Section III. MAINTENANCE PROCEDURES - TM-9-4931-710-14-P0033

TM 9-4931-710-14&P

Section III. MAINTENANCE PROCEDURES

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

This task covers:

a. Disassembly

c. Repair

b. Cleaning

d. Reassembly

INITIAL SETUP:

Tools:

Materials/Parts Continued:

Shop Equipment, Instrument and Fire Control:

Sealing

Item 8,

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

Compound

Appendix D

Shop Equipment, Instrument and Fire Control

Packing

P/N MS9021-024

System Repair: Field maintenance (SC 5180-

95-B29)

Packing

P/N MS9021-026

References:

Materials/Parts:

Alcohol

Item 1, Appendix D

Page 5-5

Base does not seat

properly

Bag, Plastic

Item 2, Appendix D

Page 5-5

Lens fogged or

Brush

Item 3, Appendix D

condensation present

Cleaning

Item 4, Appendix D

Page 5-5

No illumination

Compound

Page 5-6

Illuminated, but no reticle

Enamel

Item 5, Appendix D

pattern

Grease

Item 6, Appendix D

TM 9-254

Paper, Lens

Item 7, Appendix D

TM 750-116

General Safety Instructions:

WARNING

Read and follow all WARNINGS in the WARNING

When maintaining the alinement device, follow

SUMMARY in the front of this manual. Pay careful

radiation hazard procedures on warning page.

attention to those concerning Lithium Batteries.

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