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    620 Specifications Page 1


    Kent

    620 Specifications 

     

     

     

     

    ENGINE

     

    Universal Joints

    no moving parts

     

     

     

     

    Make

    Onan

    Hydrostatic Transmission

    Sundstrand - Variable delivery piston type pump with fixed stroke piston type motor. Replaceable oil filter.

    Model

    CCKB

     

     

    Cycle

    4

     

     

    Fuel

    Gasoline

     

     

    Cylinders

    2 (opposed)

     

     

    Cylinder Material

    Cast Iron

    Gear Transmission

    3-Speed Sliding Spur gear, Cast iron trans­mission case, Rolling contact bearings.

    Cylinder Bore

    3¼ inches

     

     

    Stroke

    3 inches

     

     

    Piston Displacement

    49.8 Cubic Inches

     

     

    Horsepower @ 3600 RPM

    19.5

    Differential

    8 pinion, spur gear, nonadjustable limited slip. Located in transmission case

    Compression Ratio

    7.0 to 1

     

    .

    High Speed (No Load)

    3850 RPM (Revolutions per Minute) Maximum

     

     
           

     

     

    Final Drive

    Individual spur gears, rolling contact bearings, cast iron case.

           

    High Speed (Full Load)

    3600 RPM

     

     

    Idle Speed

    1200 RPM

     

     

    Valves

    Positive rotating

    STEERING

     

     

    Stellite facing on valve

    Type

    Recirculating ball screw, manual operation

     

    heads

     

     

    Valve Tappet Clearance

    In take .006"-.008"

    Steering wheel revolutions

    3.2 stop to stop

     

    Exhaust .015"-.017 "

    Steering wheel diameter

    14"

    Valve Seats

    Replaceable, Stellite

     

     

     

    faced

    SEAT

     

    Cooling System

    Pressure air cooled, axia fllow blower

     

     

           
           

    Carburetor

    Zenith - Horizontal draft, adjustable main jet.

    Standard lever operated seat

    Adjustable from operator position 4 inches front to rear. Spring mounted, inclined ramp.

           

    Fuel Filter

    In fuel line

     

     

    Choke

    Manually operated

     

     

    Air Cleaner

    Replaceable paper element

     

     

     

     

     

     

    Fuel Pump

    Diaphram type

     

     

    Governor

    Cam gear driven, adjustable mechanical flyball, pressure lubricated

    FRONT POWER TAKE OFF

     

     

     

    Clutch

    12 volt electric solenoid actuated

     

     

     

     

    Breaker point gap

    .020 inch

    Speed

    Equal to engine RPM

    Ignition Timing

    200 before top dead

    Drive

    6-1/2 inches A section pulley

     

    center

     

     

    Spark Plug

    Allis-Chalmers No.2067308

     

     

     

    REAR POWER TAKE OFF (Optional)

     

     

    Spark Plug Gap

    .025inch

    Clutch

    12 volt electric solenoid actuated

    Lubrication System

    Gear type oil pump,

     

     

     

    adjustable pressure relief

     

     

     

    valve, replaceable oil filter

    Speed (@ 3600 Engine RPM)

    2000 RPM

           

    Starting Motor

    12 volt electric solenoid

    Drive

    1 inch internal 15 tooth involute spline

     

    shift starter

     

     

     

    Direction of Rotation

     

     

    Clutch

    Foot pedal operated, double V-belt drive, clutched by varying center distance between pulleys

     

     

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


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