5464-647 WOODWARD

A return spring is included in the actuator. Do not use an additional return spring. 

(Low force return springs that may be located in an engine’s valve cover usually 

don’t affect EPG performance.) 

Make sure that the actuator is capable of moving the fuel control to the maximum 

and minimum limits. Let the fuel control limit actuator travel. Set the linkage so 

that the actuator is just above minimum when the fuel control is at its minimum 

stop and (except for Detroit Diesel engines) so that the actuator is just below 

maximum when the fuel control is at its maximum stop. We recommend that 

Woodward installation kits be used for Detroit Diesel engines. 

Use good rod end connectors. The link connecting the actuator lever to the fuel 

control lever must not be so long that it flexes when the prime mover is running. 

Installing the Magnetic Pickup 

Mount the magnetic pickup through a housing or rigid bracket. Make sure that the 

sensed gear is of magnetic material. The gap between the pickup and the 

outside diameter of the gear should be set to approximately 1.0 mm (0.04”) at the 

closest point (radial runout). Using the pickup with small gears may require 

spacing as close as 0.25 mm (0.010”). 

If you cannot measure the gap directly, it can be set in this manner: with the 

prime mover shut down, turn the pickup in (clockwise) until it touches the outside 

diameter of a tooth. Then back out the pickup (counterclockwise) approximately 

three-quarters of a turn. Run the gear slowly through 360 degree rotation to 

check the clearance of the pickup. When the gap is set, tighten the jam nut 

securely against the housing or bracket. 

The standard pickup models require mating connectors, MS 3102R-18-3P. The 

connectors are not furnished with the pickup, but may be ordered from 

Woodward if desired. See manual 82510, Magnetic Pickups and Proximity 

Switches for Electronic Controls, for more information