EVAPORATOR IMPELLER FANS DIRECT SUPPORT MAINTENANCE REPLACEMENT

TM 9-4120-425-14&P

EVAPORATOR IMPELLER FANS DIRECT SUPPORT MAINTENANCE REPLACEMENT

THIS WORK PACKAGE COVERS:

Removal and Installation

INITIAL SETUP:

Maintenance Level

Direct Support

Tools and Special Tools

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

Key, Socket Head Screw (Item 13, Table 2, WP 0118-00)

Equipment Condition

Main power source is disconnected, shut down and cool.

Evaporator air intake louver removed (WP 0020-00).

Evaporator fan assembly removed (WP 0057-00).

Evaporator fan scrolls removed (WP 0058-00).

WARNING

Disconnect air conditioner power.

REMOVAL

Using a socket head screw key (Item 13, Table 2, WP 0118-00) loosen set screw (1) and impeller fan (2) from

evaporator fan assembly.

Remove inlet ring (3).

Repeat for other impeller fan if other fan is being replaced.

INSTALLATION

NOTE

Be sure to coat motor shaft with general purpose grease (Item 28, Table 1, WP 0121-

00) to aid in assembly of impeller fan on motor shaft.

Place inlet ring (3) onto motor shaft (4).

Install impeller fan (2) onto motor shaft (4) and loosely tighten set screw (1).

Repeat for other impeller fan.

Install evaporator fan scrolls. See WP 0058-00.

Center impeller fan (2) in evaporator fan scroll and tighten set screw (1) using a socket head screw key (Item 13,

Spin both impeller fans to ensure fans do not rub against scrolls.

0058-00-1