TM 10-4520-262-12&P 0035 00
UNIT MAINTENANCE
SPACE HEATER, CONVECTIVE
(NSN 4520-01-431-8927)
0035 00-1
INTERNAL FUEL LINES
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)
In-tent controller assembly disconnected from
heater. (WP 0006 00)
Fuel source disconnected. (WP 0006 00)
Upper housing assembly removed. (WP 0030 00).
Battery disconnected. (WP 0018 00)
WARNING
The ignition system of this heater contains dangerous voltages which can cause severe
electrical shock. Be sure to disconnect battery pack before performing any maintenance
actions.
REPLACE
There are two internal fuel lines that are constructed of a heat formed plastic material (this does not
include the fuel hose which is covered in WP 0021 00). One line extends from the outlet end of the
fuel pump to the inlet of the burner assembly and the second extends from the “T” connector at the
base of the float assembly to the inlet of the fuel pump. A third plastic fuel drain line extends from the
top of the float assembly through the lower housing assembly. All internal fuel lines utilize brass
compression fittings and all are removed and replaced in the same fashion.
1. To remove an internal fuel line (1), loosen the fitting (2) at each end of the fuel line, taking care
not to spill the fuel that may be contained in the line. Drain the fuel into an approved container.
Wipe up any fuel that may spill in the lower housing assembly (3) or on any of the components.
2. Note the orientation of the fuel line in the heater, the replacement fuel line must be installed in the
same orientation.
3. Remove the fuel line (1) from the heater.
