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egorogr

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  1. Hello. What was the part number of the M34 mount 75mm gun cradle? Is there any good reference of foundry symbol and part number on cradle?
  2. What type of hydraulic turret traversing mechanism was installed on M4A2 in the beginning of 1943? There were several variants, and it seems hard to understand for me which was the most typical for that period. Are there any detailed photos or schemes?
  3. Thank you! As for air heater I got some thing like this: Early: AIR HEATER INSTRUCTIONS 1 TURN ON AIR HEATER SWITCH 2 WITH ENGINE THROTTLE WIDE OPEN ENGAGE STARTER 3 OPERATE PUMP WITH SMOOTH EVEN STROKES APPLYING A FIRM PRESSURE OF 10 POUNDS OR MORE OF PUMPING STROKE 4 WITH ENGINE RUNNING REGULATE THROTTLE AND TURN PLUNGER ALL THE WAY UNTIL LOCK ENGAGES 5 TURN OFF AIR HEATER SWITCH WARNING FOR COLD WEATHER STARTING ONLY Late: AIR HEATER INSTRUCTIONS 1 TURN ON AIR HEATER SWITCH 2 WITH ENGINE THROTTLE WIDE OPEN ENGAGE STARTER 3 RELEASE PUMP PLUNGER 1/2 TURN IN COUNTER CLOCKWISE DIRECTION AND OPERATE PUMP WITH SMOOTH EVEN STROKES APPLYING A FIRM EVEN PRESSURE OF 10 POUNDS OR MORE OF PUMPING STROKE 4 WITH ENGINE RUNNING REGULATE THROTTLE PUSH PLUNGER IN ALL THE WAY AND TURN CLOCKWISE UNTIL LOCK ENGAGES 5 TURN OFF AIR HEATER SWITCH WARNING FOR COLD WEATHER STARTING ONLY Another question is about early splithatch cupola. "Son of Sherman" book says the earliest cupola part number was D51050, if I got it right. But it seems to me the number on this photo is D51045. So was the D51050 cupola not the first but the second type actually? Does anyone know what were part numbers for the hatches of this type of copola or any oher split hatch type? Are there any good examples? Are there any good references for D51050 cupola, so that the number is visible clearly?
  4. Does anyone know exact text for blackout and air heater instruction plates on early M4A2 instruments panel (or on any other if these instructions were the same)?
  5. Thanks Is there any description of how it works? It seems A - handle controled brake, which changes, how easily cupola could be rotaded. And E - knob (D on the second picture) locked cupola in certain positions.
  6. Hello Is there any detailed photos or schemes of early split hatch cupola's race lock assembly? It seems to be similar to later type in general, but looks different in details.
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