Engine Controls And Governor; Throttle And Engine Shut-Off Controls - Allis-Chalmers HD-5 Manual

SECTION VI - ENGINE CONTROLS AND GOVERNOR
Topic Title
Engine Controls
Topic No.
1
Governor ........................ 2
1. ENGINE CONTROLS
I - Throttle And (n9ine Shut·Off Controls-------'
A. Deser; ption.
The throttle control lever is used to regulate the
speed of the engine. A throttle control rod con-
nects the throttle lever with the variable speed
control lever on the governor. The throttle control
rod is of a pre-determined length, therefore, no
rod linkage adjustment is necessary. The engine
runs at full governed speed when the throttle con-
trol lever is pulled all the way back and runs at
idling speed when the throttle control lever is
pushed all the way forward.
The throttle control lever is attached to the shaft
of the throttle control assembly mounted to the
cowl. The throttle control assembly consists of two
spring loaded friction discs and two pressure plates
enclosed in a cover assembly. This friction aSSem-
bly acts as a brake and holds the throttle lever
71
in any desired position, therefole, an infinite range
of engine speed is obtained between idle and
wide open. A throttle retracting rod and spring,
extending from the front of the throttle control rod
to the blower housing, is used to prevent the con-
trols from creeping from low idle position when
idle speed is desired. The distance the throttle
lever travels (from idle to wide open) is controlled
by the governor variable speed lever.
The engine shut-off control rod opens and closes an
air valve in the blower air intake tube pnd also
moves the governor fuel shut-off lever to its open
and closed positions. When the shut-off control rod
is pushed in (forward) as for as it will go (running
position), the air valve and the governor fuel
shut-off lever are moved to their full open posi-
tion. When the shut-off control rod is pulled out