Check BAGSE alignment.

TM 9-4931-583-30&P

(b) Adjust three angular alignment bolts (2)

(6) Remove three mirror targets from TSU

boresight block tapered holes ZO28, ZO1l, and ZO1l,

to adjust pitch and roll. Tighten bolts and locknuts.

and store mirrors.

(13) Using steps 13 and 14, table 2-1, align for-

ward gun block (FG), if required, using procedures in

(7) Install boresight telescopes in boresight

paragraph (12) (a) and (b) above.

alignment assembly (ZO), left wing block (LW) and

right wing block (RW) as listed in steps 7 and 8, table

2-1.

(14) Using steps 15 and 16, table 2-1, check for-

ward gun block for azimuth alignment. If not within

(8) Adjust sliders to position boresight align-

tolerance, adjust block using procedures in paragraph

ment assembly in yaw and roll to meet tolerances in

12 (a) and (b).

steps 7 and 8, table 2-1.

(15) Using step 17, table 2-1, align left gun block

(LG), if required, using procedures in paragraph (12)

(9) Transfer telescope to position in step 9,

(a) and (b) above.

table 2-1 and adjust sliders until pitch adjustment is

within tolerance.

(16) Using step 18, table 2-1, align right gun

block (RG), if required, using procedures in paragraph

(10) Remove telescopes, remove TSU-GSE (ZO)

(12) (a) and (b) above.

block from TSU, tighten azimuth retaining knobs, re-

move BAGSE in reverse order of installation and in-

(17) Compare LG to RG, using step 19, table 2-1.

stall BAGSE on stand assembly.

Roll and yaw sensitivity is better in step 19 than steps

17 and 18, table 2-1. Any adjustment will improve

alignment. If any adjustment is made to either gun

NOTE

block, repeat paragraphs (12) and (13) above.

The next step is shelf alignment. The sliders

(18) Compare gun blocks to TSU blocks using

will not be used for this procedure.

steps 20 and 21, table 2-1.

(11) Install TSU-GSE (ZO) block on shelf. Install

(19) If any adjustment was required in parag-

telescope in position RW1l and target telescope with

raph (15) above, repeat paragraphs (11) through (15)

illumination assembly in position ZO11, and adjust

until steps 15 through 19, table 2-1, are within toler-

shelf support screws to align vertical and horizontal

ances listed.

reticle, (step 7, table 2-l). Install telescope in position

LW1l and target telescope in position ZO1l and adjust

Remove boresight telescopes and store in case

shelf support screws to align target reticle (step 8, table

No. 5.

2-l). Install telescope in FR28, install target telescope

in ZO28 and adjust shelf support to align for tolerance

Disconnect 28 vdc power supply.

in step 9, table 2-1.

h. Disconnect illumination assemblies and store in

(12) Using steps 10, 11, and 12, table 2-1, align

case No. 5.

upper block (UP), if required, using following proce-

dures and figure 2-4:

Disconnect cable assembly from electrical

power source and store in case No. 5.

(a) Loosen all locknuts. Yaw adjustment is

made by loosening one socket head screw and tighten-

ing the other.

2-7