Woodward UG-10 Dial, Инструкция по установке и эксплуатации

Страница: 27 / 62

Manual 03040 UG Dial Governor
Woodward 21
Table 4-1 is a list of tools that are necessary only if a large number of governors
is being tested. For a small number of governors, only the pressure gauge is
needed to check oil pressure during testing.
Table 4-1. Test Stand Tools
Tool Description Woodward Number Application
Woodward Test Stand Engine simulator. Drives governor. Supplies pressure
oil. Includes gauges for testing.
Electronic Counter and
Frequency Pickup Indicates governor drive speed. Must have an output
of at least 60 cycles per revolution on a one second
time base. Must indicate speed to within ±1 rpm.
Readouts of display time must not exceed 5 seconds.
Pressure Gauge (0–1380
kPa/0–200 psi) To check governor oil pressure.
Dial Indicator 8995-037 To check and adjust droop setting.
Before installation, be sure speed droop is not negative. To check droop, first set
the speed droop control knob to zero.
1.
Put a dial indicator (tool 8995-037) on the governor with the indicator rod
touching the top of the speed setting gear.
2.
Place the serration wrench on the governor output shaft.
3.
Rotate the governor output shaft from minimum to maximum fuel position,
and check the dial indicator.
4.
No movement of the indicator is zero droop. If movement is greater than
0.05 mm (0.002 inch), adjustment is needed (Clockwise movement of the
indicator is positive droop. Counterclockwise movement of the indicator is
negative droop).
Loosen the locknut (190) on the speed droop screw (189) and turn the screw
counterclockwise to reduce droop. Turn the screw clockwise to increase droop.
When zero droop is obtained (0.05 mm/0.002 inch or less counterclockwise
movement), tighten the locknut again (190).
Check the adjustment again by moving the governor output shaft from minimum
to maximum fuel position. Droop can be zero or positive, it must not be negative.
Check the final droop setting with the governor operating on the prime mover as
shown in “Test Procedures” in this chapter.
Before operating a repaired governor for the first time, check that all installation
steps have been correctly completed. See Chapter 2, Installation Procedures.
Also, read all of Chapter 4.
Be prepared to make an emergency shutdown when starting the
engine, turbine, or other type of prime mover, to protect against
runaway or overspeed with possible personal injury, loss of life, or
property damage.