Bell System Practices 28, Разборка и сборка

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2. DISASSEMBLY AND REASSEMBLY
A. 28 Reperforator-Transmitter Set
2.01 To disassemble a 28 reperforator-transmitter set,
remove the 28 reperforator-transmitter unit from the
28A reperforator-transmitter stand as follows:
(1) Remove the tape-winder drive belt from the tape-winder
drive pulley.
(2) Disconnect all plugs from their connectors located on
the frame of the reperforator-transmitter stand.
(3) Loosen the three captive screws that secure the unit
to the stand.
(4) Lift the unit from the stand.
B.
28
Reperforator-Transmitter Unit
2.02 Nontyping Reperforator If So Equipped
(1)
Refer to the section entitled 28 Nontyping Reperforator,
Disassembly and Reassembly Routines.
Reassembly Note: After remounting a typing or non­
typing reperforator or a transmitter-distributor,
check the interrelated adjustments contained in the
section entitled 28 Reperforator-Transmitter Unit
and Set, Requirements and Adjustments.
2.03 Typing Reperforator If So Equipped
(1)
Refer to the section entitled 28 Typing Reperforator,
Base,
and Cover, Disassembly and Reassembly
Routines.
2.04
(1)
(2)
(3)
(4)
Reassembly Note: Refer to 2.02 reassembly note.
Transmitter-Distributor
Disconnect the line shunt cable connectors.
Remove the two screws that secure the two transmitter­
distributor cable clamps.
Remove the mounting screws that secure the 32-point
connector.
Remove the
the base.
transmitter-distributor gear guard from
(5) Remove the three mounting screws that secure
transmitter-distributor to the base.
the
(6) Lift the transmitter-distributor from the base.
(7)
If it is necessary to disassemble the unit, refer to the
section containing the disassembly and reassembly
routines for the 28C transmitter-distributor.
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