Governor - Kubota WSM 05-E3B Series Workshop Manual

05-E3B, 05-E3BG, WSM

[3] GOVERNOR

Three Lever Type Fork Lever
The governor system is a mechanical governor that
used the flyweight (5).
The flyweight (5) is mounted on the governor shaft
that rotates at the same speed as the crankshaft.
Because the feature of this mechanism takes out the
engine speed directly as a centrifugal force of weight, the
speed control that the change in the engine rotational
speed is sensitively transmitted to fork lever assembly
(A) and accuracy is high is enabled.
The fork lever assembly of this engine is composed of
fork lever 1 (6), for lever 2 (9), and the floating lever (7).
A slide plate is installed in fork lever 1. The governor
spring (3) is hooked to fork lever 2 (9).
The floating lever (7) installs the torque pin (8) of the
output drop prevention at the overload. The start spring
(2) is hooked to a slide plate, and holds the control rack
in the direction of the full fuel position.
Fork lever 2 (9) and the floating lever are installed in
fork lever 1 (6) with the fork lever shaft (4). The max
torque limitation (1) device limits the amount of the fuel
exhalation at the overload with the torque pin.
(1) Max Torque Limiter
(2) Start Spring
(3) Governor Spring
(4) Fork Lever Shaft
(5) Flyweight
(6) Fork Lever 1
(At Rated Operation)
When the engine is running, the fork lever 2 (9) and
the floating lever (7) are moving with the fork lever 1 (6)
due to the tension of the governor spring (3).
During the time, the torque pin (8) is pressed into the
floating lever by centrifugal force of the governor weight
(5).
The fork lever 2 (9) comes in contact with the fuel
limitation bolt (10), and the fuel injection pump supplies a
fuel necessary for rated operation.
(1) Max Torque Limiter
(6) Fork Lever 1
(7) Floating Lever
M-2
DIESEL ENGINE
(7) Floating Lever
(8) Torque Pin
(9) Fork Lever 2
(A) Fork Lever Assembly
W1012753
(9) Fork Lever 2
(10) Fuel Limitation Bolt
W1012924
KiSC issued 12, 2007 A