Ford 3400, 3500, 4400 and 4500 Industrial Tractor Specifications

The Ford 3400, 3500, 4400 and 4500 were three-cylinder utility and industrial tractors built from 1965 to 1975 at Ford's Highland Park, Michigan plant. The 3400 and 3500 share the smaller 158 cu in (2,590 cc) gasoline / 175 cu in (2,868 cc) diesel engines, while the heavier 4400 and 4500 use the 201 cu in (3,294 cc) gasoline and diesel engines. Ford classified the 3400 and 4400 as Utility models and the 3500 and 4500 as true Industrial models — the Industrial chassis carries heavier front and rear axles and offers transmission options (such as Power Reversing) not available on the Utility versions. All four were commonly fitted with loaders and backhoes and are grouped together in the factory operator's manual covered here.

The specifications below are grouped by system for easy reference. Where a value applies only to certain models, the model is named; an em dash (—) indicates the option was not offered for that model.

Engine

The 3400/3500 use a 158 cu in gasoline or 175 cu in diesel three-cylinder engine; the 4400/4500 use the larger 201 cu in three-cylinder gasoline or diesel.

Specification	3400 / 3500 Gas	3400 / 3500 Diesel	4400 / 4500 Gas	4400 / 4500 Diesel
No. of Cylinders	3	3	3	3
Bore	4.2 in (106.68 mm)	4.2 in (106.68 mm)	4.4 in (111.76 mm)	4.4 in (111.76 mm)
Stroke	3.8 in (96.52 mm)	4.2 in (106.68 mm)	4.4 in (111.76 mm)	4.4 in (111.76 mm)
Displacement	158 cu in (2,590 cc)	175 cu in (2,868 cc)	201 cu in (3,294 cc)	201 cu in (3,294 cc)
Compression Ratio	7.75:1	16.5:1	7.75:1	16.5:1
Firing Order	1-2-3	1-2-3	1-2-3	1-2-3
Idle Speed	600–700 rpm	600–700 rpm	600–700 rpm	600–700 rpm
Max Speed, No Load	2,285–2,385 rpm	2,225–2,275 rpm	2,395–2,495 rpm	2,425–2,475 rpm
Max Speed, Rated	2,100 rpm	2,000 rpm	2,200 rpm	2,200 rpm

Valve Clearance (lash — warm engine), all models:
Intake — 0.014 in. go / 0.016 in. no-go (0.355–0.406 mm)
Exhaust — 0.017 in. go / 0.019 in. no-go (0.432–0.482 mm)

Ignition System

Diesel Type	Compression
Gasoline Type	Spark
Gasoline Method	Coil and distributor
Distributor Point Gap (breaker)	0.022–0.028 in. (0.559–0.711 mm)
Dwell Angle	35°–38°
Timing (600–700 rpm, vacuum line disconnected)	2° ± 2° BTDC
Spark Plug Type	Autolite AG5
Spark Plug Gap	0.023–0.027 in. (0.584–0.686 mm)

Fuel System

Carburetor Type (gasoline)	Updraft
Initial Idle Screw Adjustment	Approximately one full turn out
Injection Pump — 3400 & 3500 (diesel)	In-line
Injection Pump — 4400 & 4500 (diesel)	Distributor
Injection Timing (diesel)	19° BTDC

Cooling System

Type	Pressurized liquid, recirculating bypass
Water Pump Type	Centrifugal
Water Pump Drive	V-belt
Fan Diameter	16 in. (406 mm)
Fan Belt Deflection	1/4–1/2 in. (6.350–12.700 mm) with 60–90 lb (27.2–40.8 kg) force applied midway between generator and crankshaft pulleys
Thermostat — Starts to Open	188°F (87°C)
Thermostat — Fully Open	212°F (100°C)
Radiator Cap	7 psi (0.4921 kg/cm²) standard

Electrical System

Generator	12-volt, shunt-wound
Generator Output	22 amps
Regulator	Current voltage
Battery — Gasoline Engine	80 amp-hour rating
Battery — Diesel Engine	128 amp-hour rating
Ground	Negative
Starting Motor	Positive engagement
Headlamp Sealed Beam Unit	No. 4419
Tail Lamp Bulb	No. 1155
Flasher Warning Lamp Bulb	No. 1156
Instrument & Warning Light Bulbs	No. 1895

Clutch

Application	Type
3400 & 3500 w/ Transmission P.T.O.	12 in. (304.8 mm) single dry plate
3400 w/ Live P.T.O.	11 in. (279.4 mm) double dry plate w/ 8-1/2 in. (215.9 mm) P.T.O. disc
4400 & 4500 w/ Independent P.T.O.	13 in. (330.2 mm) single dry plate

Pedal Free Travel	Measurement
3400 w/ Live P.T.O.	1-3/8 – 1-5/8 in. (34.9–41.3 mm)
3400 & 3500 w/ Transmission P.T.O.	1-1/8 – 1-3/8 in. (28.6–34.9 mm)
4400 & 4500 w/ Transmission P.T.O.	1-1/4 – 1-1/2 in. (31.8–38.1 mm)
4400 & 4500 w/ Independent P.T.O.	1-5/8 – 1-7/8 in. (41.3–47.6 mm)

Brakes

Ford 3400 & 3500 — mechanical (expanding shoe), 14 in. (355.6 mm) drum diameter.

