620 Specifications |
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| ENGINE
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Universal
Joints
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no moving
parts
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| Make
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Onan
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Hydrostatic
Transmission
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Sundstrand -
Variable delivery piston type pump with fixed stroke piston type motor. Replaceable oil
filter.
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| Model
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CCKB
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| Cycle
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4
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| Fuel
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Gasoline
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| Cylinders
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2 (opposed)
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| Cylinder
Material
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Cast Iron
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Gear
Transmission
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3-Speed
Sliding Spur
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| Cylinder
Bore
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3¼ inches
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gear, Cast
iron trans
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| Stroke
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3 inches
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mission case,
Rolling
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| Piston
Displacement
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49.8 Cubic
Inches
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contact
bearings.
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| Horsepower
@ 3600 RPM
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19.5
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Differential
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8 pinion,
spur gear, nonadjustable limited slip. Located in transmission case
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| Compression
Ratio
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7.0 to 1
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| High Speed
(No Load)
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3850 RPM
(Revolutions per Minute) Maximum
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Final Drive
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Individual
spur gears, rolling contact bearings, cast iron case.
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| High Speed
(Full Load)
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3600 RPM
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| Idle Speed
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1200 RPM
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| Valves
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Positive
rotating
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STEERING
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Stellite
facing on valve
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Type
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Recirculating
ball screw,
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heads
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manual
operation
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| Valve Tappet
Clearance
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In take
.006-.008
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Steering
wheel revolutions
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3.2 stop to
stop
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Exhaust
.015"-.017 "
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Steering
wheel diameter
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14"
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| Valve Seats
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Replaceable,
Stellite
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faced
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SEAT
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| Cooling
System
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Pressure air
cooled, axial
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flow blower
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| Carburetor
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Zenith -
Horizontal draft, adjustable main jet.
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Standard
lever operated seat
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Adjustable
from operator position 4 inches front to rear. Spring mounted, inclined ramp.
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| Fuel Filter
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In fuel line
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| Choke
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Manually
operated
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| Air Cleaner
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Replaceable
paper element
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| Fuel Pump
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Diaphram type
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| Governor
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Cam gear
driven, adjustable mechanical flyball, pressure lubricated
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FRONT POWER
TAKE OFF
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Clutch
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12 volt
electric solenoid
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actuated
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| Breaker point
gap
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.020 inch
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Speed
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Equal to
engine RPM
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| Ignition
Timing
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200 before
top dead
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Drive
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6-1/2 inches
A section
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center
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pulley
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| Spark Plug
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Allis-Chalmers
No.2067308
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REAR POWER
TAKE OFF (Optional)
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| Spark Plug
Gap
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.025inch
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Clutch
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12 volt
electric solenoid
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| Lubrication
System
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Gear type oil
pump,
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actuated
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adjustable
pressure relief
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valve,
replaceable oil filter
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Speed (@ 3600
Engine RPM)
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2000 RPM
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| Starting Motor
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12 volt electric solenoid
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Drive
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1 inch internal 15
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shift starter
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tooth involute spline
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Direction of Rotation
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| Clutch
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Foot pedal operated, double
V-belt drive, clutched by varying center distance between pulleys
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