Figure 2-8.1. Tie bar assemblies.

TM 5-3610-220-14

Figure 2-8.1. Tie bar assemblies.

by a plate with a window through which the indicator plate

Paragraph 2-3 a. Add the following subparagraph after

fastened to the control knob shows the different vacuum area

subparagraph (3).

positions.

(3.1) Fasten the lamp tie bar assembly (1, fig. 2-8.1) to

c. Purpose. It regulates the air intake through the

both lamps with the thumb screws (2) on the tie bar. Remove

vacuum back controlling the area on the suction plate for

four socket head screws (3), two on each arm, and position

various film sizes and screen sizes. Page 2-11. Paragraph 2-

the arm tie bar assembly. Fasten the arm tie bar assembly

35 c is superseded as follows:

(4) with previously removed socket head screws." Page 2-9,

paragraph 2-15 is superseded as follows:

c. Install the 19 inch or 24 inch lens on the lensboard

as detailed in the following procedures:

2-15. Vacuum Back Valve Control Knob

a. Description. The vacuum back valve control knob

(13, fig. 1-4), is an indicator knob, controlling the vacuum

(1)

Nikkor 19 inch lens.

area of the vacuum back.

(a) Remove the lens mounting plate (4, fig.

b. Location. It is mounted in the valve housing, covered

2-10) with the attached lens (1) from the lens box