Usage:
3406 (90U20011-Up),
3408 (67U17413-Up),
3412 (38S18228-Up) Industrial Engines With Standard 10 Percent Regulation Governors Containing A 1W-4642 Riser
Improved Governor Servo Components
The improved governor servo components are identified in Illustrations 1 and 2 and the chart. The improved components are in effect as shown in the subtitle and adaptle to all earlier engines.
The new governor servo components identified in this article are NOT compatible with 3 percent dashpot governors or 10 percent Caterpillar governors that have a low idle lug feature using a 1W-4641 Riser.
Illustration 1. Location of new servo components in a typical governor group.
Illustration 2. (DETAIL A) Location of new servo components in a typical governor group.
Energize To Run Solenoid Stop Bolt Adjustment Procedure
Illustration 3. Location of electrical shut-off group components.
Perform this procedure after installing the stop bolt (2) and cover (5), but before installing the solenoid assembly (1).
1. Using the manual shut-off lever, rotate the manual shut-off shaft as far as it will go in the shut-off direction. Hold the shaft in that position.
2. Turn in the stop bolt (2) inward until the large end of the stop bolt contacts the end of the internal shut-off lever.
3. Turn the stop bolt inward an additional 3/4± 1/4turn. Tighten lock nut (3) and install seal wire (4) and seal.