Specification	3400	3500
Shoe Width	1.5 in. (38.1 mm)	2.0 in. (50.8 mm)
Total Lining Area	98.5 sq in (635.5 sq cm)	109.0 sq in (703.3 sq cm)

Ford 4400 & 4500 — mechanical (wet disc).

Disc Diameter	8.0 in. O.D. (203.2 mm) / 6.8 in. I.D. (172.7 mm)
Lining Area	168.0 sq in (1,083.9 sq cm)

Steering

Type	Manual or hydraulic power assist
Turns Lock-to-Lock — 3400 & 3500	4.8
Turns Lock-to-Lock — 4400 & 4500	3.3
Power Assist Pump Type	Gear
Pump Capacity at 800 rpm (3400 & 4400)	3.4 U.S. gpm (2.8 Imp. gpm,¹ 12.9 L/min)
Pump Capacity at 1000 rpm (3500 & 4500)	4.2 U.S. gpm (3.5 Imp. gpm,¹ 15.9 L/min)
Relief Valve Setting — 3400	600–700 psi (42.2–49.2 kg/cm²)
Relief Valve Setting — 3500 & 4400	1,050–1,150 psi (73.8–80.9 kg/cm²)
Relief Valve Setting — 4500	1,200–1,300 psi (84.4–91.4 kg/cm²)

Power Take-Off

Rear PTO is 540 rpm. Engine speed required to deliver 540 rpm at the PTO depends on transmission and PTO configuration:

Configuration	Engine Speed for 540 rpm P.T.O.
4-Speed (Transmission P.T.O.)	1,500 rpm
4-Speed in Over-Range, w/ Over/Under Auxiliary (Transmission P.T.O.)	1,000 rpm
6 × 4 Manual Reversing (Transmission P.T.O.) — 3400 & 3500	1,300 rpm
6 × 4 Manual Reversing (Transmission & Ind. P.T.O.) — 4400 & 4500	1,800 rpm
8-Speed (Transmission P.T.O.) — 3400 & 3500	1,600 rpm
8-Speed (Transmission P.T.O.) — 4400 & 4500	1,800 rpm
8-Speed (Live P.T.O.) — 3400	1,800 rpm
8-Speed (Independent P.T.O.) — 4400 & 4500	1,800 rpm
Select-O-Speed — 3400, 3500, 4400 & 4500	1,800 rpm

Hydraulic Lift System

Optional live hydraulic lift with dual sensing draft control, flow control, position control and Category I 3-point linkage on all four models.

Pump Type — w/ Select-O-Speed (all models)	Piston, engine driven
Pump Type — 4400 & 4500 w/ 8-speed (Ind. P.T.O.)	Gear, P.T.O. driven
Engine-Driven Piston Pump Capacity	5 U.S. gpm (4.2 Imp. gpm, 18.9 L) at 2,000 rpm
P.T.O.-Driven Gear Pump Capacity	5.5 U.S. gpm (4.6 Imp. gpm, 20.8 L) at 2,200 rpm
System Relief Valve Setting	2,500 psi (175.8 kg/cm²)

Hydraulic Package (Ford 4500 only) — vane pump:

Capacity at 1,900 psi (133.6 kg/cm²)	27.8 U.S. gpm (23.2 Imp. gpm, 105.2 L) at 2,200 rpm
Capacity at 2,200 psi (154.7 kg/cm²)	27.4 U.S. gpm (22.8 Imp. gpm, 103.7 L) at 2,200 rpm

Capacities

Fluid capacities below are listed in U.S. measure, with Imperial and metric in parentheses. An em dash (—) means the option was not offered for that model.

