Old Ford Tractor '39-'64
Misc Specifications and Data
By: John Smith of Old Ford Tractors
Old Ford Tractor '39 - '64 Misc Specifications and Data
Spec | 8N | NAA | 600 | 800 | 700 | 900 |
---|---|---|---|---|---|---|
WheelBase | 70" | 73.875" | 75.2" | 75.2" | 85.3" | 85.3" |
Overall Length | 115" | 118.875" | 121.4" | 121.8" | 132" | 132.4" |
Overall Width | 64.75" | 64.75" | 64.75" | 64.75" | 71.7" | 71.7" |
Front Tread Width | 48"-76" | 48"-76" | 52"-76" | 52"-76" | 8.3"-16.3" | 8.3"-16.3" |
Rear Tread Width | 48"-76" | 48"-76" | 52"-76" | 52"-76" | 56"-84" | 56"-84" |
Ground Clearance | 21" | 21" | 21" | 21" | 27.2" | 27.9" |
Approx Shipping Weight | 2410# | 2550# | 2750# | 2850# | 3100# | 3184# |
Engine Type | 4 cyl. "L" head | 4 cyl. OHV | 4 cyl. OHV | 4 cyl. OHV | 4 cyl. OHV | 4 cyl. OHV |
Bore | 3.188" | 3.4375" | 3.4375" | 3.90" | 3.44" | 3.90" |
Stroke | 3.75" | 3.60" | 3.60" | 3.60" | 3.60" | 3.60" |
Displacement | 119.7 ci. | 134 ci. | 134 ci. | 172 ci. | 134 ci | 172 ci. |
Compression Ratio | 6.50:1 | 6.60:1 | 6.60:1 | 6.75:1 | 6.60:1 | 6.75:1 |
Firing Order | 1-2-4-3 | 1-2-4-3 | 1-2-4-3 | 1-2-4-3 | 1-2-4-3 | 1-2-4-3 |
Idle Speed | 400 RPM | 450-475 RPM | 450-475 RPM | 450-475 RPM | 450-475 RPM | 450-475 RPM |
Maximum RPM (no load) | 2000 RPM | 2000 RPM | 2200 RPM | 2400 RPM | 2200 RPM | 2400 RPM |
Sleeves | Cast Alloy Iron | Cast Alloy Iron | Cast Iron | Cast Iron | Cast Iron | Cast Iron |
Pistons | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy |
Cooling System Type | Pressure | Pressure | Pressure | Pressure | Pressure | Pressure |
Fan | Four or Six Blade | Four or Six Blade | Three Blade | Three Blade | Three Blade | Three Blade |
Initial Timing @ 475 rpm | 4º BTDC¹ | 8º BTDC | 8º BTDC | 5º BTDC | 8º BTDC | 5º BTDC |
Advance @ 2000 RPM | 18º2² | 29º to 31º | 29º to 31º | 26º to 28º | 29º to 31º | 26º to 28º |
Point Gap | .0153³ | .024 to .026 | .024 to .026 | .024 to .026 | .024 to .026 | .024 to .026 |
Spark Plug size | 14MM | 14MM | 14MM | 14MM | 14MM | 14MM |
Spark Plug Gap | .025 to .028 | .025 to .028 | .025 to .028 | .025 to .028 | .025 to .028 | .025 to .028 |
Generator Type | Two Brush, shunt wound | Two Brush, shunt wound | Two Brush, shunt wound | Two Brush, shunt wound | Two Brush, shunt wound | Two Brush, shunt wound |
Generator Capacity | 20 amps, 140w | 20 amps, 160w | 20 amps, 140w | 20 amps, 140w | 20 amps, 140w | 20 amps, 140w |
Battery | 6 volt positive ground | 6 volt positive ground | 6 volt positive ground | 6 volt positive ground | 6 volt positive ground | 6 volt positive ground |
1 - 9N, 2N, 8N prior to serial number 263844..... 0º TDC
2 - 9N, 2N, 8N prior to serial number 263844..... 25º BTDC.
3 - 8N side distributor after serial number 263843......025".
