MAINTENANCE OF M139 ELBOW TELESCOPE (CONT).
REASSEMBL Y (CONT)
Install eyepiece assembly (22).
Install setscrew (23), but do not tighten.
Refer to final inspection procedures for
adjustment and alinement of reticle cell
assembly and objective cell assembly. Adapter,
screw, lockwasher, eyeshield adapter, and
eyeshield will be installed after final inspection
procedures. Purging screw will be tightened
after final purging.
Install purging screw (24), but do not tighten.
MAINTENANCE OF EYEPIECE ASSEMBLY.
This task covers:
Tools and Special Tools
General Safety Instruction
Tool kit, electronic: system maintenance
Sealing compound (item 10, appx C)
Use adhesives, cleaning solvents,
and sealing compounds in well-
ventilated area away from open
flame Adhesives, cleaning sol-
vents, and sealing compounds are
harmful to skin and clothing, can
3-7 Eyepiece assembly removed
burn easily, and may give off