DISASSEMBLY - TM-9-4931-710-14-P0035

TM 9-4931-710-14&P

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

DISASSEMBLY - CONTINUED

NOTE

Authorized to use and repair tritium models

but cannot procure a new one.

If tritium ID label is lost (or light source fails)

or radioactive ID plate is lost or needs to be

replaced, convert device to an A1 model.

Remove tritium light source and replace it

with ERLS light source, and new ID plate.

WARNING

The cap assembly contains

tritium gas (H3). A radiation

hazard will exist if a light

source is broken.

When maintaining alinement

device, follow radiation

hazard procedures on

warning page.

C Remove two screws (11), two washers (12), and

instruction plate (13).

D Remove cap assembly (14 or 14.1) and packing

(15) from battery pack. Discard packing.

E Remove two screws (16), two washers (17), and

identification plate (18).

F Peel off instruction plate (19) and decal (20).

Change 3

5-9