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 119 of 590
TM 9-1240-401-34&P
Item No.
Item To Be Inspected
Procedures
10
ELEVATION HANDWHEEL
Check elevation handwheel (10) to ensure running torque is 8 to
12 pound-inches (0.904 to 1.356 N-m).
11
CORRECTION COUNTER
Check that correction counter (11 ) adds or subtracts an equal
number of roils from the elevation counter (9).
12
CORRECTION KNOB
Check correction knob (12) to ensure running torque is 2 to 4
pound-inches (0.226 to 0.452 N-m).
13
OVERLAY ASSEMBLY
Check overlay assembly (13) to ensure light is sufficient to
clearly define markings on counter.
I
Section Ill. Troubleshooting
I
4-7. GENERAL
a.
b.
c.
d.
The symptom index can be used as a quick guide to troubleshooting. Common malfunctions are listed in alpha-
betical order with a page number reference to the troubleshooting table, where a test or inspection and corrective
action are provided.
The direct support troubleshooting table (ref. para 4-9) lists the common malfunctions which maybe found dur-
ing maintenance of the M145/M145A1 telescope mount. Perform t he tests/inspections and corrective actions in
the order listed.
The general support troubleshooting table (ref. para 4-11) lists the common malfunctions which maybe found
during maintenance of the M145/M145A1 telescope mount. Perform the tests/inspections and corrective actions
in the order listed.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective action, notify depot maintenance.
4- 5
Back to Top
