Section I. GENERAL
replacement is indicated by visual inspection and/or
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
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.
There are wire connections between
the housing and the switches on the
assembly away from the housing