TM 10-4520-262-12&P 0027 00
UNIT MAINTENANCE
SPACE HEATER, CONVECTIVE
(NSN 4520-01-431-8927)
0027 00-1
COMBUSTION AIR BLOWER ASSEMBLY
REPLACE
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics (Item 1, WP 0044 00)
Equipment Condition
Heater shut down and all advisory lights off. (WP
0006 00)
Fuel supply disconnected. (WP 0006 00)
Battery disconnected. (WP 0018 00)
Upper housing assembly removed (WP 0023 00)
WARNING
The ignition system of this heater contains dangerous voltages which can cause severe
electrical shock. Be sure to disconnect power before any maintenance actions.
REPLACE
1. Remove the combustion air inlet cover (1) by releasing the two quarter turn screws at either end
of the cover. Remove the cover (1) and set aside.
2. Remove the two screws (2) that secure the combustion air inlet end fitting bracket (3) to the lower
housing assembly. Set the bracket aside.
3. Remove the combustion air inlet end fitting (4) from the combustion air inlet hose (5) and set
aside.
4. Remove the two screws and lockwashers (13) that secure the combustion air blower assembly
(8) to the heated air blower housing (14).
5. Remove the screw (6) that secures the blower assembly clamp (7) around the body of the
combustion air blower assembly (8).
6. Disconnect the combustion air blower assembly duct (9) from the combustion air blower outlet
(10) by loosening the hose clamp (11) and pulling the duct (9) from the combustion air blower
outlet (10).
