Lift cap, spring and filter screen
assembly from main housing; discard performed
Caution: Place plunger where it will not be
packing. The screen assembly is made up of a screen,
damaged, a slight nick can cause extensive damage.
magnet and two retainers. The bottom retainer has a
(7) Throttle assembly.
hole in center to permit fuel flow; this retainer is soldered
(a) Compress nameplate retaining ring and
remove from groove.
(b) Pull throttle assembly from pump, figure
The throttle shaft
is a select fit
in its sleeve and
sizes are identified by color code.
Caution: Handle throttle shaft with care.
(8) Gear pump.
securing gear pump to main housing.
(b) Tap side of gear pump with a plastic
hammer to loosen from dowels.
(c) Lift gear pump off and discard gasket;
(9) Governor spring-pack.
flat washers securing governor spring-pack cover to
(b) Lift off cover and discard gasket, figure
Figure 3-13. Throttle assembly removal.
(c) Remove snap ring which holds governor
spring pack in sleeve with a pair of snap ring pliers.
Remove high-speed spring, spring
retainer and shims from spring-pack housing.
(e) Remove idle-spring plunger guide, idle
spring or springs, idle spring plunger, and spring rest
(10) Filter screen cap.
(a) Loosen filter screen cover on top of main
Figure 3-14. Gear pump removal.
Figure 3-12. Governor plunger removal.