TM 11-6625-3053-14
REPLACEMENT
a. Remove the silver-plated spring from its core and replace with new spring which comes with the klystron
tube.
b. Replace spring and core into cavity, followed by the spacer.
c.
Insert new klystron tube straight into the klystron cavity barrel. Do not use excessive force. Slowly rotate the
tube clockwise as you push forward. You will meet resistance when the resonator ring meets the circular
spring teeth of the cavity inner conductor. Continue rotating the tube while pushing the tube forward until it
jumps forward and seats.
d. Remount klystron knurled nut and tighten as much as possible by hand. Complete by tightening nut with
adjustable wrench while exercising caution as not to break glass envelope of the klystron tube.
e. Reconnect socket to klystron tube pins.
f.
Remount klystron cover into cavity end and tighten clamp.
g. Turn Beam Current Adjust pot on tracking board of A4 assy fully counterclockwise.
h. Perform Alinement step 5.
6-27.
REMOVAL
a. Remove instrument dust cover (para 6-20).
c.
Then remove exterior screw holding CR1 to rear panel.
d. Unsolder leads from the four terminals and identify.
e. Remove CR1.
REPLACEMENT
a. Slip 5/8 inch length insulated sleeving on each of the loose wires going to CR1.
b. Solder wires to new CR1 according to step d above.
c.
Slide insulated sleeving toward CR1 over solder joint.
d. Remount CR1 to rear panel.
f.
Replace instrument dust cover (para 6-20).
6-28.
a. Remove instrument dust cover (para 6-20).
c.
Swing up Al card assembly by removing 2 screws at rear.
d. Remove 4 screws holding plate on which Q1 & TP1 are mounted. Peel back plate.
e. Remove 4 screws holding T1 to main frame floor.
f.
Unsolder wires from transformer terminals, preserving their general location and special conditions, such as
twisted pairs and identify.
g. Remove transformer.
6-89