CHAPTER 3 REPAIR INSTRUCTIONS - TM-9-1240-369-340064

TM 9-1240-369-34

CHAPTER 3

REPAIR INSTRUCTIONS

Section I. GENERAL

replacement is indicated by visual inspection and/or

3-1. Scope.

troubleshooting.

This chapter contains detailed instructions for

the repair of the laser range finder. Repair instructions

3-2. Parts Replacement.

consists of step-by-step procedures for replacement of

faulty components within the laser range finder units.

In subsequent paragraphs authorized parts

damaged beyond repair are to be replaced.

GS repair instructions. The requirement for component

Section II. REPAIR OF R/T CONTROL C-8728/VVG-1 (A75)

(1) Remove nine screws (1), nine washers (2) and

3-3. Disassembly of R/T Control unit (A75).

carefully ease cover assembly (3) from the housing.

The R/T control unit is to be disassembled only to the

(2) Rotate cover seal (4) so that the seal can be

point where the damaged component can be removed

removed by sliding over the cover assembly (3) and wire

and replaced. During disassembly, it is recommended

connections.

that disassembled items be indexed in order of removal.

(3) Lubricate new cover seal (4) by applying a thin,

Assembly can then be accomplished by replacing items

uniform, film of grease, MIL-G-4343 to the high point on

in reverse index order. After any repair. the R/T control

the bead of the cover seal. Do not apply so much

unit must b)e purged with dry nitrogen gas in accordance

grease that it fills the grooves on either side of the bead.

with TM 9-2350-230-12.

Apply by hand to both sides of the cover seal.

a. Replacement of Cover Seal (see fig. 3-1).

(4) Install new cover seal (4) by performing steps (1)

and (2) in reverse order.

CAUTION

There are wire connections between

the housing and the switches on the

cover assembly.

Remove cover

assembly away from the housing

carefully.

3-1