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Ford 5600, 6600 & 7600 Tractor Specifications

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Complete specifications for the Ford 5600, 6600 and 7600 agricultural tractors, transcribed from the specifications section of the factory operator's manual (SE 3502), which covers all three models in one book. All are four-cylinder tractors rated at 2100 rpm, with single dry plate clutches, mechanically actuated wet disc brakes, independent PTO, and a Category II three-point linkage at 2500 psi.

The manual documents four engines, not three. The 6600 was offered as a gasoline tractor as well as a diesel, running 7.75:1 compression against the diesel's 16.3:1, with a smaller battery and an updraft carburettor. The 5600 diesel is the odd one on displacement at 233 cu. in.; the three 256 cu. in. engines differ in compression, the 7600 sitting lowest at 15.6:1.

Configurations run wider than the model names suggest: All Purpose, Row Crop with a wide front end, Row Crop tricycle, and for the 6600 an Orchard specification with its own tire fitments.

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Engines

Specification 5600 Diesel 6600 Gasoline 6600 Diesel 7600 Diesel
Cylinders 4 4 4 4
Displacement, CID (cc) 233 (3818) 256 (4195) 256 (4195) 256 (4195)
Bore, in. (mm) 4.2 (107) 4.4 (112) 4.4 (112) 4.4 (112)
Stroke, in. (mm) 4.2 (107) 4.2 (107) 4.2 (107) 4.2 (107)
Compression Ratio 16.3 : 1 7.75 : 1 16.3 : 1 15.6 : 1
Firing Order 1-3-4-2 1-3-4-2 1-3-4-2 1-3-4-2
Idle Speed (rpm) 600–700 600–700 600–700 600–700
Maximum Speed (rpm) 2325–2375 2285–2385 2325–2375 2325–2375
Rated Speed (rpm) 2100 2100 2100 2100
Valve Clearance, warm (Intake, go) 0.014 in. (0.355 mm) 0.014 in. (0.355 mm) 0.014 in. (0.355 mm) 0.014 in. (0.355 mm)
Valve Clearance, warm (Intake, no go) 0.016 in. (0.406 mm) 0.016 in. (0.406 mm) 0.016 in. (0.406 mm) 0.016 in. (0.406 mm)
Valve Clearance, warm (Exhaust, go) 0.017 in. (0.432 mm) 0.017 in. (0.432 mm) 0.017 in. (0.432 mm) 0.017 in. (0.432 mm)
Valve Clearance, warm (Exhaust, no go) 0.019 in. (0.482 mm) 0.019 in. (0.482 mm) 0.019 in. (0.482 mm) 0.019 in. (0.482 mm)

Capacities

Component 5600 6600 7600
Fuel Tank 20.0 U.S. gals. (16.6 Imp., 75.6 litres) 20.0 U.S. gals. (16.6 Imp., 75.6 litres) 20.0 U.S. gals. (16.6 Imp., 75.6 litres)
Cooling System 13.0 U.S. qts. (10.8 Imp., 12.3 litres) 13.0 U.S. qts. (10.8 Imp., 12.3 litres) 14.0 U.S. qts. (11.7 Imp., 13.3 litres)
Transmission (5600 less Dual Power) 12.0 U.S. qts. (10.0 Imp., 11.4 litres) — —
Transmission and Rear Axle, 540 PTO 56.0 U.S. qts. (46.3 Imp., 40.7 litres)1 56.0 U.S. qts. (46.3 Imp., 40.7 litres)1 56.0 U.S. qts. (46.3 Imp., 40.7 litres)1
Transmission and Rear Axle, 540/1000 PTO 60.0 U.S. qts. (49.6 Imp., 56.8 litres) 60.0 U.S. qts. (49.6 Imp., 56.8 litres) 60.0 U.S. qts. (49.6 Imp., 56.8 litres)
Rear Axle (5600 less Dual Power) 43.0 U.S. qts. (35.5 Imp., 40.7 litres) — —
Power Steering 4.6 U.S. pts. (3.8 Imp., 2.2 litres) 4.6 U.S. pts. (3.8 Imp., 2.2 litres) 4.6 U.S. pts. (3.8 Imp., 2.2 litres)

