TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 46 of 590
TM 9-1240-401-34&P
2-11. M146 TELESCOPE MOUNT MAINTENANCE INSTRUCTIONS - continued
c. Assembly - continued
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Install one stud (34) and two studs (33).
Apply grease (item 7, appx B) to new preformed
packing (49) and install in elevation slide (21).
Apply grease (item 7, appx B) to new preformed
packing (50) and install in threaded ring (35).
Install threaded ring (35) in elevation slide (21).
Apply grease (item 6, appx B) to machined sur-
faces of elevation slide (21) and mount and install
elevation slide in mount.
Slide retainer plate (31) over studs (33 and 34).
Install and adjust three new self-locking nuts (30)
so that elevation slide (21) moves freely without
binding. A maximum of 0.002-inch (0.005-mm)
clearance must be maintained on machined sur-
faces between bottom of elevation slide (21) and
elevation bracket (79).
NOTE
Elevation shoulder screw should be temporar-
ily installed prior to installation of knob and
related parts to ensure that elevation slide
moves freely without binding.
Install cover assembly (22) using two new
Iockwashers (24) and two cap screws (23).
Apply grease (item 6, appx B) to disk (48) and in-
stall on knob (29).
Install elevation dial (47) with numbers inverted on
knob (29).
Install spring washer (46) and round nut (45) on
knob (29).
Tighten round nut (45) enough that elevation dial
(47) fits snug on knob (29).
Install setscrew (44) in round nut (45).
2-12
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