price new in 1939 585.00
shipping weight 2,340
Serial Numbers
The Ford 9N serial number is located on the left hand side of the engine block and has a prefix of 9N (example 9N10233).
9N
1939 ………. 1 – 10233
1940 ………. 10234 – 45975
1941 ………. 45976 – 89887
1942 ………. 89888 – 105411
1943 ………. 105412 -109500
Serial numbers for 9N and 2N tractors overlap for 1942 and 1943
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Engine
side valve
four cylinder L head
120 CID
23.6 belt pulley horsepower
3.187 ” bore
3.75 stroke
6:1 compression ratio
Engine Lubrication
gear pump supplies direct pressure oiling to crankshaft, camshaft, and connecting rod bearings.
Oil Filter
replaceable cartridge type
Governor
variable speed, mechanically operated centrifugal type regulated from 400 to 2,000 rpm
Ignition
direct driven distributor in unit with coil in waterproof housing, fully automatic spark advance
Generator
6-volt with third brush control
Starter
6-volt conventional automobile starter with safety starter switch interlocked with gearshift lever
Battery
6-volt
85 ampere-hour capacity
13 high plates
Cooling System
pump with circulation of water through tube & fin radiator & prelubricated bearings
pressurized system
belt driven 16″ six-blade fan
Fuel Supply
10 US gallon welded steel tank under hood
2 way valve on the sediment bulb allows for 1 gallon to be held in reserve
Air Cleaner
oil bath
Carberetor
updraft
Muffler
reverse flow type
Clutch
9 inch single dry plate
Final Drive and Rear Axle
spiral bevel gear drive with a straddle mounted pinion
6.66 to 1 ratio
four pinion differential
semi floating drive axle with intregal axle shafts
Steering
bevel pinion and twin bevel sectors controlled both front wheels independently
18″ steering wheel
Transmission
3 speeds forward and one reverse, sliding gear transmission with an optional step-up
optional Sherman step-up
Power Take-off Shaft
1.125″
6 spline
545 rpm at engine speed of 1,500 rpm
Hydraulic Implement Control
four cylinder pump supplies oil under pressure to the lift cylinder
valve has automatic and manual control
control lever is located at the operator’s right side
Brakes
14″ x 2″, 2 shoe brakes
Wheels
front: steel disc fitted with 4″ x 19″
rear: steel disc fitted with 10″ x 28″ (8″ x 32″ on early models)
Paint Color
dark forest grey
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Tune up Information
Firing order: 1-2-4-3
Valve Tappet Gap (cold)
Inlet: 0.010-0.012 in. (0.26-0.30 mm)
Exhaust: 0.014-0.016 in. (0.36-0.40 mm)
Valve Face Angle
Inlet & Exhaust: 45 deg.
Valve Seat Angle
Inlet & Exhaust: 45 deg.
Ignition Distributor Make: Ford
Distributor Model: 9N12100
Breaker Point Gap: 0.015 in. (0.38 mm)
Retarded Timing: top dead center
Advance Timing: 25 deg. before top dead center
Flywheel Timing Mark Indicating
Retarted Timing: none
Advance Timing: none
Spark Plug: Champion H10 or compatible
Spark Plug Electrode Gap: 0.025-0.028 in. (0.64-0.71 mm)
Carburetor: Marvel Schebler TSX33
Carburetor Float Setting: 9/32″ (7 mm)
Carburetor Initial Adjustment
Idle Adjustment Needle: 1 turn open
Main Jet Adjustment Needle: 1 turn open
Engine Low Idle RPM: 400
Engine High Idle RPM: 2200
Belt Pulley RPM @ 2000 Engine RPM: 1358
PTO RPM @ 1500 Engine RPM: 545
Compression Pressure @ Cranking Speed: Minimum 90 psi
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Sizes & Clearances
Crankshaft Jornal Diameter: 2.248-2.248 in. (57.10-57.12 mm)
Crankpin Diameter: 2.094 in. (53.18 mm)
Piston Pin Diameter: 0.7501-0.7504 in. (19.05-19.06 mm)
Valve Stem Diameter: one piece valve guide 0.341-0.342 in. (8.66 mm) / two piece valve guide 0.3105-0.3115 in. (7.89-7.91 mm)
Push Rod Diameter: 0.9995 in. (25.38 mm)
Compression Ring Width: 0.093 in. (2.36 mm)
Oil Ring Width: 0.187 in (4.75 mm)
Main Bearing Running Clearance: 0.001-0.003 in. (0.025-0.076 mm)
Rod Bearing Running Clearance: 0.001-0.0035 in. (0.025-0.089 mm)
Piston Skirt Clearance: 0.0025-0.004 in. (0.064-0.0101 mm)
Camshaft Bearing Clearance: 0.001-0.002 in. (0.025-0.050 mm)
Push Rod Running Clearance: 0.0004-0.001 in. (0.010-0.025 mm)
Crankshaft End Play: 0.002-0.006 in. (0.05-0.15 mm)
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Capacities
Cooling Systems: 3 gallons (11.3 L)
Crankcase Oil (With Filter Change: 6 Quarts (5.6 L)
Fuel Tank: standard 9 Gallons (34 L) / reserve 1 Gallon (3.8 L)Transmission, Differential, & Hydraulic System: 5 Gallons (18.9 L)
Belt Pulley Housing: 1/3 Quart (0.3 L)
