Figure 3-2. Headrest and bracket assembly exploded view

1-Setscrew, 6-32 x 1/8 (3)

3-Screw, 10-24 x 1/2, MS16995-36

5-Washer, flat 7/32 id, 221432

MS51021-21

4-Washer, lock, No. 10, MS35333-73

6-Headrest and bracket assembly

2-Eyeguard, 10549867

Figure 3-1-Continued.

(1) Guide bracket assembly (6) over the

before removing eyepiece assembly.

Refer to

eyeguard and position on neck of the eyepiece

paragraphs 3-4 a and g.

assembly. Install items 5 and 4, secure with item 3.

(2) Install headrest (1, fig. 3-2) into either

a. Removal.

positioning hole in bracket assembly for convenience of

(1) Remove item 1.

Unscrew eyepiece

the operator.

assembly (2) and remove from housing.

(2) Reach into housing and remove packing

3-5.

Replacement of Eyepiece Assembly(Fig. 3-3)

(3).

Note:

Remove headrest and bracket assembly

b. Inspection.

(1) Inspect the eyepiece assembly.

Check

9-Spring, compression, 15 coils,

4-Support, 11730901

1-Headrest

862453677

5-Headrest, padded, 10553476

2-Screw, 1/4-28 x 3/8, (2)

10-Bracket, 8624535

6-Bracket assembly, 8624562

MS51958-77

7-Screw, 8-36 x 1-1/8, (2) 8624676

3-Washer, lock 1/4 scr size, (2)

8-Plunger (2), 8624675

MS35338139

Figure 3-2. Headrest and bracket assembly exploded view.

3-3