Chamberlain 306
The Chamberlain 306 is a tractor produced by Chamberlain. It is equipped with a 306 ci 5.0 L engine. The listed engine power is Diesel (listed): 70 hp / 52.2 kW. Transmission: 9 forward and 3 reverse. Operating weight: 7800 lbs 3538 kg.
Engine Power
Diesel (listed): 70 hp / 52.2 kW
Fuel & Capacities
28.8 gal
109.0 L
Transmission
9 forward and 3 reverse
Operating Weight
7800 lbs
3538 kg
Overview
 | 1966 - 1969
Champion SeriesStandard-tread tractor
Champion Series
Standard-tread tractor |
|---|
Production | |
|---|---|
Manufacturer | Chamberlain |
Standard-tread tractor | |
Built in Welshpool, Australia | |
Chamberlain 306 Engine | |
|---|---|
Perkins 5.0L 6-cyl diesel | |
Fuel tank | 28.8 gal
109.0 L |
Engine details ...  | |
Chamberlain 306 Transmission | |
|---|---|
9-speed gear | |
Transmission details ...  |
Chamberlain 306 Power | |
|---|---|
Engine | 70 hp
52.2 kW |
PTO (claimed) | 58 hp
43.3 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. Cab optional. |
Tractor hitch | |
|---|---|
Rear Type | II (optional) |
Power Take-off (PTO) | |
|---|---|
Rear PTO | live |
Rear PTO Type | 540 (1.375) |
Engine RPM | 540@1600 |
Dimensions & Tires | |
|---|---|
Weight | 7800 lbs
3538 kg |
Front tire | 7.50x18 |
Rear tire | 18.4x30 |
Full dimensions and tires ...  | |
Belt Pulley | |
|---|---|
Diameter | 10.25 inches
26 cm |
Width | 6.25 inches
15 cm |
RPM | 1600 |
Speed | 3100 ft/min
944.88 meters/min |
Engine
Engine Detail — 306 ci / 5.0 L Diesel
Manufacturer | Perkins 6.306 |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 306 ci
5.0 L |
Bore/Stroke | 3.60x5.00 inches
91 x 127 mm |
Power | 70 hp
52.2 kW |
Fuel system | direct injection |
Pre-heating | thermostart |
Rated RPM | 2000 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — 9 forward and 3 reverse gear
Type | gear |
Gears | 9 forward and 3 reverse |
Clutch | 355.6mm dry disc |
Three gears (1-3), plus reverse (R) in three ranges (low, intermediate, high). | |
With 18.4x30 rear tires. | |
 | |
Dimensions
Chamberlain 306 Tires | |
|---|---|
Ag front | 7.50x18 |
Ag rear | 18.4x30 |
Dimensions | |
|---|---|
Weight | 7800 lbs
3538 kg |
Clearance (front axle) | 17.5 inches
44 cm |
Photos
Chamberlain Champion 306, right side.
Chamberlain Champion 306, left side.
Recommended Implements & Sizing Guide
Engineering recommendations for Chamberlain 306 based on its 70 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
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 Chamberlain 306.
Estimated Continuous Field Runtime: 7.9 hrs
Approximately 7.9 hours of continuous field operation at ~75% rated power on a full tank (28.8 gal / 109 L).
Estimated 75% Load Fuel Burn~3.6 gal/hr (13.8 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
Chamberlain 306 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Chamberlain 306.
Converted Equivalents:
Horsepower (HP)70 hp
Kilowatts (kW)52.2 kW
Metric Horsepower (PS / CV)71 PS
Direct Competitor Comparison
Compare Chamberlain 306 against same-era industry alternatives in the same horsepower class.
Current Model
Chamberlain
Chamberlain 306
Engine Power:Diesel (listed): 70 hp / 52.2 kW
★ Baseline Reference
Related models
Chamberlain C456
- Power:
- 56
- Production years:
- 1973 - 1983
Chamberlain Champion 6G
- Power:
- 57.8
- Production years:
- 1955 - 1957
Chamberlain 55DA
- Power:
- 60.7
- Production years:
- 1954 - 1957
Chamberlain Canelander
- Power:
- 62
- Production years:
- 1959 - 1973
Chamberlain Champion 9G
- Power:
- 62
- Production years:
- 1958 - 1966