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Allis Chalmers 620 Technical Data

Allis Chalmers 620 Engine

Engine Model .................... Onan CCKB
Engine Type .................... 4-cycle, 2-cylinder gasoline
Number of Cylinders .................... 2
Displacement, cu in (L) .................... 49.8 (0.816)
Engine Bore, in (mm) .................... 3.25 (83.0)
Engine Stroke, in (mm) .................... 3.00 (76.0)
Rated Engine Power, hp (kW) .................... 19.5 (14.5)
Rated Engine Speed, rpm .................... 3600
Compression .................... 7.0:1
Fuel System .................... Carburetor
Governor .................... Mechanical
Oil Filter .................... Full Flow
Air Cleaner .................... Paper element
Intake Valve Clearance, in (mm) .................... 0.007 (0.18)
Exhaust Valve Clearance, in (mm) .................... 0.016 (0.41)
Spark Plug Gap, in (mm) .................... 0.025 (0.64)
Fuel Tank Capacity, gal (L) .................... 3.8 (14.5)
Oil Capacity, qts (L) .................... 4.0 (3.8)
Electrical System Rating, Volts .................... 12

AC 620 Power Take-Off

PTO Operational Type .................... Independent
PTO Clutch .................... Electric
Rear PTO Speeds, rpm .................... 2000
Front PTO Speeds, rpm .................... 2000

Transmission Configuration

Transmission Type .................... Hydrostatic
Number of Forward Gears .................... 3-Range
Number of Reverse Gears .................... 3-Range
Oil Capacity, qts (L) .................... 5.0 (4.7)
Maximum Forward Speed, mph (kph) .................... 10.4 (16.7)
Maximum Reverse Speed, mph (kph) .................... 6.2 (10.0)

Allis Chalmers 620 Wheels and Tires

Drive Wheels .................... 2WD 4x2
Steering Configuration .................... Front Steer
Steering System .................... Manual
Brakes Type .................... Mechanical disc
Front Tire Size (Std) .................... 4.00-12
Rear Tire Size (Std) .................... 8.00-16
Front Tire Size (Turf) .................... 20-8x10
Rear Tire Size (Turf) .................... 29-12.5x15

AC 620 Hydraulic System

Hydraulic System Type .................... Open Center
Implement Pump Type .................... Gear
Implement Pump Flow, gpm (Lpm) .................... 2.2 (8.5)
Hydraulic Pressure, Bar (psi) .................... 34.5 (500)
Hydraulic Fluid Capacity, qts (L) .................... 1.3 (4.7)
3-Point Hitch Category .................... 0

Dimensions and Weight

Wheelbase, in (mm) .................... 56 (1420)
Length, in (mm) .................... 83 (2100)
Overall Width, in (mm) .................... 48 (1210)
Height, in (mm) .................... 43.2 (1090)
Ground Clearance, in (mm) .................... 15 (380)
Turning Radius, in (mm) .................... 35.6 (900)
Weight, lb (kg) .................... 1500 (680)