DISASSEMBLY OF THROTTLE BODY.

TM 10-3930-623-34

2. Remove drain plug (37) from outside bottom of

4-77. DISASSEMBLY OF THROTTLE BODY.

fuel bowl.

1. Remove four bowl to body screw and

3. Remove discharge jet (40) and fiber washer

lockwasher assemblies (1, figure 4-20) which attach

(41).

throttle body (14) to bowl (33).

4. Remove main jet (42) and fiber washer (43) from

2. Raise throttle body (14) slightly and separate

bottom of fuel bowl.

bowl to body gasket from fuel bowl and then remove

5. Remove well vent (45) from center of large

throttle body assembly being careful not to damage

opening in machined surface of the fuel bowl.

floats.

6. Close choke and scribe across choke lever (23),

3. Invert throttle body assembly and remove float

choke bracket (27) and across air intake adjacent to

pin (19) from slotted end of hinge bracket, using

lever as a guide to correct re-assembly.

screwdriver to force pin through slotted end of hinge

7. Remove choke lever spring (22).

bracket. Complete removal of pin from opposite side,

8. Remove choke plate screw and lockwasher

then remove float assembly (18) and fuel valve needle

assemblies (21) and choke plate (20).

(part of 16).

9. Remove choke bracket screws, lockwashers

4. Remove bowl to body gasket (2) from machined

and choke bracket (23 through 32).

surface of throttle body, and remove venturi (46).

10. Drive out shaft hole plug (34), using a 6 inch

5. Remove fuel valve seat (part of 16) and fiber

length of 1/4 inch rod inserted through opposite shaft

washer (17) from throttle body.

hole.

6. Remove idle jet (44) from passage in machined

11. To remove choke shaft seal (35) and retainer

surface of throttle body near fuel valve seat, using small

(36), screw a 5/16 inch fine thread tap into packing

screwdriver.

retainer until firmly seated, then insert long punch or rod

7. Remove idle adjusting needle (3) and friction

through opposite shaft hole and drive punch against end

spring (4) from side of throttle body.

of tap until retainer is free of air intake body. Remove

8. Back out throttle stop screw (9) until threaded

retainer and packing from tap and repeat at opposite

end is flush with throttle lever. Close throttle and mark

shaft hole.

across throttle body and throttle lever as a guide to

correct re-assembly of parts.

4-79. STARTER. Determine, by performing applicable

9. File off riveted or peened end of throttle plate

tests in Section VII, degree of disassembly necessary to

screws (6) flush with throttle shaft (7), being careful not

restore the starter to operating condition, then

to damage throttle plate (5) or throttle body bore.

disassemble only as far as necessary according to the

Remove throttle plate screws and throttle plate.

following steps.

10. Remove throttle shaft and stop lever assembly

from throttle body and drive out shaft hole plug (11),

1. Disconnect field coils (47, figure 4-21) from

using a 6 inch length of 1/4 inch rod inserted through

solenoid (15) terminal.

opposite shaft hole.

2. Remove through bolts (2); then separate

11. To remove shaft hole seal (13 and 15) and

commutator end bell (1) from starter housing (49).

retainer (12), screw a 5/16 inch fine thread taper tap into

3. Remove solenoid (15) and shift lever (27); then,

seal retainer until firmly seated, then insert long punch or

remove screw (32) and washer (33) to free center

rod through opposite shaft hole and drive punch against

bearing plate (41). Take armature (34) with attached

end of tap until retainer is free of throttle body.

parts from drive end bell (24).

4. Remove drive thrust collar (36), retaining ring

(37), and take drive assembly (39), stop collar (38) and

4-78. DISASSEMBLY OF FUEL BOWL BODY.

remaining parts shown from armature shaft.

Drive

1. Remove main passage plug (38, figure 4-20)

assemblies are serviced as a unit. Do not disassemble.

and fiber washer (39) from bottom of fuel bowl.

4-25