Allis Chalmers 5020 Tractor

Manufacturer Allis Chalmers
Price 8,280(USD)
Model 5020
Equipment Type Compact Utility Tractors
Factory Osaka, Japan

ENGINE DETAIL

The Allis Chalmers 5020 tractor, powered by the Toyosha S126 diesel engine, delivers a moderate 25 hp, making it suitable for light agricultural tasks or small farming operations. Its high compression ratio of 23.0:1 aids in efficient fuel combustion, although it may require higher quality diesel to avoid knocking. The tractor's compact design (77.1 ci displacement) and electric starting system enhance ease of use, but operators should be mindful of the limited coolant capacity (5.3 qts), which may necessitate more frequent monitoring in warmer conditions.

Description Toyosha S126 diesel 2-cylinder liquid-cooled
Displacemen 77.1ci / 1.3L
Bore/Strok 3.62x3.74inches / 92x 95 mm
Powe 25hp / 18.6kW
Air cleane single paper element
Compressio 23.0:1
Rated RP 2500
Idle RP 750-2750
Firing orde 1-2
Starte electric
Starter volt 12
Coolant capacit 5.3qts / 5.0L

ENGINE OIL

The Allis Chalmers 5020 tractor has an oil capacity of 5 quarts (4.7 liters) and a recommended oil change interval of 100 operating hours. This relatively low oil capacity can simplify maintenance but necessitates more frequent changes, which could increase operational costs over time. Ensure timely oil changes to maintain engine performance and longevity, especially in intensive use scenarios.

Oil capacit 5 qts/4.7 L
Oil chang 100 h

ALLIS CHALMERS 5020 ENGINE

The Allis Chalmers 5020 is powered by a Toyosha 1.3L 2-cylinder diesel engine, which delivers commendable fuel efficiency ideal for lighter agricultural tasks. Its compact size makes it maneuverable in tight spaces, but the reduced horsepower may limit performance with larger implements. Consider using this tractor for small-scale farming, gardening, or landscaping where agility and economy are prioritized over brute power.

Description Toyosha 1.3L 2-cyl diesel

TRANSMISSIONS OVERVIEW

The Allis Chalmers 5020 features an 8-speed unsynchronized transmission, which offers adequate simplicity for most agricultural applications, but can lead to challenges in smooth shifting under load. The optional 12-speed unsynchronized gear enhances versatility, allowing for improved speed selection in varying field conditions, though it may require more operator skill to effectively manage gear transitions. Operators should consider the terrain and workload when choosing between the two options, as more speeds can improve performance but may also complicate operation.

Description 8-speed unsynchronized gear 12-speed unsynchronized gear

TRANSMISSION 1

The Allis Chalmers 5020 features an unsynchronized transmission which may pose challenges during gear shifts, requiring skillful operation to avoid potential damage. Its 8 forward and 2 reverse gears, while offering versatility for various tasks, are limited by the early production offering of this gearbox configuration. The dry disc clutch and moderate oil capacity (22 quarts) provide adequate performance for lighter agricultural tasks, but may necessitate more frequent maintenance compared to modern hydraulic systems, particularly in demanding conditions.

Typ unsynchronized gear
Gear 8 forward and 2 reverse
Clutc 215mm dry disc
Oil capacit 22qts / 20.8L
Description Four gears, plus reverse, with high and low ranges. The eight-speed appears to only have been available during early production.

SPEEDS 1

Description With 9.5-24 rear tires

TRANSMISSION 2

The Allis Chalmers 5020 tractor features a 12-speed unsynchronized gear transmission, providing versatility for various field operations. The inclusion of high, low, and creeper ranges enhances its capability for both fast transport and precision tasks. However, the unsynchronized gearing may challenge operators during shifting, particularly under load, making it essential to practice proper shifting techniques to avoid damaging the drivetrain.

Typ unsynchronized gear
Gear 12 forward and 3 reverse
Clutc 215mm dry disc
Oil capacit 22qts / 20.8L
Description Four gears, plus reverse, with high, low, and creeper ranges. The 12-speed is commonly listed as the standard transmission.

SPEEDS 2

Description With 11.2x24 rear tires

ALLIS CHALMERS 5020 TRANSMISSIONS

The Allis Chalmers 5020 features an 8-speed unsynchronized gear system, allowing for basic efficiency in power transmission, ideal for tasks requiring consistent speed. The optional 12-speed unsynchronized gear enhances operational flexibility, enabling smoother transitions between speeds, which can improve performance in varied agricultural applications. However, unsynchronized gears may present challenges in shifting, particularly under load, necessitating skilled operation to prevent gear grinding.

Description 8-speed unsynchronized gear 12-speed unsynchronized gear

MECHANICAL

The Allis Chalmers 5020 tractor features a manual steering system, emphasizing simplicity and lower maintenance costs, but may lack the maneuverability of power steering systems, particularly in tight spaces. Its mechanical drum and shoe brakes provide reliable stopping power, though they may require more frequent adjustments compared to modern hydraulic systems. With optional ROPS (Roll Over Protective Structure) canopies, safety in hilly or uneven terrains is significantly enhanced, making this tractor suitable for both agricultural and landscaping applications.

Description Two- or four-wheel drive Manual steering Differential mechanical drum and shoe brakes Two-post ROPS, optional ROPS canopy

CAPACITY

Fue 7 gal/26.5 L
Hydraulic syste 5.5gal / 20.8L

HYDRAULICS

Typ open center
Capacit 5.5gal / 20.8L
Valve 0 or 1
Pump flo 5.44gpm / 20.6lpm

TRACTOR HITCH

Rear Typ I

POWER TAKE-OFF (PTO)

Rear PT transmission live OptOptional
Rear RP 540
Engine RP 540@2320

ALLIS CHALMERS 5020 TIRES

The Allis Chalmers 5020 tractor features versatile tire configurations for both agricultural (2WD and 4WD) and lawn/turf applications, providing adaptability to various terrains and farming tasks. The rear tire options (9.5-24 or 11.2x24) enhance traction, making it suitable for fieldwork, while the lawn/turf specifications (20x8.00-10 front, 13.6-16 rear) allow for efficient maintenance in residential settings. Users should weigh the trade-offs between 2WD and 4WD options based on traction needs and ground conditions, with 4WD offering improved stability in muddy or sloped terrains.

Ag fron 5.00-15 (2WD)/6.00x14 (4WD)
Ag rea 9.5-24/11.2x24
Lawn/turf fron 20x8.00-10
Lawn/turf rea 13.6-16

DIMENSIONS & TIRES

The Allis Chalmers 5020 tractor features a compact 59.8-inch wheelbase, making it suitable for agile maneuvering in tight spaces such as small farms or gardens. Weighing between 1900 and 2150 pounds, it offers a moderate balance of stability and transportability, though its lighter weight may limit performance in heavy-duty applications. The front tires (5.00-15) are smaller, which can enhance nimbleness, while the larger rear tires (9.5-24) provide better traction for pulling implements.

Wheelbas 59.8inches / 151cm
Weigh 1900 to 2150 pounds
Front tir 5.00-15
Rear tir 9.5-24

5020 SERIAL NUMBERS

197 3091
198 9217

5020 SERIAL LOCATION

Description Serial number plate under steering wheel, ahead of the gear shift lever

ELECTRICAL

Groun negative
Charging syste alternator
Charging amp 15
Battery volt 12
Battery A 70


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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