192 Section 10 Governor Adjustments TP-6356 4/12
10.2.2 GM17644-4 (Non-Load Sharing)
and GM17644-5 (Load Sharing)
This section covers the non-load sharing governor
(Figure 10-5) and the load sharing governor
(Figure 10-6).
See Section 10.4 for the magnetic pickup adjustment.
GM17725B-G
Figure 10-5 Governor Non-Load Sharing
Actuator Installation (John Deere)
Use the following procedure to install the actuator.
1. Install the new cover seal into the groove of the
integrated actuator cover assembly.
2. Position the integrated actuator cover assembly
into the top of the pump while holding the metering
valve drive coupling parallel to the pump body.
Slightly lift the front portion of the integrated
actuator cover.
3. Carefully slide the integrated actuator cover toward
the rear of the pump body until the mounting holes
between the integrated actuator cover and pump
body align.
4. Use two long cover screws and one short cover
screw to assemble the integrated actuator cover to
the pump body. Tighten the screws to 4--5 Nm (35--
45 in. lb.).
GM17725B-G
Figure 10-6 Governor Load Sharing
5. Install a new O-ring on the return line connector
assembly. Apply a light coating of all-purpose
grease to the O-ring and install the connector.
Tighten to 5--6 Nm (43--55 in. lb.).
6. Install the fuel return line to the return line
connector.
Preliminary Adjustments
Refer to Section 10.5, Digital Isochronous Governor
Programming Kit GM39344.
Final Adjustments
Warm engines are normally more stable than cold
engines. If the governor is adjusted on a warm engine,
decrease the overall gain, derivative gain, and integral
gain by 5% to ensure a stable engine when started cold.
1. Move the generator set master switch to the RUN
position.
2. Adjust the frequency with the INC/DEC buttons on
governor controller to bring the frequency to 67 Hz
for 60 Hz models and 56 Hz for 50 Hz models.
If the desired frequency cannot be attained, go to
step 3.
If the desired frequency is attained, go to step 7.
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