Section IV. DIRECT SUPPORT MAINTENANCE
4-7. MAINTENANCE OF M138 TELESCOPE MOUNT
This task covers:
General Safety Instructions
Tools and Special Tools
Tool kit, electronic: system maintenance
Adjustable spanner wrench (7597708)
Torque converter (figure 6, appx D)
Use adhesives, cleaning solvents, and sealing
compounds in well ventilated area away from
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)
M138 telescope mount removed from
M110 A2 howitzer (TM 9-2350-30420-2)
Remove pin (1) from manual control lever (2).
Detent plunger is spring-loaded.
Remove manual control lever (2), detent plunger
(3), spring (4), and retaining ring (5).
Remove setscrew (6) using adjustable spanner
wrench. Remove externally threaded ring (7) from