Disassembly. - TM-10-3930-627-340048

b. Disassembly.

d. Inspection and Repair.

(1) Remove the screw (25, fig. 4-2) holding the

(1) Inspect fit of the drive shaft (7) in base

works assembly to the body (16), and remove the drive

bushing (2). Replace bushing in the base (3), if

gear (1) with the works assembly from the body.

clearance exceeds 0.010 inch, as follows:

(2) Remove the shaft clip (13), and remove the

(a) Press old bushing from the base.

thick and thin ball washers (12 and 11), the four balls

(b) Press in new bushing with outer flange of

(6), the fork base (10), assembled thrust bearing (9),

bushing flush with the edge of the base.

and upper race (8) from the drive shaft (7). Remove

thrust bearing from upper race.

of the base and drill through wall of the bushing.

(3) Press drive shaft from the drive gear (1)

(d) Burnish or ream inside diameter of

releasing assembled base (3) and base bushing (2),

bushing to 0.4385/ 0.4390 inch.

thrust' washer (4), and lower race (5).

(2) Inspect fit of drive shaft in body bushing (14);

(4) Drive out groove pin (27) securing fork (28) to

replace bushing if the clearance exceeds 0.005 inch,

shaft of governor lever (24). Remove governor lever

making sure there is a thrust washer (15) behind the

from body, releasing fork and bumper spring (26).

new bushing.

(5) Remove bumper spring adjusting screw (19),

(3) Inspect the thrust bearing (9) and the needle

nut (20), and plug (21) from body.

bearing (22) for pitting or scoring, and for free

c. Cleaning. Wash all parts in cleaning solvent; dry

movement of balls and rollers; replace bearings that

thoroughly.

show signs of wear.

(4) Inspect fit of shaft of governor lever (24) in

body bushing (17). Drive out plug (18) and bushing if

clearance exceeds 0.005 inch. Press in new bushing

and replace plug.

(5) Inspect all other parts for wear or damage;

replace worn or damaged parts.

e. Reassembly.

(1) Install needle bearing (22) and new oil seal

(23) in governor body (16).

(2) Position bumper spring (26) and fork (28) in

body, and carefully install shaft of the governor lever

(24) in body. Secure the fork to shaft with a groove pin

(27).

(3) Position lower race (5) on drive shaft, with hub

toward center of shaft, and follow it with thrust washer

(4), assembled base (3), and base bushing (2).

(4) Press shaft in gear (1); provide endplay of

0.004 to 0.010 inch between the gear and the base.

(5) With balls (6) in position, assemble upper

race (8), thrust bearing (9), fork base (10), and one thin

and one thick ball stop washer (11 and 12) on drive

shaft (7). Install shaft clip (13) in groove on shaft.

(6) Hold upper race in toward lower race, with

balls to outer circumference of upper race, and check

the clearance between thin and thick washers.

Clearance should be between 0.230 and 0.240 inch; add

or remove stop washers as necessary to obtain this

clearance.

Note. Stop washers are available in

thickness of 0.010 and 0.050 inch.

(7) assembled drive shaft in governor housing;

Figure 4-3. Governor, installed.

secure with screw (25)

4-5