Governor Linkage Adjustment - Hobart 9OC24S Operation Manual

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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL; TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
When the complete system is to be checked, and/or adiusted, a definite'sequence
of procedures should be followed:
First - Check or adjust actuator linkage
Second - Check or adjust magnetic pickup
Third - Check or adjust actuator
Fourth - Check or adjust electric control box
(1) Governor linkage adjustment
The proper adjustment of the mechanical linkage between the hydraulic actuator
and engine speed control lever is important to the satisfactory operation of other
electric-hydraulic governor components.
The most important thing to remember about this adiustment is that the actuator
and linkage must move the speed control lever through its complete range of
travel from full idle (fuel off) position to full speed (fuel on) position. An ad-
justment which does not provide full travel of the speed control lever can cause
sluggish operation and slow response time under load. When adjusting the
governor linkage, remember that the weight of the levers (4 and 8, Fig. 9) and
rod assembly will automatically hold the linkage in FULL SPEED (fuel on) position
when the engine is stopped. Check and adjust linkage as follows:
(4
(b)
(4
(4
before adjusting the actuator linkage, remove two attaching bolts from the
accelerator I inkage (Ref. Fig. 13) and move it away from the actuator so
that it cannot possibly interfere with actuator linkage adjustment.
Disconnect ball joint (5, Fig. 9) from actuator lever (4).
The fuel pump lever (8) should be securely clamped to the pump speed
control shaft (9), and the lever (8) should be in a near horizontal position,
pointing downward slightly at the ball-joint end.
If adiustment or tighten-
ing is required, loosen lever clamping bolt and be sure the pump shaft (9)
is rotated as far as it wil I go in a counterclockwise direction.
Position
the lever (8) on the shaft (9) so that it is pointing toward the rear of the
engine and pointing downward at an angle of about 10 degrees from
horizontal as shown in Fig. 8. Tighten clamping bolt. Actuate lever to
be certain it does not touch any engine parts throughout its full travel
range.
Measure the length of rod (7) between adjusting nuts (6). Correct length
is 5-l/16 inches. If length is not within l/16 inch of this dimension,
loosen nuts (6) and adjust.