The large 90mm gun on this vehicle is imposing and indicates the power of these tank destroyers. As no coaxial machine gun was mounted and the gunner was stationed to the gun's right side, the left side of the gun shield was bereft of apertures. Track grousers and spare track shoes are stowed on the hull sides, and bosses for auxiliary armor can be seen on on the hull front and sides. (Photo by Richard S. Eshleman.)
This vehicle was based on a late-production hull, since the auxiliary armor bosses have been omitted from the rear sides. The driver's periscope in its open hatch door can be seen. The vehicle's siren is placed just outboard of the left-hand headlight group.
The semi-circular gun shield helps differentiate this vehicle from the M10, as the M10's gun shield was more pyramidal.
A frontal view of the gun shield is provided here; note that the turret on this vehicle is pointed to the rear. This carriage has been fitted with the folding armored roof, the outboard doors of which are open.
The aperture for the gunner's M76D telescope was stepped.
A side view of the armored roof kit is provided here. Three doors could be folded forward to provide unfettered access, and the kit itself allowed a small distance from the turret top to retain all-round vision. Bosses for applique armor are present on the hull, but the 90mm gun turret was no similarly outfitted.
Further details of the roof kit are provided here. The middle door remains latched, while the two outer doors are folded forward. The front vision doors are opened upward as well.
The large turret bustle helped to counterbalance the heavy 90mm gun as well as provide an ammunition stowage space. Placement of the .50cal machine gun mount can also be seen.
The exhaust deflector associated with the Ford GAA engine is present on this vehicle, and the 90mm gun travel lock is raised.
The wide air intake grilles were a hallmark of the GAA engine. The filler cap in the foreground was for the left rear fuel tank, and the one between the turret and the air intake grilles was for the cooling system.
Although threaded for a muzzle brake, one is not mounted on this vehicle. A thread protector is installed instead.
The interior of the turret is shown here. A folding frame for a canvas foul weather cover is stowed above the gun shield, and a fire extinguisher is mounted on the turret front wall. The loader sat to the left of the gun, while the other two turret crew were positioned to its right. (Picture from TM 9-374 90-mm Gun M3 Mounted in Combat Vehicles.)
A closer view of the gunner's position is shown in this image. (Picture from TM 9-374 90-mm Gun M3 Mounted in Combat Vehicles.)
The hull of this vehicle is that of the late-production M4A3 with stowage rearranged to accommodate 90mm ammunition. Note the retention of the bow machine gun and the absence of a muzzle brake. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
The length of the 90mm gun necessitated a travel lock on the rear of the hull. Track blocks are stowed above the rear fenders, and a folding blanket rack for the crew is attached to the rear hull plate. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
The open-topped turret is showcased from this angle. The length of the turret bustle is better illustrated, and the .50cal machine gun is stowed on the rear of the bustle. A spare .50cal barrel is on top of the turret bustle. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
Another view of the turret controls is provided here. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
The hull hull floor was made up of the lids of 90mm ammunition boxes. Besides the 11 90mm rounds stowed in the turret bustle, a further 36 were stowed in the hull. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
To release the travel lock, the spring release was pulled down and the gun was then elevated. Once free, the travel lock was latched to the rear deck. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
The gun cradle was also provided with a lock, shown here in the open position. To release the cradle lock, the hand lever was pulled up, releasing the cradle lock body. The gun was then elevated to remove the lock from the cradle hook. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
A Sherril AEG-1 compass was mounted above the driver's instrument panel. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
The .50cal machine gun was stowed on the turret rear as shown. (Picture from TM 9-748 90-mm Gun Motor Carriage M36B1.)
From this angle, it would be very difficult to differentiate this M36B2 from an M36. This vehicle is fitted with the folding turret roof armor which provided overhead protection while still allowing all-around vision. This vehicle has a muzzle brake, and the .50cal MG is stowed on the turret rear. In addition, it has been modified with the spaced-out suspension that allowed extended end connectors to also be mounted on the inner track run. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The turret is still reversed, and the image on the right allows us to positively identify the diesel engine deck with its characteristic smaller air inlet grilles and filler cap configuration. The legend is as follows: A. Spare machine gun barrels. B. Machine gun pedestal. C. Lifting eyes. D. Driver's door. E. Towing cable. F. Fenders. G. Assistant driver's door. H. Antenna. J. Machine gun. K. Turret doors' latch. L. Turret top. M. Lifting eyes. N. Pick mattock. P. Pick mattock handle. Q. Crow bar. R. Track adjusting wrench. S. Shovel. T. Ax. U. Exterior fire extinguisher pull handles. V. Sledge. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The underside of the hull is illustrated here. A. Transmission drain plug. B. Differential drain plugs. C. Hull drain valves. D. Crankcase drain cover plates. E. Lubricating oil tank drain cover plates. F. Water drain plugs. G. Engine compartment floor plates. H. Lower fuel tank drain cover plates. J. Escape hatch. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The assistant driver's station is highlighted in this image. A. Hull radio teminal box. B. Assistant driver's periscope. C. Cal. .30 rifle stowage strap. D. Radio set. E. Periscope spare heads stowage box. F. Assistant driver's seat. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The cradle traveling lock is shown here in the locked position. The cradle lock could be operated from inside the turret and was therefore appropriate for use when the gun might be needed quickly. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The clutch lockout controls were peculiar to vehicles powered by the twin GM diesels. The lockouts held either or both engine clutches in the disengaged position so one or both engines could be started or used independently or disconnected from the propellor shaft without the driver keeping the clutch pedal pressed. The throttle lever was used to provide sufficient fuel to start and idle the engines, to control the engine speed when the vehicle was stationary, and when moved to the "NO-FUEL" position to stop fuel flow and therefore stop the engines. The throttle lock lever locked the throttle lever in whatever position it occupied. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The armored turret top consisted of a front section with hinged turret top doors and vision doors, and a rear shield. The vision doors were equipped with an angular adjustment to balance the need for vision and protection. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)
The rear shield mounted the latches for the turret top doors on the front section. (Picture from TM 9-745 90-mm Gun Motor Carriage M36B2.)