Disassembly Instructions

TM 11-6125-261-30

a. To disassemble the basic assembly, proceed as follows:

(5) Remove filter (20) from front assembly.

(1) Remove 20 screws (5) from rear cover (6).

(6) Remove two screws (12), lockwashers (13), and flat

(2) Remove rear cover.

washers (14) from terminal cover (11), and remove terminal

cover.

CAUTION

(7) Mark and disconnect wires attached to filter.

Wires are connected to front cover via filter

c. To disassemble pulser assembly Al proceed as follows

(20) and fan (10). Do not force cover as damage

(item numbers below refer to figure 3-3 sheets 1 and 2

to wire or connections may result.

unless otherwise indicated):

(1) Mark and disconnect wires to inductors L2-L10

(3) Remove 12 screws (5) and 8 screws (19) from front

(2).

cover (17).

(2) Remove 9 screws (24) from pulser chassis.

(4) Remove 6 screws (5) from top of inverter.

(3) Mark (schematic reference designation) and remove

(5) Remove 6 screws (21) from bottom of inverter.

inductors L2-L10.

(4) Mark and disconnect the cable from the capacitor

CAUTION

assembly (12).

Wires are connected from the pulser assembly

(5) Remove 6 screws (19) from pulser chassis.

to the inverter assembly. Caution must be

(6) Remove capacitor assembly.

taken not to break them when separating the

units.

(6) Separate pulser assembly (2) from inverter assembly

NOTE

(8).

The following portion of this procedure is to

(7) Remove front cover.

disassemble transistors Q1-Q14 (3, 4, and 5, fig.

(8) Remove side covers (1 and 7) by gently prying

3-3). Instructions will be given to disassemble

outward at one corner of the cover.

one transistor. If more than one transistor is to

(9) Mark and disconnect cable terminations at L1-1

be removed, repeat this procedure for each

and L1-2 by removing one screw (4) and one nut (3) for

transistor.

each cable.

b. To disassemble front cover assembly, proceed as

(7) Mark and disconnect wires that attach the base

follows (fig. 3-2):

and emitter of the transistor being removed, to the circuit

(1) Remove 4 screws (12), lock washer (15) and flat

board (10).

washers (16) from front cover assembly (17).

(8) Remove the two nuts (14) on the outside of the

(2) Remove fan (10) from front cover assembly.

transistor.

(9) Remove transistor from the chassis (11).

(3) Mark and disconnect wires attached to fan.

(10) Remove the transistor insulator (15 or 25) from

(4) Remove 8 screws (18) and lock washers (13) from

the transistor.

front cover assembly.

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