Cooling System

Type Pressurized liquid
Water Pump Centrifugal with recirculating bypass
Drive V-belt
Fan Belt Deflection New belt 1/2 in. (12.7 mm); used belt 3/4 in. (19.1 mm), with 25 lbs. (11.34 kg) force applied midway between pulleys
Thermostat Starts to Open 168°F (75.7°C)
Thermostat Fully Open 192°F (88.8°C)
Radiator Cap 7 psi (0.49 kg/cm²)

Electrical

Alternator 12 volt, heavy duty. 32 amp standard on 5600 and 6600; 51 amp optional on 5600 and 6600, standard on 7600
Regulator Transistorized
Battery, 6600 Gasoline Row Crop 73 amp/hr, negative ground
Battery, 6600 Gasoline All Purpose 80 amp/hr, negative ground
Battery, 5600, 6600 and 7600 Diesel (Row Crop and All Purpose) 128 amp/hr, negative ground
Starter Pre-engaged with solenoid
Headlamps No. 4419
Tail Lamp No. 1155
Flashing Warning Lamps No. 1156
Instrument Panel Bulbs No. 1895
Air Restriction Indicator Bulb (7600 only) FEY-15021-A

Ignition System

Diesel Compression ignition
Gasoline Spark ignition with coil and distributor
Distributor Point Gap 0.022–0.028 in. (0.559–0.711 mm)
Dwell Angle 35–38°
Timing (at 600–700 rpm, vacuum line disconnected) 2° ± 2° before top dead center
Spark Plug Type Motorcraft AG5
Spark Plug Gap 0.023–0.027 in. (0.584–0.686 mm)

Fuel System

Diesel Injection Pump Type Distributor on the 5600 and 6600; in-line on the 7600
Diesel Injection Pump Timing 23° before top dead center
Fuel Filtration Type Throw away element
Fuel Filter Change Interval 600 hours
Gasoline Carburetor Type Updraft
Gasoline Initial Idle Adjustment 1 full turn out from closed position

Clutch

Type Single dry plate
Size, 5600 12.00 in. (304.8 mm)
Size, 6600 12.00 in. (304.8 mm)
Size, 7600 13.00 in. (330.2 mm)

Brakes

Type Mechanically actuated wet disc

Steering

Type Integral cylinder hydraulic power assist
All Purpose Power assist
Row Crop Hydrostatic power assist
Turns Lock-to-Lock 4
Front Wheel Toe-In 0 to 1/2 in. (12.7 mm)
Pump Type Gear
Pump Relief Valve Setting 1050–1150 psi (74.0–81.1 kg/cm²)

Power Take-Off

Type Independent
Speed Range 540 standard on the 5600 and 6600; 540/1000 standard on the 7600 and optional on the 5600 and 6600
Engine Speed at 540 PTO rpm 1900 rpm (6-spline shaft only)
Engine Speed at 1000 PTO rpm 2060 rpm (21-spline shaft only)

Hydraulic System

Type Hydraulic power lift with draft sensing, position control, and Category II three-point linkage
Draft Sensing, standard on 5600 and 6600 Dual sensing upper link
Draft Sensing, standard on 7600 and optional on 5600 and 6600 Load Monitor and dual sensing upper link
Pump Type Gear
System Relief Valve Setting 2500 psi (1757.5 kg/cm²)2

Cast Iron Weights

Front End Weights 75 lbs. (34.02 kg) each
Front Wheel Weights 42.5 lbs. (19.28 kg) each
Rear Wheel Weights 100 lbs. (45.36 kg) each

