SOLENOID VALVE (COIL) TESTING, REPAIR, REMOVAL, AND INSTALLATION

TM 9-4120-428-14

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UNIT MAINTENANCE

AIR CONDITIONER, HORIZONTAL, COMPACT

(NSN 4120-01-502-1319)

SOLENOID VALVE (COIL) TESTING, REPAIR, REMOVAL, AND INSTALLATION

INITIAL SETUP:

Equipment Condition

Tools

Remove Top Rear Panel (WP 0019 00)

Refrigeration Unit Service Tool Kit, WP 0000 00, Item

Materials/Parts

Solenoid Valve Coil

Tie Down Straps

WARNING

Do not attempt to disassemble the solenoid valve other than the coil removal with a

refrigerant charge in the system. Refrigerant will dangerously be sprayed out if the

screws that attach the tube and plunger assembly to the valve body are loose.

SOLENOID

VALVE L2

DO NOT LOOSEN

SOLENOID VALVE L1

NOTE

The following basic instructions apply to both the by-pass solenoid L1 and the pressure

equalizer solenoid L2.

TESTING

1. Disconnect the solenoid valve connector plug (1). (P8 for L1 solenoid and P9 for L2 solenoid).

2. Check for continuity between pins A and B in the connector plug (1). If continuity is not found, the coil (4) is open

and must be replaced.

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