track:
Outside guide, dry pin, steel link, extruded grousers
Width:	14.25"	Pitch	8"	Shoes/Track:	73
Ground Contact Length:			126.5"

LVT4 was a remodeled LVT2, where the engine was moved from the rear of the vehicle to behind the driver's cab, yielding a larger cargo area and allowing a rear loading ramp to be installed. Applique armor could be attached to the LVT4: .5" (1.3cm) armor on the front and .25" (.64cm) on the sides, but this reduced the LVT4's payload by 3000lbs (1360kg). The LVT4's cab had two large glass windows and two roof hatches, and three armored cabs could be installed as well, with .5" (1.3cm) armor to the front and .25" (.64cm) armor on the top and sides. The front panel of the early cab was solid, with the driver's hatch on the front plate opening outward for observation (much like LVT(A)2's). A periscope was installed in each roof hatch, and these were originally covered by a plastic hemisphere, but these plastic covers were eliminated later. Later armored cabs were fitted with a ball-mounted .30cal machine gun at the assistant driver's position, and the final armored cabs had the ball-mounted MG as well as vision blocks for the driver and assistant driver in place of the driver's earlier vision panel. This final version also lacked the driver's periscope.

References:
AFV Database: http://afvdb.50megs.com/


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