Repair of Deflection or Elevation Boresight Control Assembly and Replacement of Housing Window

d. Repair. Repair is limited to replacement of the of

(4) Thread wire protruding from housing

through side of support (14, fig. 3-6). Install support in

the pointer, clutch, packing window and hardware.

housing and apply sealing compound, MIL-S-11031, to

threads of setscrew (10); secure to housing.

e. Assembly.

(5) Solder wire to contact (9, fig. 3-6).

(1) Position window (18) in insert of the housing.

Position contact on side of support and secure with items

(2) Apply sealing compound, MIL-S-11031, to

8 and 7.

threads of screws (16). Position plate (17) over window

(6) Position ground strap (6, fig. 3-6) between

and secure to housing with screws.

housing and lampholder assembly (3), install items 5 and

(3) Apply a thin film of grease, MIL-G-4343 to

4. Apply sealing compound, MIL-S-11031, to screw (2)

packing (15) and install into cavity of the adapter

and secure the strap.

housing.

(7) Install lamp (1) in either the lampholder

(4) Apply a thin film of grease, MIL-G-23827, to the

assembly (3, fig. 3-6) or lamp assembly (fig. 3-9).

splined surface of the adapter.

(5) Position clutch (14) over locating pins, install

washers (13) and secure with screws (12)

3-11. Repair of Deflection or Elevation Boresight

(6) Install stop (11) and spacer (10).

Control Assembly and Replace ment of

(7) Position knob (9) over adapter. Push in until

Housing Window (Fig. 3-7)

serrations on clutch, knob, and spline mate.

(8) Install spring (8) into center hole of the knob,

a. Disassembly.

secure with screw (7)

(1) Unscrew item 1 to remove item 2 and

(9) Position dial (6) on flange of the knob, install

pointer (3) from either knob assembly.

washer (5) and secure with nut (4)

(2) Remove items 4 through 8 and pull knob

(10) Install pointer (3) in vertical position using the

(9) from spline of adapter.

inside holes of both knob assemblies Position washer

(3) Remove spacer (10) and stop (11).

(2), secure with screw (1)

(4) Remove items 12 and 13, and pry clutch

(14) from locating pins.

3-12.

Repair of Horizontal or Vertical Boresight

(5) Remove packing (15) from cavity of

Control Assembly (Fig. 3-8)

adapter housing.

(6) Unscrew item 16. Remove plate (17) and

a. Removal. Remove items 1 and 2. Pull dial (4)

window (18) from housing.

from housing opening and remove packing (3) from inset

of housing.

Note: Screw (19) is removed only to purge the

reticle projector assembly.

b. Disassembly

(1) Remove items 5 and 6. Pull knob (7) from

b. Inspection.

end of adapter (9).

(1) Inspection the general condition of all

(2) Disassemble items 8 through 11 and pry

parts. Check for rust or corrosion.

plate (12) from locating pin (13). Do not remove pin.

(2) Inspect dial, check legibility of letters,

(3) Disassemble items 14 and 15. Remove

numbers, and graduations.

packing (16).

(3) Inspect spring for compression.

(4) Inspect packing, check for wear or

c. Inspection.

deterioration of rubber.

(1) Inspect the general condition of all parts.

(5) Inspect hardware, check for burred or

Check for rust or corrosion.

stripped threads.

(2) Inspect the spring for compression.

(3) Inspect the packing, check for wear and

c. Cleaning.

deterioration of rubber.

(1) Clean all metal parts with a cloth

(4) Inspect hardware, check for burred or

moistened with dry cleaning fluid.

stripped threads.

(2) Clean the rubber packing in warm water

with a mild soap. Dry thoroughly.

d. Cleaning.

3-9