SECTION VIII. REPAIR AND OVERHAUL INSTRUCTIONS

T.O. 12P4-2APX-142

NAVAIR 16-35C6280-1

TM 11-5841-268-25

SECTION VIII

REPAIR AND OVERHAUL INSTRUCTIONS

8-1. GENERAL.

two screws, nuts, and washers (27, 28, 29, FO4). Remove

panel assembly.

82. This section describes the procedures for repairing

and overhauling Control, Transponder Set C-6280(P)/APX,

Step 4. When repair or replacement has been completed,

C-6280A(P)/APX, C-6717/APX, and C-7483/APX. Unless

reverse the procedures in Steps 1, 2, and 3 to reassemble

otherwise indicated, the procedures apply to all the trans-

rear panel assembly.

ponder set controls. The disassembly and reassembly proce-

8-7. REPAIR AND REPLACEMENT OF CONNECTOR

dures are keyed to the exploded views, FO3, FO4, and

J201.

FO5. (Air Force, Navy) For complete part identification,

refer to the parts lists in Section X, which are also keyed to

88. GENERAL. When any of the contact pins or the con-

the exploded views. (Army) Refer to TM 11-5841-268-25P

tact receptacle of J201 (23, FO3; 25, FO4; 22, FO5)

for parts identification.

has been damaged, the connector should be repaired or re-

placed as outlined in paragraphs 89 through 812. When

8-3. REPLACEMENT OF PLASTIC LIGHT PANEL.

one or more pins are replaced, the wire or wires must be

8-4. To remove and replace the plastic light panel, proceed

connected to the pins as described in paragraph 810. To

as follows:

provide access to the connector and wires, remove the rear

panel assembly (paragraph 86). Replace the rear panel as-

Step 1. Loosen setscrews (6 and 8, FO3, FO-4, FO5)

sembly when the repair or replacement has been completed.

in control dials (5 and 7) and remove control dials. "

89. CONTACT PIN REMOVAL. With connector J201 ac-

Step 2. Center all toggle switch handles.

cessible (paragraph 86), use extraction tool MS24256R20,

Step 3. On C-6280(P)/APX and C45280A(P)/APX, un-

or equivalent, and remove contact pin as follows:

screw and remove five panel light holders (9, FO3, FO4).

Step 1. Set spacer sleeve of tool for removal of male con-

Step 4. On C-6280(P)/APX, C-6717/APX, and C-74831

tacts.

APX, remove four screws (12, FO3; 10, FO5). On C-6280

Step 2. Place tool over pin and insert tool into pin cavity,

A(P)/APX, remove four screws (12, FO-4), nuts (13), and

taking care not to damage pin or connector insert.

washers (14).

Step 3. Exert a moderate force (from 5 to 10 pounds)

Step 5. On C-6717/APX and C-7483/APX, disconnect

axially to tool to release retention collet. (Spacer sleeve

P201 (part of light panel) from connector J202 (45, FO5).

should shoulder at face of insulation when tool is inserted

Step 6. Gently lift off light panel (11, FO3, FO4;

to proper depth.)

9, FO5).

Step 4. Push extraction plunger of tool so that pin is

Step 7. To install light panel, reverse procedures in Steps

moved to rear of insert.

1 through 6.

Step 5. Grasp pin or wire at rear face of insert and pull

8-5. REMOVAL AND REPLACEMENT OF REAR PANEL

out pin.

ASSEMBLY.

Step 6. Remove extraction tool from connector and set

86. To remove and replace the rear panel assembly, pro-

spacer sleeve of the tool forward in the last notch to protect

ceed as follows:

the end of the plunger guide.

Step 1. Loosen two turnlock fasteners on rear of unit and

810. CONNECTION OF WIRE TO CONTACT PIN. When

remove dust cover (1, FO3, FO-4, FO5).

a pin has been damaged, remove pin (paragraph 89) and

loosen crimp with pliers to remove wire. When a wire is

Step 2. Remove four screws and washers (18 and 19,

broken or damaged, strip insulation 3/16-inch from end of

FO3; 20 and 21, FO4; 17 and 18, FO5). On C-6280A

wire (avoid nicking the wire or damaging the insulation).

(P)/APX, also remove two screws (26, FO4). Move panel

Use crimping tool M1700A with MS3190 head, or equiva-

assembly (17, FO3; 19, FO4; 16, FO5) away from

lent, to crimp the new pin to the wire.

chassis.

811. CONTACT PIN INSERTION. To insert contact pins

Step 3. On C-6280(P)/APX, C-6717/APX, and C-7483/

in J201, use insertion tool MS24256A20, or equivalent, and

APX, remove four screws, nuts, and washers (24, 25, 26,

FO3; 23, 24, 25, FO5). On C-6280A(P)/APX, remove

proceed as follows:

8-1