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620 Specifications (con't)

POWER LIFT SYSTEM 

WHEELS AND TIRES 

Type

Hydraulic

Size

Front

Hydraulic Pump

2-1/4 GPM (Gallons per Minute) Hydrostatic Transmission charge pump

 

Agricultural 4.00 x 12 (Standard)

Relief Valve Pressure

500 PSI (Pounds per Square Inch)

 

Turf 20x8-10 (optional)

Control

Hand Operated

 

High Capacity 6.00x9 (optional)

Hydraulic Cylinder

 

2.25 inch diameter - 4 inch stroke

 

Rear

 

Agricultural 8x16 (Standard)

3 POINT HITCH (Optional)

 

 

Turf 29x12.50-15 (optional)

Type

Flexible Swinging draft hubs with ball couplers

 

High Flotation 31x15.50-15 (optional)

SAE & ASAE Category

Meets Category 0 Dimensions

Tread Width

See the chart in "Adjustment" Section

Control

Hand operated - same as power lift system

Tire Pressure

See the chart in "Lubrication and Service section

DRAWBAR 

LIQUID TYPE AND CAPACITY 

Type

Single position  - removable

Fuel Tank (Regular gasoline)

3.8 gaIIons

Height

13 inches

Engine Crankcase (Above 30F SAE 30, Below 30 degrees F SAE 5W-30)

3.5 quarts

Pin Size

3/4 inch

Transmission and Hydraulic System Allis-Chalmers Power Fluid 322 or Type "A" ATF.

5.0 quarts

BRAKES

Individual double disc type, can be locked together for simultaneous operation, parking brake is cam locking type

Final Drive Housings, each Alfis-Chalmers Gear Lube 715

0.5 quarts

ELECTRICAL SYSTEM 

DIMENSIONS 

Battery

45 Ampere hour 12 volt, sealed terminals

Wheel Base

56 inches

Alternator

20 Ampere flywheel alternator with silicon diode rectifier

Length (overall)

83 inches

Regulator

Transistorized temperature compensated voltage regulator

Height (overall)

48 inches

Protection

20 ampere circuit breaker.

Width (overall)

 

Lights

Fender mounted sealed beams

With Agricultural tires (narrow setting)

43-1/4 inches

WEIGHT 

With Agricultural tires (wide setting)

48 inches

Shipping weight

1300 pounds (approximate)

With Turf tires

50 - 1/2 inches

Operating weight - With 180 lb. operator

Rear - 1000 pounds (Approximate)

With High Flotation tires

56 - 1/2 inches

 

Front - 480 pounds (Approximate)

Ground Clearance (without drawbar)

15 inches

GROUND SPEED 

Turning Radius (With agricultural tires

 

(Approximate - Engine at 3600 RPM)

 

 

Outside Front Tire

Gear Range

Forward

Without using brake

8 Foot

1

0 - 4.2 MPH

Using Steering Brakes

6 Foot

2

0 = 6.3 MPH

 

Inside Rear Tire

3

0 = 10.4 MPH

Without using brake

3 Foot

 

Reverse

Using Steering Brakes

1 Foot

1

0 = 2.6 MPH

 

 

2

0 = 4.0 MPH

 

 

3

0 = 6.2 MPH

 

 

 

Source:  AC Operator's Manual, 620 Tractor, Form 1609107, 8/73, courtesy of Frank Heizler

 

 

 

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