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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
1.
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.
2.
Remove inlet ring (3).
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.
1.
Place inlet ring (3) onto motor shaft (4).
2.
Install impeller fan (2) onto motor shaft (4) and loosely tighten set screw (1).
3.
Repeat for other impeller fan.
4.
Install evaporator fan scrolls. See WP 0058-00.
5.
Center impeller fan (2) in evaporator fan scroll and tighten set screw (1) using a socket head screw key (Item 13,
Table 2, WP 0118-00).
6.
Spin both impeller fans to ensure fans do not rub against scrolls.
0058-00-1

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