J.I. Case LA tractor specifications

1940 - 1953

1940 - 1953 Standard-tread tractor

Production

Production Manufacturer:J.I. Case
Type:Standard-tread tractor
Factory:Racine, Wisconsin, USA
Total built:35,493
The stout Case LA was often a candidate for re-powering with a Detroit Diesel 3-71 engine.

Variants

Variants LA:farm
LAI:industrial

1940 - 1953

Standard-tread tractor

Production

Production
Manufacturer:	J.I. Case
Type:	Standard-tread tractor
Factory:	Racine, Wisconsin, USA
Total built:	35,493
The stout Case LA was often a candidate for re-powering with a Detroit Diesel 3-71 engine.

Variants

Variants
LA:	farm
LAI:	industrial

J.I. Case LA Power

J.I. Case LA Power
Drawbar (claimed):	51 hp 38.0 kW
Belt (claimed):	58 hp 43.3 kW
Drawbar (tested):	51.73 hp 38.6 kW
Belt (tested):	59.60 hp 44.4 kW
power test details ...

J.I. Case LA Engines

J.I. Case LA Engines
J.I. Case 6.6L 4-cyl gasoline
J.I. Case 6.6L 4-cyl tractor fuel
J.I. Case 6.6L 4-cyl LP gas
Fuel tank:	31 gal 117.3 L (gas)
	29 gal 109.8 L (tractor fuel)
Aux. fuel:	2 gal 7.6 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
Brakes:	differential mechanical disc
Cab:	Open operator station.
Transmission:	4-speed unsynchronized gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	550

Dimensions & Tires

Dimensions & Tires
Weight:	7515 lbs 3408 kg
Front tire:	7.50-18
Rear tire:	15-30
Full dimensions and tires ...

LA Serial Numbers

LA Serial Numbers
1940:	4400001
1941:	4500001
1942:	4600001
1943:	4700001
1944:	4800001
1945:	4900001
1946:	5000001
1947:	5100001
1948:	5200001
1949:	5300001
1950:	5400001
1951:	5500001
1952:	5600001
1953:	5700001
how to read serial numbers...

Belt Pulley

Belt Pulley
Diameter:	13 inches 33 cm
Width:	8.25 inches 20 cm
RPM:	814
Speed:	2770 ft/min 844.30 meters/min

J.I. Case LA Power

J.I. Case LA Power Drawbar (claimed):51 hp
38.0 kW
Belt (claimed):58 hp
43.3 kW
Drawbar (tested):51.73 hp
38.6 kW
Belt (tested):59.60 hp
44.4 kW
power test details ...

1940 - 1953

Standard-tread tractor

Nebraska Tractor Test 480

Nebraska Tractor Test 480
Gasoline 4-speed 2WD August 15 - 28, 1952 Link: Nebraska Tractor Test 480 file
Belt power (max):	58.53 hp 43.6 kW
Belt fuel use (max):	5.8 gal/hour 22.0 l/hour
Drawbar performance
Max power:	51.68 hp 38.5 kW
Gear 3 used for power test.
Max pull:	6,659 lbs 3020 kg
Gear 1 used for pull test.

Nebraska Tractor Test 481

Nebraska Tractor Test 481
Tractor fuel 4-speed 2WD August 18 - 29, 1952 Link: Nebraska Tractor Test 481 file
Belt power (max):	48.86 hp 36.4 kW
Belt fuel use (max):	5.0 gal/hour 18.9 l/hour
Drawbar performance
Max power:	44.51 hp 33.2 kW
Gear 3 used for power test.
Max pull:	6,444 lbs 2922 kg
Gear 1 used for pull test.

Nebraska Tractor Test 482

Nebraska Tractor Test 482
LP gas 4-speed 2WD August 21 - September 6, 1952 Link: Nebraska Tractor Test 482 file
Belt power (max):	59.60 hp 44.4 kW
Belt fuel use (max):	6.7 gal/hour 25.4 l/hour
Drawbar performance
Max power:	51.73 hp 38.6 kW
Gear 3 used for power test.
Max pull:	6,874 lbs 3118 kg
Gear 1 used for pull test.

J.I. Case LA Engines

J.I. Case LA Engines J.I. Case 6.6L 4-cyl gasoline J.I. Case 6.6L 4-cyl tractor fuel J.I. Case 6.6L 4-cyl LP gas Fuel tank:31 gal
117.3 L (gas)
29 gal
109.8 L (tractor fuel)
Aux. fuel:2 gal
7.6 L
Engine details ...

1940 - 1953

Standard-tread tractor

Engines overview

Engines overview
J.I. Case 6.6L 4-cyl gasoline
J.I. Case 6.6L 4-cyl tractor fuel
J.I. Case 6.6L 4-cyl LP gas

Engine Detail

Engine Detail
J.I. Case
gasoline
4-cylinder
liquid-cooled
Displacement:	403.2 ci 6.6 L
Bore/Stroke:	4.625x6 inches 117 x 152 mm
Air cleaner:	oil bath
Compression:	4.83 : 1
Rated RPM:	1100
Firing order:	1-3-4-2
Starter volts:	6
Oil capacity:	15 qts 14.2 L
Coolant capacity:	61 qts 57.7 L
Sparkplug gap:	0.030 inches 0.762 mm
Intake valve clearance:	0.018 inches 0.457 mm *Cold
Exhaust valve clearance:	0.018 inches 0.457 mm *Cold

Engine Detail

Engine Detail
J.I. Case
tractor fuel
4-cylinder
liquid-cooled
Displacement:	403.2 ci 6.6 L
Bore/Stroke:	4.625x6 inches 117 x 152 mm
Air cleaner:	oil bath
Compression:	4.09 : 1
Rated RPM:	1100
Firing order:	1-3-2-4
Starter volts:	6
Oil capacity:	15 qts 14.2 L
Sparkplug gap:	0.030 inches 0.762 mm
Intake valve clearance:	0.018 inches 0.457 mm cold
Exhaust valve clearance:	0.018 inches 0.457 mm cold

Engine Detail

Engine Detail
J.I. Case
LP gas
4-cylinder
liquid-cooled
Displacement:	403.2 ci 6.6 L
Bore/Stroke:	4.625x6.00 inches 117 x 152 mm
Air cleaner:	oil bath
Compression:	7.58:1
Rated RPM:	1150
Firing order:	1-3-2-4

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Brakes:differential mechanical disc
Cab:Open operator station.
Transmission:4-speed unsynchronized gear
Transmission details ...

1940 - 1953

Standard-tread tractor

Transmission

Transmission
Type:	unsynchronized gear
Gears:	4 forward and 1 reverse

Speeds

Speeds

Power Take-off (PTO)

Power Take-off (PTO) Rear RPM:550

Dimensions & Tires

Dimensions & Tires Weight:7515 lbs
3408 kg
Front tire:7.50-18
Rear tire:15-30
Full dimensions and tires ...

1940 - 1953

Standard-tread tractor

J.I. Case LA Tires

J.I. Case LA Tires
Ag front:	7.50-18
Ag rear:	15-30

Dimensions

Dimensions
Operating weight:	7515 lbs 3408 kg
Ballasted weight:	10860 lbs 4926 kg

LA Serial Numbers

LA Serial Numbers 1940:4400001
1941:4500001
1942:4600001
1943:4700001
1944:4800001
1945:4900001
1946:5000001
1947:5100001
1948:5200001
1949:5300001
1950:5400001
1951:5500001
1952:5600001
1953:5700001

how to read serial numbers...