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TM 750-116
Figure 3-51 Night Sight Cover Actuator
Handle/Support
(c) Perform purging and charging procedure para
2-5.b.
(d) Remove outlet port screw and discard.
(e) Purge instrument at 4 psig for 3-5 minutes or
until all visible traces of moisture are gone.
(f) Apply thin coat of lubricant (item 3, appx B) to
o-rings of replacement outlet port screw and install.
(g) Torque outlet port screw to 10-12 in-lb (12-14
cm kg).
(h) Charge instrument at 4 psig for 10 minutes.
(i) Leak test instrument for minimum of l0 minutes.
If leak is detected, repair per table 3-2.
Table 3-2 Leak Test, Commander’s Relay
Assembly
Part leak
Manual re-
Manual re-
detected from
ferred for M2,
ferred for
M3, M2A1, and
M2A2 and
M3A1 vehicles
M3A2 vehicles
valve assembly
TM9-2350-252-
TM9-2350-284-
20-2-3
20-2-3
commander’s
TM9-1425-474-
TM9-1425-453-
eyepiece assem-
34-1 (M2/M3)
34-1
bly
TM9-1425-453-
34-1 (M2A1/
M3A1)
all other parts of
DMWR
DMWR
commander’s
9-1240-394
9-1240-399-1
relay asembly
(M2, M3)
DMWR
9-1240-399-1
(M2A1, M3A1)
(j) For M2A2 and M3A2 only, apply primer item 4,
appx B) and sealing compound (item 5, appx B) to threads
of two screws. Position shim(s), night sight cover actuator
handle/support and install two washers and screws.
(k) Close and secure gunner’s hatch cover per
TM 9-2350-252-10-2 (for M2, M3, M2A1, and M3A1
only) or TM 9-2350-282-10-2 (for M2A2 and M3A2
only).
b. 8635466 Infinity Sight (fig. 3-52).
NOTE
Infinity sights 8635466 are identified as early
and late production models. The procedures for
purging and charging apply to later production
models only.
Figure 3-52 8635466 Infinity Sight
3-23
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