Fuse Replacement (1973 Model Only)

TM 11-6130-377-14

(5) Install the screen assembly over the

washer over the other end of the fuse link and bend link

down over washer, replace end cap.

retaining frame and gently push it in place.

(6) Install the fuse into the holder using the

(6)

Ensure the fan blades are clear of the filter.

fuse puller or a suitable tool.

b. Base Subassembly Mounted Air Filter.

(7) Close the front indicator panel and secure

remove or replace the air filter mounted in the base

the four turn fasteners.

subassembly (fig. 2-1), proceed as follows:

c. Standard One-Time Fuses. To remove or replace

(1) Remove four screws and lockwashers

fuse A1F1 proceed as follows:

securing the heat sink inlet panel to the base

subassembly and remove the inlet panel.

(1)

Position DC circuit breaker to OFF.

(2) Reach through the opening and pull the air

(2) Open front indicator panel to gain access to

filter out of its retaining frame.

fuse A1F1, located in the fuse holder mounted on the

underside of the shelf to the left of the heat sink duct (fig.

(3) Guide cleaned (para 4-14) or replacement

2-1).

air filter into the retaining frame and push the filter in until

it bottoms on the frame.

(3) Using a fuse puller or suitable tool remove

the burned out fuse from the fuse holder.

(4) Install the heat sink inlet panel in position

on the base subassembly and secure with four

(4) Install a new fuse into the fuse holder using

lockwashers and screws.

a fuse puller or suitable tool.

4-16. Fuse Replacement (1973 Model Only)

(5) Close the front indicator panel and secure

the four turn fasteners.

CAUTION

4-17. Indicator Lamp Replacement

If replacement fuse burns out,

do not

insert another fuse, notify

higher

To remove and replace a burned out DC or AC ON

echelon maintenance. Never

use a

indicator lamp proceed as follows:

fuse with an amperage rate

higher

a. Position the DC circuit breaker A1CB1 to OFF.

than the equipment calls for.

b. Unscrew the lens cap of the indicator light to gain

a. Fuses. Fuses shall be Bussman (LKN-60, 250V)

access to the burned out lamp.

Fuse Renewal Links or an equivalent (Bussman NON-60

c. Remove the faulty lamp by pressing in on bulb

Fuse). Use the appropriate procedure given in b or c

and turning to release bayonet base.

below to remove or replace a fuse.

d. Install a replacement lamp into the light assembly

b. Renewal Link Fuses. To remove or replace the

by pressing in on bulb and turning to engage bayonet

fuse link proceed as follows:

base.

(1)

Position DC circuit breaker to OFF.

e. Screw the lens cap on the light assembly finger

(2) Open the front indicator panel to gain

tight.

access to fuse A1F1, located in the fuse holder mounted

f. Check lamp operation by performing equipment

on the underside of the shelf to the left of the heat sink

starting procedure (para. 3-3).

duct (fig. 2-1).

4-18. Organizational Troubleshooting Chart

(3) Using a fuse puller or suitable tool remove

the fuse from the fuse holder.

The troubleshooting chart below is provided to aid the

organizational repairmen to localize troubles in the

(4) Remove both end caps from the fuse body

inverter at organizational levels. To use the chart read

and discard the burned out link.

down the trouble symptom column to locate the abnormal

(5) Install a replacement link into the fuse body

indication and then perform the corrective measures.

and through the slot in the fixed end. Bend the end of the

fuse link over and replace the end cap. Install the slotted

Item

No.

Trouble symptom

Corrective measures

A blown input fuse A1F1 (1973 model only) ...........................Replace blown fuse (para 4-16).

Notify general support maintenance if replacement fuse blows.

DC ON indicator light does not illuminate ..............................Replace burned out lamp (para 4-17).

AC ON indicator light does not illuminate...............................Replace burned out lamp (para 4-17).

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