Capacities
Model or Series | 9N | 2N | 8N | NAA | 600 | 700 | 800 | 900 | 501 | 601 | 701 | 801 | 901 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fuel Capacity | 10 gallons | 10 gallons | 10 gallons | 11 gallons | 11 gallons | 11 gallons | 14 gallons | 14 gallons | 13 gallons | 13 gallons | 17 gallons | 17 gallons | |
Cooling System | 12 quarts | 12 quarts | 12 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts | 15 quarts |
Crankcase Capacity | 6 quarts | 6 quarts | 6 quarts | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) | 5 quarts (with filter change) |
Transmission Capacity- 4 speed | 5 Gallons¹ | 5 Gallons¹ | 5 Gallons¹ | 5 q | 5 q | 6.5 q | 5 q | 6.5 q | 6.5 q | 6.5 q | 6.5 q | 6.5 q | 6.5 q |
Transmission Capacity- 5 speed | 8 q | 8 q | 8 q | 8.5 q | 8.5 q | 8.5 q | 8.5 q | 8.5 q | 8.5 q | ||||
Differential Capacity | See note 1 | See note 1 | See note 1 | 8.5 q | 8.5 q | 8 q | 11.5 q | 8 q | 8 q | 8 q | 8 q | 11.5 q | 8 q |
Hydraulic System Capacity | See note 1 | See note 1 | See note 1 | 8 q | 9 q | 8 q | 9 q | 8 q | 8 q | 8 q | 8 q | 8 q | 8 q |
Steering Assembly Capacity | N/A | N/A | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. | 1 pt. |
Air Filter Oil Cup Capacity | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints | approximately 1.3 pints |
Oil Pump GPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM | approximately 3.4 GPM @ 1400 RPM |
Water Pump GPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM | approximately 16 GPM @ 1400 RPM |
Thermostat | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º | open @ 160º- open @ 180º |
Pressure Cap | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi | relief valve opens @ .5 to 1.0 psi - pressure valve opens @ 3.5 to 4.5 psi |
Note 1 - 9N, 2N, and 8N has a common sump for the hydraulic oil which also provides lubrication to the transmission and differential.
NAA and Hundred series tractors have separate reservoirs for transmission lubricant, hydraulic fluid, and differential lubricant.
Clearances
Model or Series | 9N | 2N | 8N | NAA | 600 | 700 | 800 | 900 | 501 | 601 | 701 | 801 | 901 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2.248" - 2.249" | 2.248" - 2.249" | 2.248" - 2.249" | 2.248" - 2.249" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" | 2.4974" - 2.4988" |
Crankshaft End Play | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 |
Crankpin Diameter | 2.094" | 2.094" | 2.094" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" | 2.2978" - 2.2988" |
Main Bearing Clearance | .001 - .003 | .001 - .003 | .001 - .003 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 | .0007 - .0023 |
Connecting Rod Bearing Clearance | .001 - .0035 | .001 - .0035 | .001 - .0035 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 | .002 - .0004 |
Connecting Rod Side Clearance | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | .003 - .009 | |||
Piston Pin Diameter | .7501 - .7504 | .7501 - .7504 | .7501 - .7504 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 | .9121 - .9123 |
Piston Pin Length | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | 2.837" - 2.092" | |||
Pin Clearance in Rod and Piston | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | .0001 - .0003 | |||
Connecting Rod Bushing I.D. | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | .9122 - .9125 | |||
Fitting New Piston in New Bore | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 | .0015 |
Fitting Used Piston in New Bore | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 |
Fitting Used Piston in Used Bore | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 | .003 |
Piston Ring Side Clearance- top ring | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | .002 - .0035 | |||
Piston Ring Side Clearance- second ring | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | .0015 - .003 (134cid) .002 - .0035 (172 cid) | |||
Piston Ring Side Clearance- oil ring | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | .0015 - .003 (134 cid) .002 - .0035 (172 cid) | |||
Camshaft Bearing Clearance | .001 - .002 | .001 - .002 | .001 - .002 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 | .0015 - 0.0035 |
