Bell System Practices 28, Disassembly And Reassembly

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(8)
Refer to 2.02 reassembly note.
(9) If it is necessary to remake the Vertical Alignment of
a
Pivoted Sensing Head and Punch
adjustment, do not
replace the cable clamps and the 32-point connector until
the adjustment is completed.
2.05
Motor Unit
(1)
Refer to the section entitled 28 Motor Unit, Disas­
sembly and Reassembly Routines.
2.06
Tape-winder Drive Bracket Assembly
(1) Remove the four mounting screws, lockwashers, and
flat washers that secure the tape-winder drive bracket
to the base.
(2) Remove the bracket.
Cross Shaft Assembly 2.07
(1) Remove the screw and lockwasher that secure the
bearing clamp.
(2)
(3)
(4)
(5)
Remove the cross-shaft-bearing retaining screws,
washers, and nuts.
Remove the cross-shaft-driven-gear-hub mounting
screw and lockwasher.
Slide the cross shaft assembly sideways out of the
bearing seats.
Remove the cross shaft assembly.
2.08
(1)
(2)
Gear Bracket Assembly (Fixed or Shift Gears)
Remove the gear covers.
Remove the three gear-bracket mounting
washers.
Remove the gear bracket assembly.
Variable Features
screws and
(3)
2.09
(1)
Disassembly and reassembly routines for the variable
features is as specified in the sections covering the
disassembly and reassembly routines for the previously
mentioned components of the 28 reperforator-transmitter
unit.
C. 28A Reperforator-Transmitter Stand
Note: Before proceeding with the disassembly of the
stand, remove the tape-supply and take-up reels and
the intermediate tape storage bin. After reassembly,
route the tape as shown in Fig.
1
and thread the tape
onto the tape winder reel, fold the end of the tape, and
28 REPERF-TRANS SET,
UNIT, AND STAND
DIS·
ASSEMBLY
P34.420
AND RE-
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ASS EM BL Y