Allis Chalmers 5020

The Allis Chalmers 5020 is a tractor produced by Allis Chalmers. It is equipped with a 77.1 ci 1.3 L engine. The listed engine power is Diesel (listed): 25 hp / 18.6 kW. Transmission: 12 forward and 3 reverse. Operating weight: 308 lbs 139 kg.

Engine Power

Diesel (listed): 25 hp / 18.6 kW

Fuel & Capacities

7 gal 26.5 L

Transmission

12 forward and 3 reverse

Operating Weight

308 lbs 139 kg

Overview

	1977 - 1985 Compact Utility tractorHinomoto built Compact Utility tractor Hinomoto built

Production
Distributor	Allis Chalmers
Manufacturer	Hinomoto
Compact Utility tractor
Built in Osaka, Japan
Total built	8,500
Original price was $8,280 in 1985

Variants
9523	similar Simplicity model
E230	similar Hinomoto model

Allis Chalmers 5020 Engine
Toyosha 1.3L 2-cyl diesel
Engine details ...

Allis Chalmers 5020 Power
Engine	25 hp 18.6 kW
Drawbar (claimed)	17 hp 12.7 kW
PTO (claimed)	21 hp 15.7 kW
Plows	1 (14-inch)
Drawbar (tested)	17.37 hp 13.0 kW
PTO (tested)	21.79 hp 16.2 kW
Performance test details ...

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

Capacity
Fuel	7 gal 26.5 L
Hydraulic system	5.5 gal 20.8 L

Hydraulics
Type	open center
Capacity	5.5 gal 20.8 L
Valves	0 or 1
Pump flow	5.44 gpm 20.6 lpm

Tractor hitch
Rear Type	I

Power Take-off (PTO)
Rear PTO	transmission
	live OptOptional
Rear PTO Type	540
Engine RPM	540@2320

Dimensions & Tires
Wheelbase	59.8 inches 151 cm
Weight	1900 to 2150 pounds
Front tire	5.00-15
Rear tire	9.5-24
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	15
Battery volts	12
Battery AH	70

References

1983 Lawn and Garden Line published by Allis-Chalmers
1984 Lawn and Garden Line published by Allis-Chalmers
1985 Lawn and Garden Line published by Allis-Chalmers
5000 Series Attachments published in 1984, by Allis Chalmers
5020/5030 The Diesel Force published in 1979, by Allis Chalmers
Compact diesels enter new dimensions published in 1983, by Allis Chalmers
Operator's Manual 5020-5030 9523-9528 (2097132) published in 1978
5020 - Big appetite for small jobs. published in 1977, by Allis Chalmers

Engine

Engine Detail — 77.1 ci / 1.3 L Diesel

Manufacturer	Toyosha S126
Fuel Type	Diesel
Configuration	2-cylinder, liquid-cooled
Displacement	77.1 ci 1.3 L
Bore/Stroke	3.62x3.74 inches 92 x 95 mm
Power	25 hp 18.6 kW
Air cleaner	single paper element
Compression	23.0:1
Rated RPM	2500
Idle RPM	750-2750
Firing order	1-2
Starter	electric
Starter volts	12
Coolant capacity	5.3 qts 5.0 L
Oil capacity	5 qts 4.7 L
Oil change	100 h

Transmission

Transmission options
8-speed unsynchronized gear
12-speed unsynchronized gear

Transmission — 8 forward and 2 reverse unsynchronized gear

Type	unsynchronized gear
Gears	8 forward and 2 reverse
Clutch	215mm dry disc
Oil capacity	22 qts 20.8 L
Oil type	Power Fluid 821
Four gears, plus reverse, with high and low ranges. The eight-speed appears to only have been available during early production.
With 9.5-24 rear tires.

	Power Fluid 821

Transmission — 12 forward and 3 reverse unsynchronized gear

Type	unsynchronized gear
Gears	12 forward and 3 reverse
Clutch	215mm dry disc
Oil capacity	22 qts 20.8 L
Oil type	Power Fluid 821
Four gears, plus reverse, with high, low, and creeper ranges. The 12-speed is commonly listed as the standard transmission.
With 11.2x24 rear tires.

	Power Fluid 821

Dimensions

Allis Chalmers 5020 Tires
Ag front	5.00-15 (2WD)
	6.00x14 (4WD)
Ag rear	9.5-24
	11.2x24
Lawn/turf front	20x8.00-10
Lawn/turf rear	13.6-16

Dimensions
Wheelbase	59.8 inches 151 cm
Length	98.9 inches 251 cm
Width	48 inches 121 cm
Clearance (front axle)	12.6 inches 32 cm
Clearance (rear axle)	14 inches 35 cm
Front tread	38.6 inches 98 cm
Rear tread	39.2/51 inches 99/129 cm

Allis Chalmers 5020 Weight
2WD Shipping	1900 lbs 861 kg
4WD Shipping	2150 lbs 975 kg
Operating	2060 lbs (2WD) 934 kg
Ballasted	3358 lbs 1523 kg

Allis Chalmers 5020 Height
Steering wheel	59.8 inches 151 cm
Hood	44.7 inches 113 cm
ROPS	85 inches 215 cm
Exhaust	77.5 inches 196 cm

Tests

Nebraska Tractor Test 1270
Diesel 8-speed 2WD April 6 - 15, 1978 Link: Nebraska Tractor Test 1270 file
PTO performance
Power at rated engine speed	21.79 hp 16.2 kW
Fuel use	1.6 gal/hour 6.1 l/hour
Power at rated PTO speed	20.78 hp 15.5 kW
Fuel use	1.5 gal/hour 5.7 l/hour
Drawbar performance
Max power	17.37 hp 13.0 kW
Fuel use	1.6 gal/hour 6.1 l/hour
Gear 3H used for power test.
Max pull	2,346 lbs 1064 kg
Gear 4L used for pull test.

Attachments

Attachment overview
60" mid-mount mower deck
Front-end loader
The Allis-Chalmers was advertised as available with a 72-inch rear blade, 1-bottom (14-inch) plow, 60-inch rear mower, 50-inch tiller, and 60-inch snow thrower.

60" Mower deck
Type	mid-mount Allis Chalmers 1690373
	3-blade
Cutting width	60 inches 152 cm
Weight	308 lbs 139 kg
Overall width	71 inches 180 cm
Cut height	1.625 to 3.00 inch 4 to 7 cm

Photos

Allis-Chalmers 5020 with center-mount mower.

Allis-Chalmers 5020 operator station and controls.

Allis-Chalmers 5020 with 66 tiller.

Allis-Chalmers 5020 compact utility tractor.

Recommended Implements & Sizing Guide

Engineering recommendations for Allis Chalmers 5020 based on its 25 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
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.

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 Allis Chalmers 5020.

Estimated Continuous Field Runtime: 5.4 hrs

Approximately 5.4 hours of continuous field operation at ~75% rated power on a full tank (7 gal / 26.5 L).

Estimated 75% Load Fuel Burn~1.3 gal/hr (4.9 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