WOODWARD PSG GOVERNOR
TESTING AND ADJUSTING
Tighten knob (2) to hold the lever and bracket in
position. After an adjustment is made check the
speed droop. See CHECK SPEED DROOP.
Several adjustments can be necessary to get the
desired speed droop.
When lever (4) is in the position that gives the
desired speed droop, set stop screw (5) against the
pin on lever (4). This will make it easy to return the
speed droop lever to the desired position after
disassembly and assembly of the governor.
PILOT VALVE ADJUSTMENT
NOTE: The illustration shows an earlier governor
installation. Present procedure is the same.
WOODWARD PSG GOVERNOR INSTALLED
1. Pipe plug opening.
Check the adjustment of the pilot valve when the
governor is disassembled (linkage and top cover re-
The top cover is pushed away from the body of the
governor by a strong spring. Loosen all the bolts
that hold the cover in position evenly to decrease
the force of compression of the spring.
Remove the pipe plug from inspection opening (I).
Use a light to look for the control opening in pilot
valve bushing (2) and regulating land (3) on the pilot
Push pilot valve (6) in the direction of the drive end
as far as possible. Check the length of port
1. Inspection opening. 2. Pilot valve bushing. 3.
Regulating land. A. Port opening. B. Port opening.
the pilot valve in the opposite direction as far as
possible. Check the length of port opening (B).
The length of port opening (A) must be the
same, within 0.25 mm (.010 in.), as port opening
2. Pilot valve bushing. 3. Regulating land. 4.
Locknut. 5. Spring seat. 6. Pilot valve.
If the lengths of the port openings are not correct
hold spring seat (5) with 1P87 Adjusting Wrench.
Loosen locknut (4). Turn the pilot valve as
necessary to get the correct adjustment.
NOTE: Turn the pilot valve clockwise to increase port
opening (A) and decrease port opening (B). Turn it
counterclockwise to decrease port opening (A) and
increase port opening (B).