COIL (SOLENOID VALVE)

TM 9-4120-425-14&P

COIL (SOLENOID VALVE)

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THIS WORK PACKAGE COVERS:

Test, Removal, and Installation

INITIAL SETUP:

Maintenance Level

Unit

Tools and Special Tools

Tool Kit, General Mechanics (Item 1, Table 2, WP 0118-00)

References

Schematic Diagram, WP 0122-00

Test Equipment

Multimeter

Equipment Condition

Air conditioner shut down and cool.

Power disconnected from unit.

Rear top cover removed (WP 0018-00 and WP 0019-00).

WARNING

Disconnect air conditioner power supply.

TEST

Using multimeter set on the lowest OHMS scale, check for continuity between leads of coil. If continuity is not

found, coil is open and must be replaced.

Using multimeter set on lowest OHMS scale, check for continuity between each lead and coil casing. If continuity is

found between either lead and the casing, the coil is grounded and must be replaced.

REMOVAL

Tag and disconnect wires connected to solenoid valves (1) and (4).

Remove spring clips (3) and (6) and coils (2) and (5).

INSTALLATION

Install coils (2) and (5), with spring clips (3) and (6) onto solenoid valves (1) and (4).

Refer to wire tags installed during removal and reconnect wires of coil as indicated and then remove tags.

Install rear top cover. See WP 0018-00 and WP 0019-00.

Reconnect air conditioner to power source.

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