TM 9-4520-258-14
4-23. RETURN/SUPPLY SCREEN.
This task consists of:
a.
Removal
b.
Inspection
c.
Installation
|INITIAL SETUP:
Tools:
Material Parts:
Tool Box, General Mechanics (Item 1, App B)
Lockwashers (Item 8, App H)
Rags (Item 2, App E)
Equipment Condition:
Supply and return air duct covers removed
(para 4-22)
Unit disconnected from power source (para 2-8).
a.
Removal (Refer to Figure 4-25)
(1)
Remove four nuts (1), four lockwashers (2), four screws (3), and eight flat washers (4).
(2)
Remove supply screen (5).
(3)
Repeat step (1) and (2) to remove second screen (5).
b.
Inspection
(1)
Inspect screens for dirt, grease, and soot. Clean with rags (Item 2, App E).
(2)
Inspect screens for broken wire mesh and/or cracked welds.
c.
Installation (Refer to Figure 4-25)
(1)
Install screen (5).
(2)
Install eight flat washers (4), four screws (3), four lockwashers (2) and four nuts (1).
(3)
Repeat steps (1) and (2) to install second screen (5).
4-92
