Usage:
3408 ( 6NB ),
3412 ( 7DB, 3NK ) Spark Ignited Engines
Description of Change: The Woodward PSG Governor Groups and the carburetor control groups have been improved to reduce high frequency linkage motion and provide better control of the engine.
Adaptable To: The changes in the improved governor groups, carburetor control groups, and governor fastener group are identified in the following charts and illustrations. The improved groups are in effect with 3408B Spark Ignited Engine 6NB894, and 3412 Spark Ignited Engines 7DB690 and 3NK60. When used together, the improved groups are adaptable to all earlier engines.
Illustration 1. Location of new components in 2W2396 Governor Fastener Group.
Illustration 2. Location of new components in 9Y9118 Carburetor Control Group.
Illustration 3. Location of new components in 9Y9119 Carburetor Control Group.
Illustration 4. Location of new components in improved 7C2285 Woodward PSG Governor Control Group. Lever (11) shown in "Shutoff" position. Angle (A) is 26 ± 5 degrees.
Illustration 5. Location of new components in improved 7C2287 Woodward PSG Governor Control Group. Lever (14) shown in "Shutoff" position. Angle (B) is 26 ± 5 degrees.
Illustration 6. Location of new components in improved 2W4175 Woodward PSG Governor Control Group. Lever (17) shown in "Shutoff" position. Angle (C) is 26 ± 5 degrees.
Illustration 7. Location of new components in improved 2W4759 Woodward PSG Governor Control Group. Lever (20) shown in "Shutoff" position. Angle (D) is 26 ± 5 degrees.
Illustration 8. Location of new components in improved 9Y9120 Woodward PSG Governor Control Group. Lever (23) shown in "Shutoff" position. Angle (E) is 10 ± 5 degrees.