Lubricants

Power Steering M2C41A
Hydraulic System and Rear Axle M2C53A
Transmission M2C53A
Front Wheel Bearings M1C137A
Lubrication Fittings M1C137B
Engine Oil M2C121A (Ford 300)
Temperature Diesel Gasoline
Below 32°F (0°C) Ford 300 Engine Oil, or Low Ash SAE 10W (CD) Ford 300 Engine Oil, or 10W (SE), 10W30 (SE) or 10W40 (SE)
Above 32°F (0°C) Ford 300 Engine Oil, or Low Ash SAE 30 (CD) Ford 300 Engine Oil, or 30W (SE), 10W30 (SE) or 10W40 (SE)

The manual adds that in areas where prolonged periods of extreme temperature are encountered, local lubricant practices are acceptable: Low Ash SAE 5W (CC) in extremely cold temperatures or Low Ash SAE 40 (CD) or SAE 50 (CD) in extremely high temperatures.

Fuel sulfur note, as printed: with a sulfur content below 1.0%, an API CC oil may be used instead of CD, but the oil and filter change interval must be reduced to 150 hours. Between 1.0% and 1.3% sulfur a CD oil must be used (except at 10°F and below), with the interval reduced to 150 hours. Fuel with a sulfur content above 1.3% is not recommended.

General Dimensions

Measured with 6.00 × 16 front tires on All Purpose tractors, 7.50 × 15 front tires on Row Crop tractors, and 13.6 × 38 rear tires.

Dimension All Purpose Row Crop, wide front end Row Crop, tricycle
Length 141.6 in. (3596.6 mm) 153.3 in. (3598.9 mm)3 145.3 in. (3690.6 mm)
Height at hood 60.9 in. (1546.8 mm) 68.5 in. (1742.4 mm) 68.5 in. (1742.4 mm)
Height at top of exhaust 96.0 in. (2438.4 mm) 117.1 in. (2974.3 mm) 117.1 in. (2974.3 mm)
Width at minimum tread setting 68.6 in. (1742.4 mm) 68.6 in. (1742.4 mm) 68.6 in. (1742.4 mm)
Crop clearance at front axle 18.0 in. (457.2 mm) 24.0 in. (608.6 mm) —
Crop clearance at rear axle 16.3 in. (414.0 mm) 16.3 in. (414.0 mm) 16.3 in. (414.0 mm)
Turning radius with brakes 120 in. (3048.0 mm) 120 in. (3048.0 mm) 120 in. (3048.0 mm)
Turning radius without brakes 148 in. (3759.2 mm) 148 in. (3759.2 mm) 148 in. (3759.2 mm)

Wheelbase

All Purpose 87.5 in. (2222.5 mm)
Row Crop, wide front axle, short wheelbase 88.0 in. (2235.2 mm)
Row Crop, wide front axle, long wheelbase 104.0 in. (2641.6 mm)
Row Crop, tricycle front axle 96.0 in. (2438.4 mm)

Weight (less options)

Configuration 5600 6600 7600
All Purpose 5475 lbs. (2487 kg) 5475 lbs. (2487 kg) 5780 lbs. (2622 kg)
Row Crop — 6054 lbs. (2746 kg) 6349 lbs. (2880 kg)

Tires

S indicates standard, O indicates optional. ORCH is the 6600 Orchard specification. This is a dense matrix in the original; if you are buying tires on the strength of it, check against the manual page as well.4

