TM 11-5895-1090-34/TO 31 R2-2TSC-152
the input shf channel assembly jack to the front panel.
a. Loosen, but do not remove, the two screws
l.
When removing either channel 2 or 3,
securing the power combiner (power divider) to the
frame.
remove the two screws securing the LEVEL ADJUST
CAUTION
shaft to the channel assembly. Remove shaft.
m. Loosen the two captive screws securing the
In the next step throughout the
assembly to the bottom of the combiner chassis. Slide
procedure, be careful not to bend the
back and remove shf channel assembly.
semirigid coaxial cabling in the shf
n.
Install new shf channel assembly into
channel combiner assembly.
b.
Alternately loosen each of the four
place in the combiner chassis. Secure to bottom of
chassis by tightening the two captive screws on the shf
semirigid coaxial cables (W1-W4) which are connected
channel assembly.
to the isolators on the shf channel assemblies A1A1-
o. Replace lockwasher and tighten hex nut on
A1A4.
c. When all four have been completely un-
input shf channel assembly jack connector on the front
threaded, push back on the power divider until the
panel.
p. When replacing either channel 2 or 3,
semirigid coaxial cables are freed from the isolators.
d.
Loosen the connection to the power divider
replace LEVEL ADJUST shaft. Secure to shf channel
of the semirigid coaxial cable that corresponds to the shf
assembly by tightening the two mounting screws.
q. Tighten on hex nut LEVEL ADJUST shaft
channel assembly being replaced and swing the
semirigid coaxial cable out of the way.
on the front panel.
e. On the shf channel assembly to be
r.
Replace knob lock and tighten it finger
replaced, alternately loosen and remove the two ends of
tight on threaded LEVEL ADJUST shaft.
the BITE semirigid coaxial cable (W5-W8), and connect
s. Gently turn the knob lock control
between the rear of the shf channel assembly and the
counterclockwise until the mechanism is in the unlocked
coaxial switch.
position. Take care not to unscrew the knob lock
f.
Loosen both captive screws securing the
assembly from the threaded shaft.
t.
appropriate brace which is attached between P 1A1 and
Replace knob so that it is in close proximity
A1A2 or A1A3 and A1A4; and remove it from between
but not touching the soft rubber gasket of the knob lock.
the modules. Remove the brace.
Tighten the two setscrews.
u.
g. On the front panel, remove the two
On the front panel, replace the mounting
setscrews on the level adjust knob and remove the
screw, and secure the shf channel assembly to the front
knob.
panel.
CAUTION
v. Replace the brace between the new shf
In the following step, use care not to
channel assembly and the adjacent assembly, and
damage the soft rubber gasket or the
tighten the two captive screws to secure it in place.
w.
rubber coating on the hex nut.
If
Using a torque wrench, replace and
damaged, the knob lock must be
alternately tighten both ends of the BITE semirigid
replaced.
coaxial cable (W5-W8).
h.
With one hand push in on the knob lock,
and, by using the tip of a 1/2 inch open-ended wrench,
the four semirigid coaxial cables to the isolators on the
remove knob lock by turning the hex nut and plastic ring
shf channel assemblies.
Also, make sure all
counterclockwise.
connections to the power divider are tight.
i.
y. Tighten the two captive screws to secure
Remove the screw which secures the shf
channel assembly frame to the front panel.
the power divider to the shf channel combiner.
j.
Remove the hex nut, securing the level
adjust shaft to the front panel.
k. Remove the hex nut and lock washer,
securing
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