BOTTOM HOUSING ASSEMBLY AND RELATED PARTS DISASSEMBLY

TM 9-1290-335-34&P

4-27.

BOTTOM HOUSING ASSEMBLY AND RELATED PARTS DISASSEMBLY

TOOLS:

1/8" and 5/16': drive pin punch

1/4" flat tip screwdriver

Machinist scriber

5/32" socket head screw key (Allen wrench or equivalent)

4 oz. ball peen hammer

PERSONNEL: One

EQUIPMENT CONDITION: Azimuth indicator on work bench

FRAME 1

Step

Procedure

Using scriber, draw a scribe mark on collar (1), shaft (2), and flange (3).

Using 5/16" punch and hammer, drive out pin (4) far enough to remove collar (1). Remove collar.

Remove anti-backlash gear assembly (5), (6) and (7) from shaft (2).

Slide shaft (2) out of sleeve bearing (8).

Using screwdriver, disassemble anti-backlash gear assembly by prying apart gears (5) and (6) and

spring (7).

Look at pin (4), gears (5) and (6) and torsion spring (7). If gears (5) and (6) are changed in shape

or have missing or broken teeth, replace gear. If pin (4) or torsion spring (7) is changed in shape,

replace pin or spring.

GO TO FRAME 2

Vol II

Para 4-27

4-35