REASSEMBLY - TM-9-4931-710-14-P0037

TM 9-4931-710-14&P

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

REASSEMBLY

NOTE

Authorized to use and repair tritium

models, but cannot procure a new

one except for light source and ID

label. If tritium ID label is lost (or

light source fails) or radioactive ID

plate is lost or needs to be replaced,

convert device to a A1 model.

Remove tritium light source and

replace it with ERLS light source,

and new ID plate.

CAUTION

Stamp data on plates prior to

installation. Stamping mounted

plates could dent body, rendering

it unserviceable.

NOTE

A Stamp plate (1).

Transfer serial number, month

and year of manufacture, and

B Install plate (1), two washers (2), and

identification code of original

two screws (3).

manufacturer of alinement device

to new plate, if replacement is

C Cover screws (3) with sealing com-

required.

pound (Item 8, Appendix D).

Change 3

5-11