d. Using a drift punch, drive the pins (9) from the
Lubricate by applying small amounts of silicon grease
drive gear (22) and the spur gear (23). Loosen the hex
(FSN 9150-257-5358) or any approved alternate, to gear
setscrews (10) on both gears.
e. Remove the four hex nuts (11), screws (12), flat
washers (18), and spacers (14) that secure the switch
3-10. Removal of Gear Drive Assemblies
wafer (15) to the top plate (16).
To remove the gear assemblies from tray A1A1 (fig. 3-
f. Remove the six bottom plate screws (17),
through c below.
spacers (20), and remove the bottom plate (21).
a. Remove the bottom cover from the appropriate
g. Slide the drive gear (22), spur gear (28), and
tray, tag and unsolder the wires connected to gear drive
switch gear (6) from their shafts.
h. Slide the switch shaft (24) from the wafer switch
upward through the top plate.
Note. Before proceeding to b below
for tray A1A3, perform the following:
Note. For the gear drive assembly
when removed from tray A1A1,
(1) Remove the setscrews from the motor
proceed as in (1) and (2) below.
(2) Remove the coupler from the shaft.
(1) Remove the four screws (25) holding to
the top plate. Slide the coupler (26) and
b. Remove the four top panel mounting screws
connected shaft upward from the adapter
(fig. 3-3) that secure the gear drive assembly to either
tray A1A1 or tray A1A8. Lower and rotate the gear drive
(2) Drive the coupler pin (28) from the shaft
assembly outward for access.
with a drift punch.
Loosen the hex
setscrew (29), and remove the coupler
Note. If the gear drive assembly Is to
be removed from the parent tray
i. Remove the two hex nuts (81) and screws (32)
intact, proceed with c below;
securing the channel motor mount (88) and connected
however, if the disassembly of the
components from the top plate.
gear drive assembly is the final
j. Drive the pin (34) from the worm gear on the
objective, proceed a outlined in
channel motor mount with a drift punch, loosen the hex
setscrew (35), and slide the worm gear (36) from the
c. Tag and unsolder the 28 wires connected to
k. Tag and unsolder the wires connecting the
switch S1 (fig. 3-3), and remove the gear drive
channel motor to relay K1 (37).
(39), and four flat washers (40) securing the motor to the
3-11. Disassembly of Gear Drive Assemblies
channel motor mount. Remove the channel motor (41).
To disassemble the gear drive assembly after removal
m. Remove the two hex nuts (42) and screws (43)
securing the relay to the channel motor mount. Remove
ring (1) from the idler gear shaft (2). Slide the Idler gear
3-12. Reassembly of Gear Drive Assembly
(3) off the shaft (2).
b. Remove the two retaining rings (4) from the
a. Fasten the adapter bearing (27), using the four
switch shaft, and loosen the hex setscrew (5) on the
screws (25), to the top plate (16).
switch gear (6).
b. Slip the coupler (30) on the spur gear shaft (8),
c. Remove the two retaining rings (7) from the
driving the coupler pins (28) Into the appropriate pin
spur gear shaft (8).
holes. Tighten the hex setscrew (29). Slide the spur
gear shaft (8) through the hole in the top plate (16)