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 105 of 590
3-47
TM 9-1240-401-34&P
Section VI. General Support Final Inspection Procedures
3-28.
GENERAL
a.
This section describes and illustrates the final inspection of the M118A2/M118A3 elbow telescope. A final inspec-
tion will be performed prior to returning the M118A2/M118A3 elbow telescope to the using unit or to the supply
system.
b. If the M118A2/M118A3 elbow telescope being inspected fails to meet the required standards, ensure all mainte-
nance authorized at the applicable level has been performed correctly. Then send the M118A2/M118A3 elbow
telescope to the next higher level of maintenance.
c.
The M118A2/M118A3 elbow telescope must be purged and charged (TM 750-116) whenever the seal is broken.
3-29. M118A2/M118A3 ELBOW TELESCOPE FINAL INSPECTION
AND ADJUSTMENT
This task covers:
a.
Setting up telescope fixture
e.
Reticle accuracy inspection
b. Installing M118A2//M118A3 elbow telescope on
f.
Collimation inspection
telescope fixture
c.
Parallax adjustment
g.
Level adjustment
d. Eyepiece focus adjustment
h. Wormshaft assembly knob torque inspection
Test Equipment
Fixture, telescope, with accessories carrying case
Tubular spanner wrench, 1-7/16 and 1-29/64
5800954
inch (Item 30, appx F)
Projector, collimating (Item 21, appx F)
Tubular spanner wrench, 2 and 2-1/64 inch
Telescope, collimating (Item 23, appx F)
(Item 33, appx F)
Tools and Special Tools
Eccentric tool, fabricated (fig. C-3, appx C)
Sealing compound (Item 13, appx B)
Sealing compound (Item 15, appx B)
Tool Kit, Electronic System, Repair, Field Mainte- References
nance(SC5180-95-CL-B29)
TM 750-116
Torque adapter (Item 9, appx F)
M118A2/M118A3 elbow telescope removed from
Torque wrench (in-lb) (Item 36, appx F)
howitzer (TM 9-2350-311-10)
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