International Harvester 3688 VS Allis Chalmers D21 Series I specs comparison
International Harvester 3688
General Infos| Make | International Harvester |
| Model | 3688 |
| Country | United states |
| Production | From 1981 Until 1985 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | International Harvester 3688 Manual |
Dimensions, sizes and tires
| AG front tires | 11L-15 |
| AG rear tires | 18.4-34 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 11300 lbs or 5125 kg |
| Length | 184 inches [467 cm] |
| Width | 102 inches [259 cm] |
| Height | 112 inches [284 cm] |
| Wheelbase | 105 inches [266 cm] |
| Ground clearance | 13 inches [33 cm] |
| Turning radius | 13.5 feet [4.1 m] |
| Rear tread size | 66 to 128.5 inches |
| Front tread size | 60 to 84 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 436 ci or 7.1 L |
| Cylinders | 6 cylinders |
| Engine power | - |
| Engine RPM | 2400 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 50 gal or 189.3 L |
| Oil capacity | 14 qts or 13.2 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | International Harvester 3688 Parts |
| Batteries number | - |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | partial power shift |
| Trans gears | 16 forward and 8 reverse |
| Clutch system | cerametallic disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | power |
| Braking system | hydraulic wet disc |
| Cabin type | Cab standard with heat and A/C |
| Differentiel lock | - |
| System | closed center |
| Valves | 2 to 4 |
| Pump flow | 18 gpm or 68.1 lpm |
| SVC flow | - |
| Steering flow | 12 gpm or 45.4 lpm |
| Tank capacity | 22.5 gal or 85.2 L |
| Hydraulic pressure | - |
| Max flow | 27 gpm or 102.2 lpm |
| Drawbar type | - |
| Claimed power | 100.2 hp or 74.7 kW |
| Drawbar horsepower | 99.21 hp or 74.0 kW |
| Fuel consumption | 7.5 gal/hour or 28.4 l/hour |
| Pulling power | 12250 lbs or 5556 kg |
| Claimed power | 113 hp or 84.3 kW |
| Real power | 112.48 hp or 83.9 kW |
| Engine @RPM | 540@2100 (rpm) |
| PTO Clutch | - |
| Rear PTO | independent |
| Rear PTO RPM | 540 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Hitch system | draft sensing |
| Rear hitch | II |
| Rear hitch lift | - |
| Front hitch | - |
| Front hitch lift | - |
Allis Chalmers D21 Series I
General Infos| Make | Allis Chalmers |
| Model | D21 Series I |
| Country | United states |
| Production | From 1963 Until 1969 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | Allis Chalmers D21 Series I Manual |
Dimensions, sizes and tires
| AG front tires | 11.00x16 |
| AG rear tires | 24.5x32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 9500 lbs or 4309 kg |
| Length | 160.6 inches [407 cm] |
| Width | 91.6 inches [232 cm] |
| Height | - |
| Wheelbase | 96.1 inches [244 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 426 ci or 7.0 L |
| Cylinders | 6 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 52 gal or 196.8 L |
| Oil capacity | 12 qts or 11.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | - |
| Parts And Accessories | Allis Chalmers D21 Series I Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | 95 amps |
| Cold Amps | - |
| Ground force | negative |
| Charging system | Delco-Remy generator |
| Charging Volts | - |
| Charging Amps | 32 amps |
| Trans system | Power Director |
| Trans type | sliding gear |
| Trans gears | 8 forward and 2 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | power |
| Braking system | band actuated disc |
| Cabin type | Open operator station |
| Differentiel lock | - |
| System | - |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 93 hp or 69.4 kW |
| Drawbar horsepower | 93.09 hp or 69.4 kW |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Pulling power | 14,840 lbs or 6731 kg |
| Claimed power | 103 hp or 76.8 kW |
| Real power | 103.06 hp or 76.9 kW |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | independent |
| Rear PTO RPM | 1000 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Hitch system | - |
| Rear hitch | III/II |
| Rear hitch lift | - |
| Front hitch | - |
| Front hitch lift | - |
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Useful links and guides ....
- International Harvester provided us with the latest version of its 3688 service repair manual
- Find All mechanical and electrical parts and accessories of International Harvester 3688 farm-tractor here
- Get your Allis Chalmers D21 Series I manual book version
- Cabine, electrical And mechanical parts for Allis Chalmers D21 Series I farm-tractor here