Capacity	3400	3500	4400	4500
Fuel Tank	13 gal (10.8 Imp, 49.2 L)	16 gal (13.3 Imp, 60.6 L)	16 gal (13.3 Imp, 60.6 L)	16 gal (13.3 Imp, 60.6 L)
Cooling System	13.8 qt (11.5 Imp, 13.0 L)	13.8 qt (11.5 Imp, 13.0 L)	14 qt (11.6 Imp, 13.2 L)	15.3 qt (12.7 Imp, 14.5 L)
Engine Crankcase — with filter change	8 qt (6.7 Imp, 7.6 L)	8 qt (6.7 Imp, 7.6 L)	8 qt (6.7 Imp, 7.6 L)	8 qt (6.7 Imp, 7.6 L)
Engine Crankcase — without filter change	6 qt (5 Imp, 5.7 L)	6 qt (5 Imp, 5.7 L)	6 qt (5 Imp, 5.7 L)	6 qt (5 Imp, 5.7 L)
Hydraulic Lift (Rear Axle) — Trans. P.T.O. & Less P.T.O.	25.2 qt (21.1 Imp, 23.9 L)	25.2 qt (21.1 Imp, 23.9 L)	33.6 qt (28.0 Imp, 31.8 L)	33.6 qt (28.0 Imp, 31.8 L)
Hydraulic Lift (Rear Axle) — Live P.T.O.	25.2 qt (21.0 Imp, 23.9 L)	—	—	—
Hydraulic Lift (Rear Axle) — Ind. P.T.O.	—	—	32.4 qt (27.0 Imp, 30.7 L)	32.4 qt (27.0 Imp, 30.7 L)
Hydraulic Package — with loader	—	—	—	14 gal (11.7 Imp, 53.0 L)
Hydraulic Package — without loader	—	—	—	10.5 gal (8.8 Imp, 39.7 L)
Transmission — 4-Speed (Trans. P.T.O. & Less P.T.O.)	6.6 qt (5.5 Imp, 6.2 L)	6.6 qt (5.5 Imp, 6.2 L)	—	—
Transmission — 4-Speed w/ Over/Under Auxiliary	7 qt (5.8 Imp, 6.6 L)	7 qt (5.8 Imp, 6.6 L)	—	—
Transmission — 4-Speed Power Reversing	—	17 qt (14.2 Imp, 16.1 L)	—	17 qt (14.2 Imp, 16.1 L)
Transmission — 6 × 4 Manual Reversing (Trans. P.T.O. & Less P.T.O.)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)
Transmission — 6 × 4 Manual Reversing (Ind. P.T.O.)	—	—	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)
Transmission — 8-Speed (Trans. P.T.O. & Less P.T.O.)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)
Transmission — 8-Speed (Live P.T.O.)	13.2 qt (11.0 Imp, 12.5 L)	—	—	—
Transmission — 8-Speed (Ind. P.T.O.)	—	—	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)
Transmission — Select-O-Speed	12 qt (10.0 Imp, 11.4 L)	12 qt (10.0 Imp, 11.4 L)	13.2 qt (11.0 Imp, 12.5 L)	13.2 qt (11.0 Imp, 12.5 L)

Lubricants & Engine Oil

Engine oil recommendations by ambient temperature:

Temperature	Diesel (Viscosity & API)	Gasoline (Viscosity & API)
Below +10°F	SAE 5W (DM)	SAE 5W (MS) or SAE 5W-20W (MS)
+10°F to 40°F	SAE 10W (DS)	SAE 10W (MS) or SAE 5W-20W (MS)
32°F to 90°F	SAE 20 (DS)	SAE 20 (MS) or SAE 10W-30 (MS)
Above 75°F	SAE 30 (DS)	SAE 30 (MS) or SAE 10W-30 (MS)

Diesel fuel note: With sulfur content below 1.0%, an API DM diesel oil may be used in place of DS, but the oil and filter change interval must be reduced to 150 hours. With sulfur content above 1.0% but below 1.3%, a DS oil must be used (except at 10°F and below) and the change interval reduced to 150 hours. Fuel with sulfur content above 1.3% is not recommended.

Recommended lubricants:

Application	Specification
Manual Shift Transmission Oil	ESN-M2C77-A or M-4864-A
Select-O-Speed & Power Reversing Transmission Oil	ESN-M2C41-A or M2C41
Hydraulic Package (Ford 4500)	ESE-M2C48-A or M2C48-A
Hydraulic Lift / Rear Axle — 3400 & 3500	ESN-M2C77-A or M-4864-A
Hydraulic Lift / Rear Axle — 4400 & 4500	ESN-M2C53-A or M-2C53-B
Steering Gear Housing (Manual & Power)	ESEN-M2C94-A, ESW-M2C28-BA or M-4864-B
Power Steering Reservoir — 3400, 3500 & 4400	ESEN-M2C92-A or M2C41
Power Steering Reservoir — 4500	ESE-M2C48-A or M2C48-A
Front Wheel Bearings	Good quality, multi-purpose, lithium-base, cup-type grease
Lubrication Fittings & Manual Reversing Clutch Release Bearing	Good quality, multi-purpose, lithium-base, cup-type grease

