Century 3638
The Century 3638 is a tractor produced by Century. It is equipped with a 110 ci 1.8 L engine. The listed engine power is Diesel (listed): 38 hp / 28.3 kW. Transmission: 12 forward and reverse. Operating weight: 3,770 lbs 1710 kg.
Engine Power
Diesel (listed): 38 hp / 28.3 kW
Fuel & Capacities
11.1 gal
42.0 L
Transmission
12 forward and reverse
Operating Weight
3,770 lbs
1710 kg
Overview
 | Compact Utility tractorKukje built |
|---|---|
Compact Utility tractor | |
Kukje built | |
Compact Utility tractor | |
|---|---|
Kukje built |
Production | |
|---|---|
Distributor | Century |
Manufacturer | Kukje |
Compact Utility tractor | |
Built in Yangsu-ri, South Korea | |
Century 3638 Engine | |
|---|---|
Kukje 1.8L 4-cyl diesel | |
Engine details ...  |
Century 3638 Transmission | |
|---|---|
12-speed partially synchronized | |
Transmission details ...  |
Century 3638 Power | |
|---|---|
Engine | 38 hp
28.3 kW |
PTO (claimed) | 32 hp
23.9 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | foot pedal |
Steering | hydrostatic power |
Differential wet disc brakes | |
ROPS. | |
Capacity | |
|---|---|
Fuel | 11.1 gal
42.0 L |
Hydraulic system | 9.25 gal
35.0 L |
Front axle | 7.4 qts
7.0 L |
Hydraulics | |
|---|---|
Type | open center |
Capacity | 9.25 gal
35.0 L |
Valves | 1 to 3 |
Pump flow | 8.9 gpm
33.7 lpm |
Total flow | 13.2 gpm
50.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Rear lift (at ends) | 2,580 lbs
1170 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | live (2-stage clutch) |
Rear PTO Type | 540/1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 69 inches
175 cm |
Weight | 3,770 lbs
1710 kg |
Front tire | 8-18 |
Rear tire | 12.4-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging amps | 45 |
Battery volts | 12 |
References | |
|---|---|
 | |
Operator's Manual 2629, 2635, 3638, 3642 and 3647 (948892) published in 2003 |
Engine
| Compact Utility tractorKukje built |
|---|---|
Compact Utility tractor | |
Kukje built | |
Compact Utility tractor | |
|---|---|
Kukje built |
Engine Detail — 110 ci / 1.8 L Diesel
Manufacturer | Kukje |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 110 ci
1.8 L |
Bore/Stroke | 3.307x3.701 inches
84 x 94 mm |
Power | 38 hp
28.3 kW |
Air cleaner | dry element |
Compression | 22.2:1 |
Rated RPM | 2600 |
Starter volts | 12 |
Coolant capacity | 9.8 qts
9.3 L |
Oil capacity | 6.4 qts
6.1 L |
Transmission
| Compact Utility tractorKukje built |
|---|---|
Compact Utility tractor | |
Kukje built | |
Compact Utility tractor | |
|---|---|
Kukje built |
Transmission — 12 forward and reverse partially synchronized
Type | partially synchronized | ||||
Gears | 12 forward and reverse | ||||
Oil capacity | 37 qts
35.0 L | ||||
Oil type | 10oF [-12oC]↑ : JDM J20C 70o↔-40oF [21o↔-40oC] : JDM J20D | 10oF [-12oC]↑ | : JDM J20C | 70o↔-40oF [21o↔-40oC] | : JDM J20D |
10oF [-12oC]↑ | : JDM J20C | ||||
70o↔-40oF [21o↔-40oC] | : JDM J20D | ||||
Four gears in three ranges with left-hand shuttle. Gear shift is synchronized with clutch. Tractor must be stopped to shift range and shuttle. | |||||
With 12.4-28 rear tires. | |||||
 | |||||
10oF [-12oC]↑ | : JDM J20C |
|---|---|
70o↔-40oF [21o↔-40oC] | : JDM J20D |
Dimensions
| Compact Utility tractorKukje built |
|---|---|
Compact Utility tractor | |
Kukje built | |
Compact Utility tractor | |
|---|---|
Kukje built |
Century 3638 Tires | |
|---|---|
Ag front | 8-18 |
Ag rear | 12.4-28 |
Lawn/turf front | 29x12.00-15 |
Lawn/turf rear | 44x18.00-20 |
Industrial front | 12-16.5 |
Industrial rear | 17.5L-24 |
Dimensions | |
|---|---|
Wheelbase | 69 inches
175 cm |
Length | 124 inches
314 cm |
Width | 61 inches
154 cm |
Height | 96 inches
243 cm |
Weight | 3,770 lbs
1710 kg |
Ground clearance | 13 inches
33 cm |
Front tread | 50 inches
127 cm |
Rear tread | 45 to 59 inches
114 to 149 cm |
Attachments
| Compact Utility tractorKukje built |
|---|---|
Compact Utility tractor | |
Kukje built | |
Compact Utility tractor | |
|---|---|
Kukje built |
Attachment overview | |
|---|---|
Century 50 loader | |
Century 50HL loader |
Recommended Implements & Sizing Guide
Engineering recommendations for Century 3638 based on its 38 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Century 3638.
Estimated Continuous Field Runtime: 5.6 hrs
Approximately 5.6 hours of continuous field operation at ~75% rated power on a full tank (11.1 gal / 42 L).
Estimated 75% Load Fuel Burn~2 gal/hr (7.5 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Century 3638 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Century 3638.
Converted Equivalents:
Horsepower (HP)38 hp
Kilowatts (kW)28.3 kW
Metric Horsepower (PS / CV)38.5 PS
Direct Competitor Comparison
Compare Century 3638 against same-era industry alternatives in the same horsepower class.
Current Model
Century
Century 3638
Engine Power:Diesel (listed): 38 hp / 28.3 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester TD-6
Engine Power:34.4
Production Years:1940 - 1969
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