Replacement. - TM-11-5820-695-350336

TM 11-5820-695-35

securing connector 2A15W2J1 to preselector support,

diode amplifier 2A2 by rotating the knurled connector on

then remove connector and replace hex nut on

coaxial cable 2A15W1 in a counterclockwise direction.

connector (fig. 3-19).

(5) Loosen the four captive screws (fig.

(16) Remove two nuts on the left side and

818) securing tunnel diode amplifier 2A2 to its mounting

two nuts on the right side of preselector support securing

bracket a few turns each.

preselector support to electrical equipment cabinet 2A15

(6) Disconnect the knurled connector

and remove preselector support.

INPUT J1 on tunnel diode amplifier 2A2 from its mating

(17) Remove power supply 2A1 from

connector on preselector bandpass filter 2FL4 by

electrical equipment cabinet 2A15 (para 340(4) and (5)).

rotating the knurled connector clockwise.

(18) Tag, unsolder, and remove the wires

(7) Remove the four captive screws

connected to power transformer 2A15W4T1 terminals.

securing tunnel diode amplifier 2A2 to its mounting

Care should be taken not to put stress on the cable

bracket.

harness wires.

(8) Slide tunnel diode amplifier 2A2 back

(19) While supporting power transformer

and to the right, then forward being careful not to put

2A15A4T1, remove the four nuts and washers securing

stress on the power cable connected to the rear of 2A2.

2A15A4T1 to its mounting bracket and then remove

(9) Disconnect power cable 2A15W2P2

2A15A4T1 from electrical equipment cabinet 2A15.

from the POWER J3 connector (locater at the rear of

Replacement.

2A2) by rotating the connector 1/2-turn clockwise (as

viewed from front of 2A2) and remove tunnel diode

(1) Mount replacement power transformer

amplifier 2A2 from the cabinet.

2A15A4T1 on its four mounting studs in electrical

equipment cabinet 2A15.

(10) Remove eight input waveguide flange

screws (fig. 3-20) securing external input waveguide

(2) While supporting power transformer

section to waveguide flange on preselector bandpass

2A15A4T1 flush against the transformer mounting

filter 2FL4.

bracket, replace and tighten the four nuts and washers

securing power transformer 2A15A4T1 in place.

NOTE

CAUTION

After removing the six screws (step a

Exercise care while soldering the

(11) below); obtain a thin sheet of

cable harness leads to the power

rigid material about 1/16th inch thick

transformer terminals to prevent

and insert this material between the

damage to the cable harness leads or

top of the cabinet and the input

the power transformer terminals.

waveguide section to support the

input waveguide section when

(3) Solder the wires removed in step

preselector bandpass filter 2FL4 is

a(18) to power transformer 2A15A4T1 terminals.

being removed.

(4)

Replace power supply 2A1 (para 3 0g

(11) Remove six 2FL4 flange screws (fig.

(4) and (6'5)).

3-20) securing preselector bandpass filter 2FL4 to the

(5) Place preselector support in electrical

top of electrical equipment cabinet 2A15.

equipment cabinet 2A15 aligning all mounting holes.

(12) Remove two bolts and washers (fig.

Then secure preselector support to electrical equipment

318) securing lower part of preselector bandpass filter

cabinet 2A15 using hardware removed in stepai (16).

2FL4 to electrical equipment cabinet 2A15 preselector

(6) Secure tunnel diode amplifier 2A2

support and remove preselector bandpass filter 2FL4.

mounting bracket to preselector support using hardware

(13) Remove 2A16W1P1 from 2A15W2J1

removed in step a(14).

(fig.

318) on electrical equipment cabinet 2A165

(7) Remove hex-nut from connector

preselector support by rotating the knurled connector on

2A15W2J1 and insert through mounting hole on

2A16W1P1 counterclockwise.

preselector support; then secure connector 2A15W2J1

(14) Remove two nuts, washers and bolts

to mounting bracket with the hex-nut.

securing tunnel diode amplifier 2A2 mounting bracket to

(8) Connect 2A16W1P1 to connector

electrical equipment cabinet 2A16 preselector support.

2A15W2J1 on preselector support.

(15) Remove

the

mounting

hex

nut

3-68