TM 9-4520-271-14
UNIT MAINTENANCE INSTRUCTIONS
ARMY SPACE HEATER H-140
NSN 4520-01-477-0568
REMOTE CONTROL BOX
DISASSEMBLY, INSPECTION, REPAIR, ASSEMBLY
INITIAL SETUP:
Materials/Parts
Test Equipment
Chain (item 83, WP 0047 00)
None
Lockwasher (item 26, WP 0062 00)
Lockwasher (item 27, WP 0062 00)
Tools and Special Tools
O-ring (item 43, WP 0062 00
Automotive general mechanics tool kit
Rivet (item 5, WP 0062 00)
(item 10, WP 0058 00)
Rivnut (item 12, WP 0062 00)
Blind riveter (item 2, WP 0058 00)
Sealing compound (item 16, WP 0061 00)
Crimping tool (item 6, WP 0058 00)
Solder (item 23, WP 0061 00)
Drill (item 6, WP 0058 00)
Wire marker tag (item 25, WP 0061 00)
Drill bit (item 6, WP 0058 00)
Wire tie (item 24, WP 0061 00)
Rivnut tool (item 3, WP 0058 00)
Soldering iron (item 8, WP 0058 00)
Equipment Conditions
ASH disconnected from power source
Personnel Required
One
References
None
DISASSEMBLY
Front Panel Assembly Removal
CAUTION
When the front panel mounting screws are removed, the carbon monoxide detector will be loose. Handle
the front panel carefully to avoid damage to the carbon monoxide detector wiring.
1.
Remove ten screws (1), lockwashers (2), and washers (3). Discard lockwashers.
2.
Carefully position front panel assembly (4) for access to internal wiring.
3.
Tag and disconnect four wires (5) from terminal board TB4 (6) terminals 1, 2, 3, and 5. Connect remaining wires.
4.
Tag and disconnect wire (5) from terminal board TB4 (6) mounting screw.
5.
Tag and disconnect three wires (5) from mode switch S8 (7) terminals 11, 31, and 34. Connect remaining wires.
6.
Cut wire ties as required.
7.
Remove gasket (8) from enclosure (9).