Actuator Linkage Adjustment - Hobart 60PL20 Operation And Maintenance Manual

(2) Actuator linkage adjustment

The proper adjustment of the mechanical linkage between the electric actuator and engine speed
control lever is important to the satisfactory operation of the complete system.
Exact adjustment instructions regarding effective length of rod assembly (6, Fig. 3), or regarding
the proper hole in actuator lever in which to attach ball joint (4) cannot be determined because of
slight variations in brackets, mountings, and engine performance characteristics. However, defi-
nite rules must be followed in making the adjustments:
RULE 1. Adjust linkage to use FULL TRAVEL of actuator output shaft (1).
RULE 2. Linkage must move speed control lever (7) from FULL IDLE to FULL SPEED position,
or VERY CLOSE to FULL SPEED position in order for the generator to pull 125% load.
Check and adjust linkage as follows, with engine stopped.
(a) Before making adjustment, observe and note which hole in actuator lever (3) is used to
mount ball joint (4). It does not necessarily have to be the same hole as may have been pre-
viously used. Disconnect ball joint (4) from actuator lever (3).
(b) Be sure neither lever (the actuator lever (3) , or the fuel control lever (7) has slipped on
shafts. If a lever has slipped, position it correctly and tighten securely.
(c) Place both levers (3 and 7) in FULL IDLE position an attempt to connect ball joint (4) at
the hole in actuator lever (3) from which it was removed in step (a). If connection cannot be
made, loosen nuts (5) and adjust effective length of rod assembly (6, Fig. 4) so that connec-
tion can be made.
(d) Manually operate actuator lever back and forth between FULL IDLE and FULL SPEED. If
adjustment is unsatisfactory, try another hole in ACTUATOR lever and readjust rod length.
(e) Tighten all parts securely when adjustment is completed.
December 31/91 Revised
OM-2053
1. Actuator shaft
2. Signal input connector
3. Actuator lever
4. Ball joint, actuator
5. Nut, 1/4 x 28
6. Rod
7. Fuel pump lever
8. Ball joint, fuel pump
Governor Actuator Linkage
(Woodward Governor)
Figure 3
2-3
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