Camshaft Journal Diameter | 1.797" | 1.797" | 1.797" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" | 1.925" - 1.926" |
Camshaft Gear Lash | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | .002 - .006 | |||
Camshaft End Play | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | .003 - .007 | |||
Camshaft Block Bore Diameter | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | 1.9275" - 1.9285" | |||
Rocker Arm Support Journal Diameter | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | .780 - .781 | |||
Rocker Arm Running Clearance | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | |||
Valve Face Angle | 46º | 46º | 46º | 46º | 46º | 46º | 46º 46º | 46º | 46º | 46º | |||
Valve Seat Angle | 45º | 45º | 45º | 45º | 45º | 45º | 45º | 45º | 45º | 45º | |||
Valve Seat Runout | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | .002 | |||
Valve Seat Width- intake | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | .060 - .080 | |||
Valve Seat Width- exhaust | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | .090 - .110 | |||
Valve Lash | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | .014 - .016 | |||
Valve Cap-to-Stem End Clearance | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | .002 - .004 | |||
Valve Guide Inside Diameter | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | .3436 - .3444 | |||
Valve Stem-to-Guide Clearance | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | |||
Valve Stem Diameter- intake/red | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 | .3418 |
Valve Stem Diameter- intake/green | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 | .3423 |
Valve Stem Diameter- exhaust/red | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 | .3408 |
Valve Stem Diameter- exhaust/green | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 | .3413 |
Valve Timing- Intake Opens @ | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | 15º before T.D.C | |||
Valve Timing- Intake Closes @ | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | 35º after B.D.C | |||
Valve Timing- Exhaust Opens @ | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | 41º before B.D.C | |||
Valve Timing- Exhaust Closes @ | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | 15º after T.D.C | |||
Valve Lift- Intake | .3553 | .3553 | .3553 | .3553 | .3553 | .3553 | .3553 | .3553 | .3553 | .3553 | |||
Valve Lift- Exhaust | .3370 | .3370 | .3370 | .3370 | .3370 | .3370 | .3370 | .3370 .3370 | .3370 | .3370 | |||
Valve Rotators- exhaust | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin | Free spin |
Valve Tappet Diameter | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | .4989 - .4995 | |||
Valve Tappet Bore Clearance | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | .0005 - .0021 | |||
Oil Pump Drive Shaft-to-Body Clearance | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | .0015 - .0029 | |||
Oil Pump Driven Gear-to-Pin Clearance | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | .001 - .002 | |||
Oil Pump Gear-to-Pump Body Side Clear. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. | .005 max. |
Original Wheels and Tires
Model or Series | Front Tire | Rear Tire |
---|---|---|
9N | 4x19 | 10x28 |
2N | 4x19 | 10x28 |
8N¹ | 4.00x19 | 10x28 |
NAA² | 4.00x19 | 10x28 |
600 Series | 5.50x16 | 11x28 |
601 All Purpose Model | 5.50x16 | 11x28 |
601 Special Utility Model | 5.50x16 | 10x28 |
621 Special Utility Model | 5.50x16 | 10x28 |
631 Special Utility Model | 5.50x16 | 10x28 |
641 Special Utility Model | 5.50x16 | 10x28 |
651 Special Utility Model | 5.50x16 | 10x28 |
661 Special Utility Model | 5.50x16 | 10x28 |
700 Series | 5.50x16 | 11x28 |
701 | 5.50x16 | 11x28 |
741 | 5.50x16 | 11x28 |
771 | 5.50x16 | 11x28 |
800 Series | 6.00x16 | 12x28 |
801 All Purpose Model | 6.00x16 | 12x28 |
801 Special Utility Model | 5.50x16 | 10x28 |
811 Special Utility Model | 5.50x16 | 10x28 |
821 Special Utility Model | 5.50x16 | 10x28 |
900 Series | 5.50x16 | 11x28 |
901 Series | 5.50x16 | 12x28 |
1- 5.50x16 front tires optional
2- 5.50x16 front and 11x28 rear optional.
