RETICLE CELL ASSEMBLY MAINTENANCE INSTRUCTIONS

TM 9-4931-710-14&P

5-4 M139/M139A1/M140/M140A1/M154 ALINEMENT DEVICE MAINTENANCE INSTRUCTIONS-CONTINUED

REASSEMBLY - CONTINUED

N Coat new packing (21) with a light coat of grease

O Apply a light coat of sealing compound (Item 8,

Appendix D) to threads of objective cell assembly

(22).

P Install objective cell assembly (22) to the depth

measured in step I, page 5-10.

5-5 RETICLE CELL ASSEMBLY MAINTENANCE INSTRUCTIONS

This task covers:

a. Disassembly

c. Repair

b. Cleaning

d. Reassembly

INITIAL SETUP:

Tools:

Materials/Parts

Shop Equipment, Instrument and Fire Control:

Cleaning

Item 4,

Field Maintenance, Basic (SC 4931-95-A07)

Compound

Sealing

Item 8,

Compound

References:

TM 9-254

TM 750-116

Change 3