Figure 3-15. Removal and installation of relays (sheet 2 of 2)

TM 5-4120-356-14

REMOVAL OF TIME DELAY RELAY K3

1. REFER TO PARAGRAPH 3-10j FOR PRELIMINARY STEPS IN REMOVAL OF TIME DELAY RELAY K3.

2. REFER TO ABOVE INSTRUCTIONS AND REMOVE BRACKET (3) FROM JUNCTION BOX.

3. REMOVE NUT (19) AND WASHER (20) AND PULL RECTIFIER (21) AWAY FROM BRACKET (3). (NOTE: DO NOT

REMOVE ELECTRICAL LEADS FROM RECTIFIER.)

4. REMOVE FOUR SCREWS (8) AND NUTS (9) AND PULL RELAY (11) AWAY FROM BRACKET (3).

5. TAG AND UNSOLDER ELECTRICAL LEADS FROM RELAY (11).

INSTALLATION OF TIME DELAY RELAY K3

1. SOLDER ELECTRICAL LEADS TO APPROPRIATE TERMINALS ON RELAY (11). REMOVE TAGS FROM LEADS.

2. POSITION RELAY (11) ON BRACKET (3) AND SECURE WITH FOUR SCREWS (8) AND NUTS (9).

3. POSITION RECTIFIER (21) ON BRACKET (3) AND SECURE WITH WASHER (20) AND NUT (19).

4. REFER TO ABOVE INSTRUCTIONS AND INSTALL BRACKET (3) IN JUNCTION BOX.

5. REFER TO PARAGRAPH 3-10j FOR FINAL STEPS IN INSTALLATION OF TIME DELAY RELAY K3.

REMOVAL OF FAN RELAY K4

1. REFER TO PARAGRAPH 3-10k FOR PRELIMINARY STEPS IN REMOVAL OF FAN RELAY K4.

2. REFER TO ABOVE INSTRUCTIONS AND REMOVE BRACKET (3) FROM JUNCTION BOX.

3. TAG AND DISCONNECT ELECTRICAL LEADS FROM RELAY (13) .

4. TAG FOR POLARITY AND DISCONNECT DIODE (15) FROM RELAY (13).

5. REFER TO ABOVE INSTRUCTIONS AND REMOVE COMPRESSOR START RELAY K1 (6).

6. OPERATE SLIDE LATCH ON BACK OF RELAY COVER (12) AND REMOVE COVER FROM RELAY ( 13).

7. LOOSEN THREE SCREWS (14) AND REMOVE RELAY (13) FROM BRACKET (3) .

INSTALLATION OF FAN RELAY K4

POSITION RELAY (13) ON BRACKET (3) AND PLACE THREE SCREWS (14) IN MOUNTING SLOTS IN BASE OF

RELAY . SECURE RELAY TO BRACKET BY TIGHTENING SCREWS.

2. PLACE RELAY COVER (12) ON RELAY (13) AND SECURE WITH SLIDE LATCH ON BACK OF RELAY COVER.

3. REFER TO ABOVE INSTRUCTIONS AND INSTALL COMPRESSOR START RELAY K1 (6).

4. CONNECT DIODE (15) TO APPROPRIATE TERMINALS ON RELAY (13). MAKE SURE POLARITY IS CORRECT.

5. CONNECT ELECTRICAL LEADS TO APPROPRIATE TERMINALS ON RELAY (13). REMOVE TAGS FROM LEADS.

6. REFER TO ABOVE INSTRUCTIONS AND INSTALL BRACKET (3) IN JUNCTION BOX.

7. REFER TO PARAGRAPH 3-10k FOR FINAL INSTRUCTIONS ON INSTALLATION OF FAN RELAY K4.

REMOVAL OF FAN RELAY K5

1. REFER TO PARAGRAPH 3-10k FOR PRELIMINARY STEPS IN REMOVAL OF FAN RELAY K5.

2. REFER TO ABOVE INSTRUCTIONS AND REMOVE BRACKET (3) FROM JUNCTION BOX.

3. TAG AND DISCONNECT ELECTRICAL LEADS FROM RELAY (17).

4. REFER TO ABOVE INSTRUCTIONS AND REMOVE HEATER RELAY K2 (4).

5. OPERATE SLIDE LATCH ON BACK OF RELAY COVER ( 16) AND REMOVE RELAY COVER FROM RELAY (17).

6. LOOSEN THREE SCREWS (18) AND REMOVE RELAY (17) FROM BRACKET (3).

INSTALLATION OF FAN RELAY K5

POSITION RELAY (17 ) ON BRACKET (3) AND PLACE THREE SCREWS ( 18) IN MOUNTING SLOTS IN BASE OF

RELAY . SECURE RELAY TO BRACKET BY TIGHTENING SCREWS.

2. PLACE RELAY COVER (16) ON RELAY (17) AND SECURE WITH SLIDE LATCH ON BACK OF RELAY COVER.

3. REFER TO ABOVE INSTRUCTIONS AND INSTALL HEATER RELAY K2 (4).

4. CONNECT ELECTRICAL LEADS TO APPROPRIATE TERMINALS ON RELAY (17). REMOVE TAGS FROM LEADS.

5. REFER TO ABOVE INSTRUCTIONS AND INSTALL BRACKET (3) IN JUNCTION BOX.

6. REFER TO PARAGRAPH 3-10k FOR FINAL STEPS IN INSTALLATION OF FAN RELAY K5.

Figure 3-15. Removal and installation of relays (sheet 2 of 2)

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