Tire Inflation Chart
Tire Size/Position | Inflation Pressure | Max Lbs. Load Per Wheel |
---|---|---|
10.00x28 4-ply rear | 16 psi | 1860 |
10.00x38 4-ply rear | 16 psi | 2155 |
11.00x28 4-ply rear | 14 psi | 2070 |
12.00x28 4-ply rear | 14 psi | 2430 |
12.00x38 4-ply rear | 14 psi | 2420 |
12.40x28 4-ply rear | 14 psi | 2070 |
13.00x24 4-ply rear | 14 psi | 2470 |
13.60x28 4-ply rear | 14 psi | 2430 |
14.00x24 4-ply rear | 16 psi | 3560 |
14.90x24 4-ply rear | 18 psi | 3125 |
14.90x28 4-ply rear | 14 psi | 2630 |
5.50x16 4-ply front | 28 psi | 1060 |
6.00x16 4-ply front | 20 psi | 755 |
6.50x16 6-ply front | 28 psi | 1050 |
7.50x16 8-ply front | 44 psi | 2390 |
9.00x16 8-ply front | 49 psi | 1620 |
Liquid Weight Chart
Tire Size | Gals of Water | Lbs. of Calcium Chloride | Total Weight Added |
---|---|---|---|
9:00 x 10 front | 9 | 45 | 120 |
5:50 x 16 front | 4.5 | 22.5 | 60 |
6:00 x 16 front | 5.2 | 26 | 69 |
6:50 x 16 front | 5.9 | 29.5 | 79 |
7:50 x 16 front | 9 | 45 | 120 |
10:00 x 28 rear | 24 | 122 | 324 |
10:00 x 38 rear | 31 | 157 | 416 |
11:00 x 28 rear | 32 | 160 | 426 |
12:00 x 28 rear | 39 | 197 | 525 |
12:00 x 38 rear | 51 | 257 | 685 |
13:00 x 24 rear | 44 | 219 | 584 |
13:00 x 28 rear | 49 | 246 | 648 |
13:60 x 28 rear | 39 | 197 | 525 |
14.90 x 24 rear | 44 | 219 | 584 |
14:90 x 28 rear | 49 | 246 | 648 |
Torque Specifications '53 - '64
Engine
Header | Header 2 |
---|---|
Camshaft Thrust Plate to Cylinder Block | 10-16 ft.lbs. |
Camshaft Gear to Camshaft | 45-50 ft.lbs. |
Carb Throttle Body to Fuel Bowl | 36 in.lbs. |
Connecting Rod Nuts | 45-50 ft.lbs. |
Connecting Rod Pal Nuts | 3-4 ft.lbs. |
Crankshaft Pulley to Crankshaft | 100-110 ft.lbs. |
Cylinder Front Cover | 15-18 ft.lbs. |
Cylinder Head Bolts | 65-70 ft.lbs. |
Flywheel to Crankshaft | 75-85 ft.lbs. |
Hydraulic Pump Gear Cover to Cylinder Block | 18-21 ft.lbs. |
Main Bearing Cap Bolts | 95-105 ft.lbs. |
Manifolds to Cylinder Block | 40-50 ft.lbs. |
Governor Cylinder Front Cover | 15-18 ft.lbs. |
Camshaft Thrust Plate to Cylinder Block | 10-16 ft.lbs. |
Header | Header 2 |
---|---|
Oil Pan to Cylinder Block | 15-18 ft.lbs. |
Oil Filter to Cylinder Block | 20-25 ft.lbs. |
Oil Pump to Cylinder Block | 30-35 ft.lbs. |
Oil Tubes to Oil Pump Cover Plate | 10-15 ft.lbs. |
Rocker Arm Shaft Bolts | 45-50 ft.lbs. |
Spark Plugs | 24-30 ft.lbs. |
Valve Push Rod Chamber Cover | 20-30 in.lbs. |
Valve Rocker Arm Cover | 8-10 ft.lbs. |
Valve Rocker Arm Support to Cylinder Head | 45-50 ft.lbs. |
Water Outlet Elbow | 8-10 ft.lbs. |
Water Pump to Cylinder Block | 15-18 ft.lbs. |
Throttle Body to Fuel Bowl | 36 in.lbs. |
Governor Case to Front Cover | 6-10 ft.lbs. |
Transmission
Header 1 | Header 2 |
---|---|
Engine Adapter Plate Nuts | 25-30 ft.lbs. |
Distributor Attaching Bolts | 20-30 ft.lbs. |
Interlock Cover Attaching Bolts | 35-40 ft.lbs. |
Lever Pin Retaining Bolt | 90-110 ft.lbs. |
P.T.O. Bearing Retainer Nuts | 12-15 ft.lbs. |
P.T.O. Hydraulic Fluid Line Fitting to Distributor | 10-12 ft.lbs. |
Pump Mounting Bolts | 15-18 ft.lbs. |
Header 1 | Header 2 |
---|---|
