TM 5-3810-294-34
ac. Assemble vacuum piston assembly (16) in
ag. Install fuel filter (62), fiber washer (63) and
vacuum cylinder in throttle body. Press retainer into
filter head ((4) in threaded passage in top of throttle
recess of body with flat side of screwdriver. Check for
body.
ah. Hold throttle closed and turn throttle stop
free movement of piston in cylinder
ad. Place throttle body gasket (18) on
screw (11) in until it just contacts stop on throttle body;
machined surface of throttle body.
then turn screw in 11/2 additional turns as a preliminary
ae. Place throttle body on fuel bowl be careful
idle speed adjustment.
ai. Refer to TM 5-3810-294-20 and install the
not to damage floats or vacuum piston assembly.
af
Aline holes in throttle body and gasket with
carburetor, throttle linkage, and fuel lines on engine.
Adjust carburetor as described in TM 5- 3810-294-20.
holes in fuel bowl and install six screws (4) and
lockwashers (5). Tighten screws uniformly and securely.
Section V. REPAIR OF GOVERNOR
slowing down, and the governor has maintained the
3-25. Description
engine at the desired speed, which is represented by the
The governor, in conjunction with the throttle maintains
throttle setting.
engine speed in response to changes in load. An
3-26. Removal
example of a change in engine load occurs when the
crane operator begins to lift a load. At this time, the
Refer to TM 5-3810-294-20 to remove the governor.
speed governor senses a tendency for the engine to slow
3-27. Disassembly
down. This automatically causes the governor linkage to
Refer to figure 3-5 and disassemble the governor as
open the carburetor throttle valve, thus allowing more
follows.
fuel to enter the engine. The additional fuel prevents the
engine from
KEY to FIG. 3-5
1. Rockshaft
17.
Governor carrier
2. Governor spring
18.
Governor weight carrier, assembly
3. Stop pin
19.
Drive gear, with shaft
4. Throttle lever
20.
Woodruff key
5. Pop screw
21.
Gear spacer
6. Bumper spring body
22.
Drive shaft bearing
7. Bumper spring
23.
Bearing spacer
8. Locating screw
24.
Drive housing
9 Thrust fork
25.
Gear spacer
10. Rockshaft
26.
Stepup gear
11. Connecting rod
27.
Gasket
12. Thrust bearing stop ring
28.
Cover
13. Thrust bearing
29.
Elbow (at engine )
14. Thrust sleeve
30.
Elbow (at cover)
15. Governor weights
31.
Lubrication tube
16. Weight pin
3-12
