Electronic Mounting Block Assembly

TM 11-6720-239-35

Retaining ring (H118)

1 Shutter fastening screws (H138)

Actuator arm spring (MP180)

2 Shutter fastening screw (long) (H139)

Shoulder rivets (H134)

3 Shutter front casting assembly (A61)

Actuator arm pivot pin (MP179)

4 Shutter rear casting assembly (A65)

Cell wedge (MP181)

5 Top etch plate (MP115)

Flash filter actuator assembly (A63)

6 Base block mounting screw (H135)

Cell lens mount (MP170)

7 Base block mounting screw (short) (H136)

Wave washer (H133)

8 Module mounting screws (H132)

Shutter shaft sleeve (MP194)

9 Base block and electronic mounting block assembly

Shutter shaft (MP188)

(A43)

Shutter mount spring (MP187)

10 Front casting light seal (MP114)

Release cover screws (H137)

11 Front decorative plate (MP173)

Cable release cover (MP185)

12 Bezel friction spring (MP172)

Release block retainer (H142)

13 Bezel cap (MP175)

Shutter release block (MP193)

14 Center ring (MP177)

Shutter gasket (H143)

15 Outer ring (MP178)

Electronic mounting board insulator (E16)

16 Bezel spring (MP176)

Lens retainer (MP189)

17 Bezel (MP174)

Rear positive lens (MP190)

18. Front lens mount assembly (A64)

Shutter mount screw (H140)

19 Cell lens retainer (MP171)

Shutter mount (MP186)

20 Cell lens (MP169)

Figure 3-3. Shutter disassembly-Continued.

(29) If necessary, drill out the rivets (90)

3-7. Disassembling the Body/Bellows

and lift off the actuator detent spring (91).

Assembly

(fig. 3-6)

(30) If necessary, remove the actuator detent

pin (92) and lift off the actuator detent roller

a. Disassemblg, Stage 1.

(93).

(1) Using bellows pliers tool, lift up the 14

(31) If necessary, remove the oval head rivet

tabs on the back frame of the bellows assembly

(94) and lift off the capacitor inner contact (95).

(1) and lift the bellows assembly off of the body

assembly (2).

(32) If necessary, remove the oval head rivet

(2) The bellows light seat (3) is now loose,

(96) and lift the capacitor common contact away

and can be removed.

from base block (98).

(3) Using the shutter release bezel remover

b. Electronic Mounting Block Assembly (fig.

tool pull off the shutter release bezel (4).

35). All electronic components are readily acces-

(4) Lift out the shutter release bushing as-

sible, and can be removed individually without

sembly (5) and outer frame top spacer (6).

special techniques. When soldering or unsoldering

(5) Cut off the shutter release tip (7).

components, observe the precautions listed in par-

(6) Lift off the shutter release knob (8) and

agraph 3-1 c. To completely disassemble the elec-

the shutter return spring (9).

tronic mounting block assembly, proceed as fol-

(7) Using the link pivot remover tool, remove

lows :

the two link pivots (12) and remove two link

(1) Carefully unsolder and remove the elec-

pivot spacers (13) and U-frame assembly (14).

tronic components (1 through 16).

(8) Lift off the outer frame bottom spacer

(10) and the spring washer (11).

(2) Lift off the flexible circuit assembly (17),

flexible circuit insulator (18), and the electronic

(9) Pivot the inner frame bottom (15) to the

mounting board insulator (19).

right and lift it out.

(10) If necessary, drill out the rivet (16) and

(3) If necessary, remove the three oval head

remove track guide (17).

rivets (20), and lift the flash compensating

common contact (21), flash compensating upper

(11) If necessary, drill out the brake rivet

contact (22), and flash compensating lower con-

(23) and remove the brake washer (24), the

tact (23) from electronic mounting block (24).

brake sleeve (25), and the brake spring (26).

Figure 3-4. Baseblock disassembly.

Located in back of manual.

3-7