(2) Refer to figure 11 and remove the
frame from the target assembly.
b. Disassembly, Replacement, and Reassem-
bly.
(1) Refer to figure 12 and disassemble
the frame assembly.
(2) Replace defective parts with service-
able parts.
(3) Refer to figure 12 and reassemble
the frame assembly.
c. Installation. Reverse the procedures in a
above.
50. Target Level
a. Removal. Refer to figure 13 and remove
the level assembly from the target assembly.
b. Disassembly, Repair, and Reassembly,
(1) Refer to figure 14 and disassemble
the level assembly.
(2) Replace defective parts with service-
a b l e parts.
(3) Refer to figure 14 and reassemble the
level assembly.
c. Installation. Refer to figure 13 and install
Figure 11. Target frame, removal, and installation.
the level assembly on the bracket.
d. Adjustment. If, after the circular level
52. Base Sleeve
has been adjusted ( para 46), the target level
a. Removal.
bubble is far off center, the target level is out
(1) Remove the base (para 51).
of adjustment. Tighten or loosen the adjust-
(2) Refer to figure 16, and remove the
ing screw (11, fig. 14) to bring the bubble to
setscrew (12).
center.
b. Disassembly, Replacement, and Reassem-
bly.
51. Target Base
(1) Remove the sleeve (8), spring (9),
a. Removal.
cover (10), and nut (11 ) from the
bracket shaft.
(1) Refer to paragraph 27 and remove
(2) Replace defective parts with service-
the target assembly from the tribrach.
able parts.
(2) Refer to figure 15 and remove the
(3) Refer to (8) through (11), figure 16
base from the sleeve.
and reassemble the sleeve.
b. Disassembly, Replacement, and Reassem-
c. Installation.
bly.
(1) Refer to (12), figure 16 and install
(1) Refer to (13), (15), (16), and (17),
the sleeve on the bracket shaft.
figure 16 and disassemble the base.
(2) Install the base (para 51).
(2) Replace defective parts with service-
able ones.
53. Bracket
(3) Refer to figure 16 and reassemble the
a. Removal.
base.
(1) Remove the target frame (para 49).
(2) Remove the target level assembly
c. Installation. Reverse the procedures in a
above.
AGO 10139A