*TM-11-5821-284-34
NOTE
(8) Connector J1 is secured to the base
If it is necessary to remove phase
plate with a nut and shake washer.
f.
Removal of Gear Train Assembly A3. (FO 6-6)
discrim1nator board A2, unsolder and
(1) Remove access panel MP18 by
code all wires attached to the board.
loosening three screws MP18H3 and five screws
Remove four screws, lock-washers and
MP18H5.
not A2H4 that hold discriminator to
(2) Remove the screw, washer and rim
coupler assembly.
c. Removal of Coils L1 and L2.
clench clamp assembly MP7 that is next to base plate
(1) Remove core flux generator holders
MP20.
MP-16 and MP17 by loosening and removing four
(3) Remove the two screws and
screws, flat washers, and lockwashers MP54H.
lockwashers MP12H3 and the three screws and
(2) Remove plate L4 by loosening one
lockwashers MP12H3 that are attached to cover MP12
screw and lockwasher L4H1 and two screws MP23H1
(4) Remove cover MP 11 by loosening
and MP22H1 and then unsoldering the end of L4 from
four screws MPllH4 and two screws MP11H2.
antenna element MP13.
(5) Separate servo amplifier card A1 from
(3) Remove four screws MP5H4 and
backing plate MP21 by removing five screws A1H5 and
carefully position flux generator bracket MP5 away from
one screw A1H1. Nut and washer MP6H1 and loop
the base plate.
clamp
(4) Remove four screws and lockwashers
MP6 are attached to screw A1H1
MP2H4 and separate flux generator base MP2 from the
(6) Remove four screws MP21H4 from
base plate.
backing plate MP21 and carefully position backing plate
(5) Coil L1 or L2 is removed from flux
MP21 away from control motor B1.
generator base MP2 by removing two screws,
(7) Remove the remaining three screws,
lockwashers and flat washers L1 or L2H2.
washer, and rim clench clamp assemblies MP7 on
control motor B1.
NOTE
(8) Remove four screws A3H4 and
Capacitor A3C1 may be removed
lockwashers A3H6 and two screws A3H2 and
without gear tram assembly A3.
lockwashers A3H6 and separate gear train assembly
(1) Turn gear train until spring pin C1H1
from base plate MP20.
g. Disassembly of Gear Train Assembly A3.
1n the shaft of capacitor C1 can be removed.
(2) Place a piece of paper between a set
(1) Removal of gears MP6 and MP8.
of mating gears and remove spring pin C1H1.
(a) Use a pin punch to remove spring
(3) Slowly allow shaft of capacitor C1 to
pins MP6H1 and MP8H1
run into capacitor by holding a gear and removing paper.
(b) Slide drive shaft MP11 out of
(4) Loosen four screws and lockwashers
casting and remove hears MP6 and MP8 and shaft
C1H4 and separate C1 from casting.
e. Removal of Antenna Element Assembly.
space MP 13. The annular ball bearings MP1 and MP2
(FO 64)
are pressed into the casting
(1) Remove the solder between plug P1
(2) Removal of gear MP7 and shaft MP10.
and nut MP25H1 using a soldering iron
(a) Use a pin punch to remove spring
(2) Unscrew and remove plug P1 and nut
pin MP10H1.
MP25H1. Slide flat washer MP25H1 and teflon spacer
(b) Remove retaining ring MP10H1,
MP25 off the antenna element MP13.
slide shaft MP10 from casting, and remove gear MP7
(3) Loosen four screws MP5H4 in flux
and pinion spacer MP12 Annular ball bearings MP3 and
generator bracket MP5 and position the coreflux
MP4 are pressed into the casting.
generator holders MP16 and MP17 so toroidal cores E6
(3) Refer to paragraph 4-7d for removal of
and E7 can be removed from antenna element MP13.
capacitor A3C1.
(4) Unsolder plate L4 from antenna
(4) For reassembly instructions refer to
element and remove the excess solder.
(5) Cut lacing cord, unsolder the L3 wires,
4-8.
Assembly of Coupler Assembly
a. Replacement of Gear Train Assembly A3.
and slide toroidal core L3E1 from antenna element
(FO 6-6)
MP13.
(1) Position gear train assembly A3 on
(6) Unscrew core spacer MP24 from
base plate MP20, inserting the shaft of control motor B1
connector J 1.
through the hole in the casting that allows the shaft to
(7) Unsolder and remove antenna element
engage gear MP6 (fig. 4-1)
MP13
from
connector
J1.
4-7
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