Junction Box Number One

TM 5-4120-393-14

4-40. Junction Box Number One

This task covers:

a. Removal

c. Installation

b. Inspection, Testing, Repair, and Replacement

Initial setup.

Tools:

Tool kit, service, refrigeration unit NSN 5180-00-596-1474

Personnel: 1

Equipment condition:

1. Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power

cable to air conditioner.

2. Remove lower front panel. See para 4-24.

General Safety Instructions:

WARNING

Disconnect input power to the air conditioner before performing any internal

maintenance. Voltages used can KILL. Shutting the unit off at the control panel

does not disconnect unit power.

REMOVAL

Disconnect P22, P14, P10, P4, and P13 harness connectors from J22, J14, J10, J4 and J13 box.

Using screwdriver, remove screw (1), washer (2), and nut (3) from circuit breaker push-pull control wire clamp (4).

Remove clamp (4) and plate (5).

Loosen screw in core end fitting (6) and remove core end fitting (6).

Pull push-pull control wire (7) end free of actuator arm (8).

Using screwdriver, remove three screws (10) from side of junction box.

Using screwdriver, remove two screws (11) and flat washers (12) from lower junction box mounting foot.

Using screwdriver and wrench remove four each screws (13) and nuts (14) and slip connector J27 and harness (15)

from top of junction box.

Carefully lift junction box up and out of air conditioner.

4-95