John Deere M

1947 - 1952

Two-Cylinder Letter Series

Utility tractor

Manufacturer

John Deere

Utility tractor

Built in Dubuque, Iowa, USA

Total built

45,799

Original price was $1,075 in 1952

The M had been in development for several years during World War II prior to its introduction in 1947. The M replaced the H, L, and LA models. Three additional variants; the MT tricycle, MC crawler model, and MI industrial model were also built. The M was the first tractor to be produced at Deere's new Dubuque factory. It was the first to use Deere's Touch-O-Matic hydraulic system. PTO and electric starting were standard features.

M

utility

MT

row-crop

MC

crawler

MI

industrial

John Deere 1.6L 2-cyl gasoline

Fuel tank

10 gal 37.9 L

4-speed unsynchronized gear

Drawbar (claimed)

18 hp 13.4 kW

Belt (claimed)

20 hp 14.9 kW

Drawbar (tested)

18.15 hp 13.5 kW

Belt (tested)

20.45 hp 15.2 kW

Two-wheel drive

Manual steering

Differential mechanical disc brakes

Open operator station.

Type

Touch-O-Matic

Pressure

700 psi 48.3 bar

Total flow

4.25 gpm 16.1 lpm

Oil type

10W

10W

Type

Deere Quik-Tatch

Rear PTO

transmission

Rear PTO Type

550

Wheelbase

70 inches 177 cm

Weight

2600 lbs 1179 kg

Front tire

4.00x15

Rear tire

8-24

M 3-point Hitch Conversion: Modification of the M's hitch to a three-point hitch

Diameter

7.25 inches 18 cm

Width

6.4 inches 16 cm

RPM

1575

Speed

2989 ft/min 911.05 meters/min

Ground

positive

Battery volts

6

The John Deere Styled "Letter" Series by J.R. Hobbs

Tractors 1918-1976 published by John Deere*

Model "M" General-Purpose Tractor published in 1946, by John Deere

Operator's Manual Model "M" Tractor (OM-TM3) published in 1951

*Publication contains known errors.

Manufacturer

John Deere

Fuel Type

Gasoline

Configuration

2-cylinder, liquid-cooled

The model M engine was also available as an all-fuel engine. Production numbers are unknown.

Displacement

100.5 ci 1.6 L

Bore/Stroke

4.00x4.00 inches 102 x 102 mm

Compression

6:1

Rated RPM

1650

Firing order

1-2

Starter volts

6

Oil capacity

5 qts 4.7 L

Coolant capacity

14 qts 13.2 L

Sparkplug gap

0.025 inches 0.635 mm

Point gap

0.022 inches 0.559 mm

Intake valve clearance

0.012 inches*Cold 0.305 mm

Exhaust valve clearance

0.012 inches*Cold 0.305 mm

Type

unsynchronized gear

Gears

4 forward and 1 reverse

With 9-24 rear tires.

Ag front

4.00x15

Ag rear

8-24

Ag front

5.00x15

Ag rear

9-24

10-24

Wheelbase

70 inches 177 cm

Length

110 inches 279 cm

Width

51 inches 129 cm

Height (hood)

56 inches 142 cm

Height (exhaust)

66 inches 167 cm

Operating weight

2600 lbs 1179 kg

Ground clearance

21 inches 53 cm

Front tread

38 to 52 inches 96 to 132 cm

Rear tread

38 to 52 inches 96 to 132 cm

Gasoline 4-speed 2WD October 6 - 16, 1947 Link: Nebraska Tractor Test 387 file

Belt power (max)

20.45 hp 15.2 kW

Belt fuel use (max)

2.0 gal/hour 7.6 l/hour

Drawbar performance

Max power

18.15 hp 13.5 kW

Gear 3 used for power test.

Max pull

2,329 lbs 1056 kg

Gear 1 used for pull test.