EQUIPMENT ISSUED WITH PERISCOPE XM48
Section I. DESCRIPTION
assembly 6650-907-9680, housing 8589902,
a.(Equipment used with periscope XM48
is secured to the front of mount assembly
includes mount assembly 6650-906-7944, seal
6650-906-7944 and is used for mounting the
assembly 10513439, washer, pump, and reser-
combination housing and headrest assembly
voir assembly 8589793, wiper assembly 1051
3436, and headrest assembly 6650-907-9679.
This chapter provides repair instructions for
headrest assembly. Repair instructions for the
mounting grips, one for securing the housing
other equipment supplied with periscope XM
to the slide and one for securing headrest
48 are provided in TM 9-6650-221-35 peri-
assembly 6650-907-9680 to the housing. The
housing mounting grip controls a spring-load-
scope, tank, XM47.
b. Headrest assembly 6650-907-9679 is se-
ed plunger that engages a hole in the slide
when the housing is positioned on the slide.
cured to mount assembly 6650-906-7944 with
The headrest mounting grip controls a spring-
two machine screws and provides a padded
rest for the operator's forehead when viewing
loaded plunger that engages a hole in the
support of headrest 6650-907-9680 when the
the binocular tubes of periscope XM48. The
headrest is adjustable to fit the operator's
headrest assembly is mounted to the housing.
forehead position through a swivel mounting
c. Headrest assembly 6650-907-9680 (fig.
of headrest 10513499 which
attached to a mounting support through a
6-2. Description of Headrest Assembly
swivel arrangement. Swivel 10513498 is a ball
swivel that is controlled for tightness by the
position of knob 10511395 to permit position-
a. Headrest assembly 6650-907-9679 is a
three-piece assembly that consists of headrest
ing of the headrest.