3161 Air Pressure Fuel Limiter
Manual 03108
8
Woodward
7.
Carefully remove fuel limit plunger (10) and plunger return spring (11).
8.
Remove seven screws (22) from orifice plate cover (21).
Be careful not to damage orifice plate (19) when removing upper
gasket (20) and lower gasket (18).
9.
Turn cover (17) over. Remove retaining ring (16).
10. Remove lower spring seat (15), limiter return spring (14), output rod (13),
and limiter piston (12) from cover (17).
Cleaning
Clean parts with solvent and a stiff brush to remove foreign particles.
Observe manufacturer’s instructions or restrictions regarding the
use of solvents. If no instructions are available, handle with care. Use
the cleaning solvent in a well ventilated area away from fires or
sparks.
Clean parts with clean, lint-free wipes, or blow dry with clean, dry air.
Handle parts that have been machined to a close tolerance carefully, to prevent
damage caused by contact with other parts or objects.
Part Inspection
(Refer to Figure 4-1.)
Springs (7, 14,11)
—Inspect springs for rust and corrosion and replace if any
damage is found.
Limiter Piston (12)
—Inspect limiter piston (12) for nicks and scratches on sharp
corners.
Fuel Limit Plunger (10)
—Inspect fuel limit plunger (10) for nicks and scratches.
The plunger must slip freely In limiter piston (12).
Orifice Plate (19)
—Inspect orifice plate (19) for plugged or damaged filter and
orifices.
Assembly
To prepare to assemble the Air Pressure Fuel Limiter, lay the parts in an orderly
fashion on a clean, dry work surface.
Use only new O-rings and gaskets. Careful, precise assembly methods will save
time, and help to ensure correct calibration and operation of the device.
Torque all 1/4-20 screws to 10 N
m (90 lb-in).
