A Little Bit Of John Deere Styled A History And Information
As you may know the model A was one of the first John Deere tractors styled by the industrial designer Hennery Dreyfuss. This was a very popular tractor back then and is now with collectors. The A could do all the work on a medium sized farm pulling a three-bottom plow. It was the first tractor to come out with mechanical lift. In 1940 the A was given a six-speed transmission with a gate change. The year 1947 gave the A lights and electric starting as standard equipment.
Specs Years (1941-1952)
Nebraska test number...222/335/384
Serial numbers...499000-703384
Serial number location...right top front main case under magneto
Years of production...1934-1952
Number produced...300,000 (approx)
Fuel...gasoline
Fuel tank capacity...main 14 gallons
Bore and stroke...5.50x6.75 inches
Rated rpm...975
Compression ratio...5.60:1
Displacement...321.2 cubic inches
Cooling capacity...8.75 gallons
Carburetor...gasoline-Marvel Schebler DLTX 71, all fuel-Marvel Schebler DLTX 72
Air cleaner...Donaldson/United
Ignition...six volt Delco Remy or 12 volt Delco Remy or Wico X magneto
Engine Ratings...drawbar-34.14hp, pto-38.02hp, maximum pull 4,045 pounds
Front tire...5.50x16 inches
Rear tire...11x38 inches
Lenght...134 inches
Height to radiator...63.87 inches
Width, front...86.37 inches
Speed forward...1-2.50mph, 2-3.25mph, 3-4.25mph, 4-5.50mph, 5-7.33mph, 6-12.33mph, reverse-4.00mph
Weight...4,909 pounds
Operator manual number...OMR2000
Technical manual number...SM2000
Parts catalog number...PC675
Price... $2,513 (1952)
Valve tappet gap-inlet (hot) 0.020
Valve tappet gap-exhaust (hot) 0.020
Inlet valve face angle- 30
Inlet valve seat angle- 30
Exhaust valve face angle- 45
Exhaust valve seat angle- 45
Ignition magneto make- Wico
Ignition magneto model- X
Breaker gap magneto- 0.015
Magneto impluse trip point- TC
Magneto lag angle- 25, 35
Magneto running time-30 B
Electrode gap-0.030
Spark plug make- 8 Champion
Carburetor- DLTX 24
Float setting 1/2
Sizes, Clearances
Crankshaft journal diameter- 2.749
Crankpin diameter- 2.999
Piston pin diameter- 1.7495
Valve stem diameter- 0.4965
Rod brgs., diameter clearance- 2,4
Piston skirt clearance- 5,8
Crankshaft end play- 5,10
(Clearances in thousandths)