Disassembly and Reassembly of Interval Oscillator Module A10

assembly (63) on shaft assembly (75). Align

o. Position arm assembly (33) on retain-

the holes; insert and secure taper pin (62)

ing arm (35) and secure in place with re-

and setscrew (64).

taining ring (34).

f. Place thrust washer (77) and spur

p. Install two O-rings (29) on shaft as-

gear (73) on stud (74) with the gear hub

sembly (30). Place thrust washer (31) over

facing away from housing assembly (59).

retaining ring side of shaft assembly (30).

Mount gear arm (72) on stud (74) while

q. Insert shaft assembly (30) through

obtaining gear mesh between gear arm (72)

housing assembly (59) and secure in place

and shaft assembly (75). Install retaining

with retaining ring (12).

r. Place stop (14) on shaft assembly (30),

ring (71) on stud (74) and secure. Check

all parts for freedom of operation.

align the taper-pin holes, and insert and

g. Install thrust washer (37) on shaft of

secure taper pin (13).

antibacklash gear assembly (36), and in-

s. Install one end of spring (32) on arm

sert antibacklash gear assembly (36) into

assembly (33) and the other on spring re-

housing assembly (59). Install and secure

tainer (18).

t. Place sleeve (2) on shaft assembly

retaining ring (41) on shaft of antibacklash

gear assembly (36). Place coupler assem-

(16) and align the taper pin holes. Insert

bly (44) on shaft of antibacklash gear as-

and secure taper pin (7). Place bushing (3)

sembly (36), align the holes, and secure

on sleeve (2).

taper pin (42) and setscrew (43).

U. Secure spring (6) to housing assembly

h. Connect spring (56) to arm assembly

(59) and arm (4). Position the forked end

(78).

of arm (4) in bushing (3) and secure arm

i. Install arm assembly (78) to shaft

(4) to housing assembly (59) with pin (5).

assembly (57) and secure with retaining

Crimp over both ends of pin (5).

ring (79). Install O-rings (55) on shaft as -

Note: Upon completion of the above assembly

procedures, check all parts for freedom of move-

sembly (57).

ment.

j. Place sleeve (84) and spring (83) on

v. Place lamp (24) in housing (25), posi-

mask assembly (53). Place sleeve (85) on

tion housing (25) in bushing (2 3), and secure

spring retainer (18).

in place with flat washer (26), lockwasher

k. Place mask assemblies (53 and 54)

(27), and screw (28).

on shaft assembly (57); secure in place

w. When replacing spacer (60) into hous -

with screw (50) and lockwasher (51).

ing assembly (59), apply Locktite (Ameri-

l. Install O-rings (52) on mask assembly

can Sealant, Grade C, or equivalent) to

(53) and position spring (56) in place on

threads.

shaft assembly (57). Slide thrust washer

(58) on retainer ringside of shaft assembly

97. Disassembly and Reassembly of Interval

(57), then position shaft assembly (57) into

housing assembly (59) and secure in place

Oscillator Module A10

(fig. 79)

with retaining ring (45).

m. Install gear (67) on shaft assembly

a. Disassembly.

(69) with hub of gear (67) facing inboard.

(1) Remove two panhead screws (10)

Insert taper pin (68) and secure gear (67)

and lockwashers (9) that secure

on shaft assembly (69). Install two O-rings

cover (8) to header-shield assem-

(65) on shaft assembly (69).

bly (7). Remove the cover.

n. Place thrust washer (17) on shaft as -

(2) Remove retaining ring (16) that

sembly (16). Insert shaft assembly (16)

secures coupling assembly (1) in

through housing assembly (59) and mesh

header-shield assembly (7) and re-

gear on shaft assembly (16) with gear seg-

move coupling assembly (1).

ment (81) on shaft assembly (57). Secure

(3) Remove two screws (2) and two

shaft assembly (16) in place with retaining

screws (4) that support bearing as-

ring (1).

semblies (3 and 14) to header-

Note: During the drilling operation (if required)

shield assembly (7) and remove the

maintain 0.015 inch end play in shaft assembly (16)

two support bearing assemblies.

and 0.005 inch end play in shaft assembly (30).

147