Rear Support Mounting Bolts | 35-40 ft.lbs. |
Servo #1 Cover Attaching Bolt | 20-25 ft.lbs. |
Servo Actuating Lever Pin Nuts | 100-120 ft.lbs. |
Torque Limiting Clutch Mounting Bolts | 25-30 ft.lbs. |
Transmission Cover Attaching Bolts | 18-23 ft.lbs. |
Valve Body Mounting Bolts | 5-8 ft.lbs. |
Front Axle
Header 1 | Header 2 |
---|---|
Axle Half to Center Axle Nut | 135-150 ft.lbs. |
Center Axle Pin | 200 ft.lbs. |
Radius Rod to Center Axle Nut | 75-135 ft.lbs. |
Radius Rod to Transmission Housing Nut | 45-50 ft.lbs. |
Spindle Arm to Spindle Nut | 60-70 ft.lbs. |
Support to Engine Nut | 135-150 ft.lbs. |
Rear Axle
Header 1 | Header 2 |
---|---|
Axle Shaft Retainer or Final Drive Nuts | 130-150 ft.lbs. |
Axle to Center Housing Nuts | 55-65 ft.lbs. |
Axle to Center Housing Studs | 40-45 ft.lbs. |
Center Housing to Transmission Housing | 40-50 ft.lbs. |
Differential Case | 90-100 ft.lbs. |
Drive Gear Bolts | 90-110 ft.lbs. |
Thrust Block Bolts | 25-30 ft.lbs. |
Header 1 | Header 2 |
---|---|
Lower Link Shaft Nut (inside) | 150 ft.lbs. |
P.T.O. Shifter Plate | 40-55 ft.lbs. |
Pinion Retainer Bolts | 80-100 ft.lbs. |
Relief Valve Plate Bolts | 35-45 ft.lbs. |
Wheel Lug Nuts | 80 ft.lbs. |
Axle Nut | 450 ft.lbs. |
Power Take-Off
Heading 1 | Heading 2 |
---|---|
Belt Pulley Assembly to Center Housing Bolts | 35-40 ft.lbs. |
Conversion to Center Housing Bolts | 40-50 ft.lbs. |
P.T.O. Conversion Cover Bolts | 40-50 ft.lbs. |
Heading 1 | Heading 2 |
---|---|
P.T.O. Cover Bolts | 35-40 ft.lbs. |
Shift Cover Nuts | 45 ft.lbs. |
Shift Lever Studs | 40-45 ft.lbs. |
Steering
Heading 1 | Heading 2 |
---|---|
Adapter to Steering Gear Housing | 20-25 ft.lbs. |
Sector Shaft Cover Bolts | 25-30 ft.lbs. |
Heading 1 | Heading 2 |
---|---|
Steering Gear Housing to Transmission Housing | 60-70 ft.lbs. |
Steering Shaft Cover Retaining Screws | 25-30 ft.lbs. |
Old Ford Tractor PTO Horsepower Ratings
Model | PTO Speed at Engine RPM | Horsepower |
---|---|---|
9N | 727 @ 2000 | 23.6 |
8N ('47-'48) | 727 @ 2000 | 23.6 |
8N ('49-'52) | 727 @ 2000 | 26.2 |
Jubilee/NAA | 727 @ 2000 | 31.1 |
640- Gas | 727 @ 2000 | 31.0 |
640- LP | 727 @ 2000 | 28.4 |
660- Gas | 685 @ 2000 | 34.2 |
740- Gas | 727 @ 2000 | 31.6 |
850- LP | 685 @ 2000 | 39.5 |
860- Gas | 685 @ 2000 | 45.4 |
960- Gas | 685 @ 2000 | 46.3 |
621, 631, 641, 741- Gas | 727 @ 2000 | 33.6 |
651, 661- Gas | 685 @ 2000 | 35.8 |
821, 841, 941- Gas | 727 @ 2000 | 44.7 |
851, 861, 951, 961- Gas | 685 @ 2000 | 48.4 |
541D, 641D, 741D- Diesel | 727 @ 2000 | 31.8 |
821D, 841D, 941D- Diesel | 727 @ 2000 | 39.9 |
851D, 861D, 951D, 961D- Diesel | 685 @ 2000 | 42.0 |
841L- LP | 727 @ 2000 | 42.0 |
Select-O-Speed 671, 681, 771- Gas | 693 @ 2000 | 34.3 |
Select-O-Speed 671, 681, 771- Diesel | 693 @ 2000 | 31.6 |
Select-O-Speed 671, 681, 771- LP | 693 @ 2000 | 32.6 |
Select-O-Speed 871, 971- Gas | 693 @ 2000 | 46.2 |
Select-O-Speed 871, 881, 971, 981-Diesel | 693 @ 2000 | 41.4 |
Select-O-Speed 871, 881, 971, 981- LP | 693 @ 2000 | 43.6 |
Thanks to John Smith of Old Ford Tractor for allowing us to use this information.