Manual 03108
3161 Air Pressure Fuel Limiter
Woodward
9
Assembly Procedures
(Refer to Figures 3-1 and 4-1.)
1.
Apply a light coat of white petroleum jelly on piston side of bellofram (24).
Install bellofram clamp screw (23) in bellofram (24) against the surface
marked “piston side”.
2.
Place bellofram spacer (25) over bellofram (24). Lubricate both ends of
bellofram inner spacer (26) with white petroleum jelly and install it on
bellofram clamp screw (23).
3.
Lubricate the bottom of bellofram piston (26) and install it In the side marked
“piston side” on upper rolling bellofram (27). Place bellofram (27) and piston
(26) on bellofram clamp screw (23).
4.
Install nut (29) on bellofram clamp screw (23) (Figure 3-1).
DO NOT over-tighten nut (29). Turn nut down until it is snug, then
turn 1/8 additional turn.
5.
Place lower gasket (18), orifice plate (19), upper gasket (20), and orifice
cover plate (21) on governor cover (17). (Observe “orifice plate side” on
gaskets 18 and 20). Secure with seven screws (22).
6.
Turn governor cover (17) with bottom side up. Install limiter piston (12),
output rod (13), limiter return spring (14), and lower spring seat (15). Secure
these parts in place with retaining ring (16).
7.
Turn governor cover (17) top side up. Install plunger return spring (11) and
fuel limit plunger (10) in limiter piston (12).
6.
Place gasket (9) on the cover. Install the bellofram assembly (23 through
29) on the bellofram guide (8). Be sure the bellofram is not pinched.
9.
Install the bellofram assembly (consisting of parts 23 through 29 and guide
6) on gasket (9).
10. Install limiter spring (7), upper spring seat (6), and limiter cover (5). Secure
parts to cover with three screws (1).
Calibration Procedures
Before attempting to calibrate the Air Pressure Fuel Limiter, refer to the engine
specifications and the governor test specifications for required speeds and air
pressures.
Install the governor on the test stand. Be sure test stand drive rotation is the
same as the governor pump rotation.
Fill the governor with 2.2 L (2.3 qt) of clean oil that has a viscosity of 100 to 300
SUS with an oil temperature for continuous governor operation of 66 to 82 °C
(150 to 180 °F).
