Quantcast Figure 3-4. Diopter knob assembly-exploded view

 

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Figure 3-3. Eyepiece assembly, diopter knob, and reticle projector--exploded view
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TM-9-1240-311-34 Telescope Articulated: M127 (1240-437-1254) and M127A1 (M127E1) (1240-148-8539) and Hanger Assembly (1240-906-79451) Manual
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Disassembly - TM-9-1240-311-340014
(fig. 3-3) or items 1, 2, and 3 (fig. 3-11) from respective
(2) Clean packing in warm water with a mild
valve stems (7, fig. 3-3 or 4, fig. 3-11).
soap. Dry thoroughly.
d. Repair. Repair is limited to replacement of the
c. Inspection. Inspect parts of the Valve assembly
eyepiece assembly, packing, or hardware.
for wear, deterioration, and worn or broken threads.
e. Installation.
d. Repair. Repair is limited to replacement of any
(1) Apply a light film of grease, MILG-4343, to
defective or missing part.
packing (3) and install into groove on inside wall of the
e. Assembly. Assemble items in reverse order of
housing.
(2) Install eyepiece assembly (2) into the
disassembly.
housing.  Secure with setscrew (1).  Apply sealing
f. Installation.  Apply sealing compound, MIL-S-
compound, MIL-S-11031, over head of setscrew.
11031, to threads of the valve stem and secure in
position.
3-6.
Replacement of Purging and Charging Valve
Assemblies (Figs. 3-3 and 3-11)
3-7.
Repair of Diopter Adjustment Knob Assembly
a. Removal.  Remove the valve assembly from
telescope eyepiece housing (fig. 3-3) or from the main
a. Removal (Fig. 3-3).
housing of reticle projector assembly (fig. 3-11).
(1) Remove items 8 and 9.
b. Disassembly. Disassemble items 4, 5, and 6
1-Screw, 6-40 x 15/32, 8590832
5-Pin, 3/32 x 6/16 (2),
9-Clutch, 8624617-2
2-Spring, compression, 5 coil,
MS16555-617
10-Pin, 1/16 x 1/4 MS16555-602
8590833
6-Dial, 8624531
11-Packing, 0.424 id, 8619853
3 -Setscrew, 4-40 x 3/16 (2),
7-Screw, 2-56 x 5/16 (3),
12-Adapter, 8624530
MS51021-10
MS61957-4
13 - Pin, 3/32 x 3/8 (2), MS16555-618
4-Knob, 8624520
8-Washer lock, No. 2 (3),
14-Housing, 8624529
MS35338-134
Figure 3-4. Diopter knob assembly-exploded view.
3-5

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