TSP 5597
WOODWARD GOVERNOR COMPANY PAGE 7
FORT COLLINS, COLORADO Revision B9
CAGE (PSCM) 31361
P/N: 8250-771 S/N: 11483531
TESTED BY: A.LUCKMAN Date: 13/09/2024 STAND: BME#2
TSP FOR UG- AND PG-BASED UNIVERSAL ACTUATORS
HAVING A CASE DRAIN
1. Physically force the terminal shaft in a direction to drive the servo to bottom
stroke and zero a protractor at this MINIMUM FUEL position.
2. Set the stand for rotation shown on the sales spec sheet and record rotation
direction here: CW rotation.
3. Fill the actuator with 15W40 oil through the supply port in the case, allowing
the oil to overflow into the drain standpipe. Check that the drain standpipe is
not blocked. Turn the drive at 200—500 rpm for 30 seconds to break in the pump,
Increase speed to 800—1300 rpm.
4. Center the torque motor armature between the TM poles with tool 8993— 507. Adjust
the 3492—049 flapper so that the terminal shaft begins to drift towards mid—
stroke, Adjust the flapper so the terminal shaft stops or drifts very slowly. Use
a 3/32” allen wrench having a ball end to adjust the flapper.
5. Install the 3412-061 armature stop and torque motor cover. Tighten the TM cover
screws before proceeding.
6. Once the oil inside the actuator has reached a temperature Of 150—170 degrees F.,
calibrate the feedback linkage for the following relationship. Apply positive
polarity to pin A and negative to pin B. Adjust the level with a 3/32" alien
wrench in the 3579—033 spring seat. A 1/8" allen wrench locks the range slider.
Current T.S. position Actual Position
20mA 1-2 deg from MIN 1.2
160mA 36-41 deg from MIN 37.9
7. The 1101-525 range slider screw has been torqued to 35 lb-in
8. Slowly ramp the current to stroke the terminal shaft from MINIMUM to MAXIMUM and
back to MINIMUM. The shaft should follow the current changes smoothly. There
should be at least 42 degrees total travel.
9. Verify that the terminal shaft moves to maximum travel before 200 mA is reached
and that it moves to minimum travel with some current level greater than O mA.
10. Supply 200 to the actuator and lower the speed to 200 rpm. With a torque
wrench on the terminal shaft, slowly move the shaft from MIN to MAX and back to
MIN. Be $ure the torque .is at least 60 in—lb.
Actual: 200 in-lb
TSP 5597
WOODWARD GOVERNOR COMPANY PAGE 7
FORT COLLINS, COLORADO Revision B9
CAGE (PSCM) 31361
At 700 rpm, 10 ft—lb ACTUATORS (REFERENCE SALES SPEC) should have at least 155 in
—lb of torque. The 20 ft-lb actuators should have at least 310 in—lb of torque.
Actual: 200 in-lb
11. Drain the actuator aha install the cover. Tamperproof seal two cover
screws.
12. Leak test the actuator with psi in the dunk tank. Install shipping plugs in
the supply and drain ports in the case.
13. UG—based units
The actuator drains through the case so be sure that a .125—27 NPTF plug is present
in the port beside the drive shaft.
PG—based units
The actuator drains through the case so be sure there is a seal on the drive
shaft.
