Rearmament from the 75 mm M3 to the 76 mm M1A1/A2 was relatively easy due to the T110 receiver design coming from the M62, as the firing pins were identical. It was only in March 1945 that official rearmament to the 76 mm M1A1/A2 gun began. These were initially predominantly field conversions. Gradually, the M4A3E2 also began to appear, also armed with the 76 mm M1A1 cannon. Most M4A3E2 machines were armed with the M3 75 mm gun, whose HE ammunition contained more explosive charge than the 76 mm HE ammunition and was therefore better suited as the primary armament of an assault tank. This modified gun carried the designation T110. Used the original ( from the T-23 turret) 3.5 inch M62 76 mm gun turret, supplemented by a 3.5 inch thick frontal armour block. It was quite similar to the turret of the T-23 development tank, which was used in later versions of the M4 armed with the 76 mm M1A1 - M1A2/C gun. The turret was almost competently redesigned compared to the M4A3. The transport barrel lock was slightly preĺve. The lights and siren were removed from the front of the hull. The differential cover was replaced with a casting with 5.5 inch wall thickness which was 1.25 inches more than the original. The result was the increase in frontal armor from 2.5 inches to 4 inches and side armor from 1.5 inches to 3 inches. The modification consisted, among other things, of adding 1.5 inches of armor to the front and to the tops of the hull sides. Between May 1944 and July 1944, 254 machines were so modified at Fisher Tank Arsenal. This tank was classified as the M4A3E2 and given the nickname 'Jumbo'. After the development of the T-14 assault tank reached an impasse, it was decided to use a modified standard model of the M4A3 tank armed with the 75 mm M3 gun for the task. In the run-up to the invasion of Europe, the Allied experience of fighting in North Africa had shown the weakness of the inadequate armour of the American Sherman M4 medium tanks. Sherman, A history of the American Medium tank, R.P. Turret traverse : hydraulic and manual, 360° turn in 15 seconds Otáčení věže : hydraulické a manuální, otočení o 360° za 15 vteřin Palivo : 80oktanový benzín, 168 US galonů 30 machine gun M1919A4 (both total of 6250 rounds) 50 anti-aircraft machine gun M2HB (600 rounds) 50 protiletadlový kulomet M2HB (600 nábojů) USSR / Successional Countries USSR (SOV)ĭD.06.1944-DD.07.1944 Fisher Tank Arsenal, Grand Blanc.Czechoslovakia / Czech Republic / Slovak Republic (CZK/CZE/SVK).Armoured Personnel Carriers and Infantry Fighting Vehicles.

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M4 jumbo assault tank turret traverse