2-15. M146 TELESCOPE MOUNT FINAL INSPECTION AND ADJUSTMENT - continued
a. CHECKING ELEVATION SLIDE/ELEVATION BRACKET END PLAY
Using feeler gage, check that maximum of
0.003-inch (0.008-mm) clearance between ma-
chined surface of elevation slide and elevation
bracket is maintained when the elevation knob is
rotated from stop to stop.
Remove two cap screws (1), two Iockwashers (2),
and cover assembly (3). Discard Iockwashers
Tighten or loosen three self-ocking nuts (4) until
correct clearance is attained.
Apply sealing compound to three self-locking nuts
Install cover assembly (3), two new Iockwashers
(2), and two cap screws (1).
b. CHECKING ELEVATION KNOB TRAVEL
1 Rotate elevation knob (1) from stop to stop and
check amount of travel.
Elevation knob must rotate 2-1/2 complete
revolutions. If the 2-1/2 revolutions cannot be
met, adjust elevation knob mechanism as di-
rected in steps 2 thru 6.
Loosen setscrew (2).
Loosen self-locking nut (3).
Adjust elevation shoulder screw (4) in or out to ob-
tain minimum travel requirements.
Tighten setscrew (2).
Tighten self-locking nut (3).