Size and type 5600 AP 6600 AP 6600 RC 6600 ORCH 7600 AP 7600 RC
Front
7.50-16 (6 ply, F2) S S S — S S
6.00-16 (4 ply, F2) O O O O — —
7.50-16 (4 ply, F2) O O — O — —
7.50-18 (4 ply, F2) O O O — — —
7.50-16 (8 ply, F2) O O — — — —
7.50-18 (6 ply, F2) O O O — O O
10.00-16 (6 ply, F2) O — O — O O
7.50-16 (6 ply, F2) — O O — — —
7.50-15 (6 ply, F2) — O O — — O
7.50-15 (6 ply, I1) — O — S — —
9.00-10 (4 ply, I1) — — — O — —
7.50-16 (6 ply, I1) — — — O — —
9.00-10 (10 ply, F3) — — — O — —
7.50-16 (8 ply, I1) — O — — — —
7.50-16 (8 ply, TR) — O — — — —
Rear
16.9-30 (6 ply, R1) S S O — S —
18.4-34 (6 ply, R1) O O O — O O
13.6-38 (4 ply, R1) O O O — O O
15.5-38 (6 ply, R1) O O S — O S
15.5-38 (6 ply, R2) O O O — O O
18.4-34 (6 ply, R2) O O O — O O
16.9-38 (6 ply, R1) O O O — O O
16.9-34 (6 ply, R1) O O O — O O
18.4-26 (6 ply, R3) O O — — O —
18.4-30 (6 ply, R1) O O O — O O
18.4-30 (6 ply, R2) O O O — O O
14.9-30 (6 ply, R1) O O — — — —
14.9-24 (6 ply, R4) — O — — — —
16.9-24 (8 ply, R4) — O — — — —
16.9-24 (6 ply, R1) — — — S — —
18.4-16.1 (6 ply, R1) — — — O — —
18.4-16.1 (6 ply, R3) — — — O — —
18.4-26 (6 ply, R1) — — — O — —

Road Speeds

All models, with and without Dual Power, in normal drive.5

Gear 1500 rpm (mph) 1900 rpm (mph) 2100 rpm (mph) 1500 rpm (km/h) 1900 rpm (km/h) 2100 rpm (km/h)
1 1.1 1.4 1.5 1.8 2.2 2.4
2 1.4 1.8 2.0 2.2 2.9 3.2
3 2.5 3.2 3.5 4.0 5.1 5.6
4 3.4 4.3 4.7 5.4 6.9 7.5
5 4.0 5.1 5.6 6.4 8.2 9.0
6 5.0 6.3 7.0 8.0 10.1 11.2
7 8.9 11.2 12.4 14.2 17.9 19.8
8 12.0 15.2 16.8 19.2 24.3 26.9
Low reverse 1.6 2.1 2.3 2.6 3.4 3.7
High reverse 5.8 7.3 8.1 9.3 11.7 13.0

Notes:
1 Reproduced as printed, but the metric figure is wrong. 56.0 U.S. quarts is 53.0 litres, not 40.7. The 40.7 litre figure belongs to the row two lines below it, where 43.0 U.S. quarts does convert to 40.7 litres, so it appears to have been copied up the column. The Ford 6700 and 7700 manual prints the same 56.0 U.S. quart capacity correctly as 53.0 litres. Use 53 litres.
2 Reproduced as printed. 2500 psi is about 175.8 kg/cm², not 1757.5. A decimal place has moved. The Ford 8600, 9000 and 9600 manuals all print the same 2500 psi setting as 175 kg/cm².
3 Reproduced as printed. 153.3 in. is about 3894 mm, not 3598.9. The All Purpose and tricycle lengths on the same line both convert correctly, so this figure is the odd one out.
4 The tire matrix runs to six configuration columns and more than thirty sizes in the original, set closely enough that column alignment takes care to read. It has been transcribed carefully and checked, but tires are expensive and rims are specific: confirm against the manual page or your tractor before ordering.
5 This table is identical to the road speed table in the Ford 7000 manual at the 1500 and 2100 rpm columns, gear for gear including both reverses. The two share the same eight-speed transmission.
All specifications transcribed from the specifications section of the Ford 5600, 6600 and 7600 operator's manual, manual code SE 3502, originally published by Ford Motor Company. Ford reserved the right to change specifications without notice; verify against your tractor's serial number before ordering parts or setting clearances.

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Manual code: SE 3502

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