Wheels & Tires

Position	3400	3500	4400	4500
Front — Standard	6.50-16 (6 ply I1)	7.50-16 (6 ply I1)	7.50-16 (6 ply I1)	7.50-16 (8 ply I1)
Front — Optional	6.00-16 (4 ply I1); 7.50-16 (6 ply I1)	7.50-16 (6 ply Truck)	6.00-16 (4 ply I1)	7.50-16 (8 ply Truck)
Rear — Standard	12.4-28 (4 ply R1)	13.6-28 (4 ply R1)	14.9-24 (4 ply R1)	14.9-24 (6 ply R4)
Rear — Optional	13.6-28 (4 ply R1); 13.6-28 (4 ply R3); 14.9-24 (6 ply R4); 16.9-24 (6 ply R1); 16.9-24 (6 ply R3); 16.9-24 (6 ply R4)	14.9-24 (6 ply R4); 16.9-24 (6 ply R1); 16.9-24 (6 ply R3); 16.9-24 (6 ply R4)	14.9-24 (6 ply R4); 16.9-24 (6 ply R1); 16.9-24 (6 ply R4); 16.9-24 (8 ply R4)	16.9-24 (6 ply R1); 16.9-24 (6 ply R3); 16.9-28 (8 ply R1); 16.9-28 (8 ply R4)

Cast Iron Weights

Weight	Per-Weight Mass & Maximum
Front Wheel — 3400	45 lb (20.41 kg) each, two segments required per wheel
Front Wheel — 3500, 4400 & 4500	95 lb (43.09 kg) each, maximum of one per wheel
Rear Wheel, 24-in. wheels — 3400	100 lb (45.36 kg) each, maximum of three per wheel
Rear Wheel, 24-in. wheels — 3500 & 4400	100 lb (45.36 kg) each, maximum of four per wheel
Rear Wheel, 24-in. wheels — 4500	100 lb (45.36 kg) each, maximum of six per wheel
Rear Wheel, 28-in. wheels — 3400 & 3500	80 lb (36.28 kg) each, maximum of three per wheel
Rear Wheel, 28-in. wheels — 4500	100 lb (45.36 kg) each, maximum of six per wheel

General Dimensions

Dimension	3400	3500	4400	4500
Length	120-1/2 in. (306.07 cm)	120-1/2 in. (306.07 cm)	121-7/16 in. (308.45 cm)	122 in. (309.88 cm)
Height to Top of Exhaust	83-1/8 in. (211.14 cm)	80-1/2 in. (204.47 cm)	80-1/2 in. (204.47 cm)	81-1/2 in. (207.01 cm)
Height to Hood Line	54-7/16 in. (138.27 cm)	54 in. (137.16 cm)	53-3/4 in. (136.52 cm)	55-5/8 in. (141.29 cm)
Height to Steering Wheel	58-1/8 in. (150.49 cm)	59 in. (149.86 cm)	58-1/8 in. (150.49 cm)	58-3/4 in. (149.22 cm)
Width	68-7/16 in. (173.83 cm)	66 in. (167.64 cm)	70-7/8 in. (178.11 cm)	70-1/2 in. (179.07 cm)
Ground Clearance — Front Axle	22 in. (55.88 cm)	11-5/8 in. (29.52 cm)	11-5/8 in. (29.52 cm)	12-3/4 in. (32.38 cm)
Ground Clearance — Transmission	13-7/16 in. (34.13 cm)	14-3/8 in. (36.51 cm)	13-3/4 in. (34.92 cm)	14 in. (35.56 cm)
Turning Radius — without brakes	10 ft 4 in. (314.96 cm)	10 ft 9 in. (327.66 cm)	11 ft 2 in. (340.36 cm)	12 ft 1 in. (368.30 cm)
Turning Radius — with brakes	9 ft 9 in. (297.18 cm)	9 ft 9 in. (297.18 cm)	10 ft 2 in. (309.88 cm)	11 ft (335.28 cm)
Front Wheel Tread	54 in. (137.16 cm)	56 in. (142.24 cm)	56 in. (142.24 cm)	56 in. (142.24 cm)
Rear Wheel Tread	52–76 in. (132.08–193.04 cm)	52–76 in. (132.08–193.04 cm)	56–76 in. (142.24–193.04 cm)	56–76 in. (142.24–193.04 cm)
Weight (less options)	3,400 lb (1,542.2 kg)	3,800 lb (1,723.7 kg)	4,340 lb (1,968.6 kg)	4,510 lb (2,045.7 kg)

¹ The original factory manual prints these Power Assist Pump capacities as “28.3 Imp. gpm” and “35.0 Imp. gpm.” These appear to be typographical errors in the source (a misplaced decimal point); the correct Imperial conversions are approximately 2.8 and 3.5 Imp. gpm, which agree with the U.S. gpm and litres-per-minute figures shown. Values corrected here for accuracy.
All specifications are transcribed from the original Ford 3400, 3500, 4400 & 4500 operator's manual and are provided for reference. U.S. and metric figures are reproduced as published; minor rounding differences between unit systems reflect the original printing. Always confirm against your unit's serial number and the manual before service or repair.