TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 676 of 828
TM 9–2350–311–20–2
18–8
Change 2
18–3 M145/M145A1 TELESCOPE MOUNT
This task covers: a. Inspection of M145/M145A1 Telescope Mount
b.
Removal of M145/M145A1Telescope Mount
c. Disassembly of Linkage Assembly
d.
Inspection of Linkage Assembly
e. Assembly of Linkage Assembly
f.
Disassembly of Level Assembly
g. Assembly of Level Assembly
h.
Disassembly of Disk Assembly
i.
Assembly of Disk Assembly
j.
Disassembly of Quadrant Support Assembly
k. Assembly of Quadrant Support Assembly
l.
Disassembly of Counter Box Assembly
m. Assembly of Counter Box Assembly
n.
Installation of M145/M145A1 Telescope
Mount
INITIAL SETUP
Tools
Artillery and turret mechanic’s tool kit
(SC 5180–95–CL–A12)
Torque wrench (item 18, Appx H)
Materials/Parts
Lockwasher (item 82, Appx G)
Lockwashers (5) (item 58, Appx G)
Lockwashers (4) (item 74, Appx G)
Lockwashers (4) (item 83, Appx G)
Lockwashers (4) (item 96, Appx G)
Self-locking nuts (2) (item 181, Appx G)
Webbing strap (item 35, Appx D)
Personnel Required
2
References
TM 9–2350–311–10
TM 750–116
Equipment Condition
M117/M117A2 panoramic telescope removed
(TM 9–2350–311–10)
a.
Inspection of M145/M145A1 Telescope Mount
For inspection refer to TM 9–2350–311–10.
b.
Removal of M145/M145A1 Telescope Mount
WARNING
M145/M145A1 telescope mount weighs 96 pounds (43.5 kg). Observe caution when lifting to pre-
vent bodily injury or equipment damage.
NOTE
Mark lower gun arm caps before removal. Lower gun arm caps must be installed in same position
from which they were removed.
1
Remove four cap screws (1), four lockwashers (2), and two lower gun arm caps (3). Discard lockwashers.
2
Loosen four cap screws (4) securing linkage assembly (5) to M145/M145A1 telescope mount (6).
NOTE
After loosening four cap screws, you may have to tap arm with a soft faced hammer to release
gripsprings located between plates.
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