TM 9-1240-400-34&P
Section IV. DIRECT SUPPORT MAINTENANCE
4-7. MAINTENANCE OF M138 TELESCOPE MOUNT
This task covers:
a. Disassembly
c.
Repair
b. Cleaning
d.
Reassembly
INITIAL SETUP:
General Safety Instructions
Tools and Special Tools
Tool kit, electronic: system maintenance
(SC 5180-95-CL-B29)
Adjustable spanner wrench (7597708)
Torque converter (figure 6, appx D)
Use adhesives, cleaning solvents, and sealing
compounds in well ventilated area away from
Materials/Parts
open flame. Adhesives, cleaning solvents,
Aircraft grease (item 8, appx C)
and sealing compounds are harmful to skin
Sealing compound (item 10, appx C)
and clothing, can burn easily, and may give off
Self-locking screw (NAS1352-3LL8P)
harmful vapor
References
TM 9-254
Equipment Conditions
M138 telescope mount removed from
M110 A2 howitzer (TM 9-2350-30420-2)
DISASSEMBLY
1
Remove pin (1) from manual control lever (2).
NOTE
Detent plunger is spring-loaded.
2
Remove manual control lever (2), detent plunger
(3), spring (4), and retaining ring (5).
3
Remove setscrew (6) using adjustable spanner
wrench. Remove externally threaded ring (7) from
adapter (8).
4-6
