TM 10-4520-262-12&P 0021 00
UNIT MAINTENANCE
SPACE HEATER, CONVECTIVE
(NSN 4520-01-431-8927)
0021 00-1
FUEL HOSE
INSPECT, REPLACE
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics (WP 0044 00, Item 1)
Rags, Wiping, Clean (Item 5, WP 0067 00)
Mat, Petroleum Absorbent (Item 15, WP 0067 00)
Wrap, Tie (Item 16, WP 0067 00)
Personnel Required
Equipment Condition
One
Heater shut down and all advisory lights off. (WP
0006 00)
In-tent controller assembly disconnected from
heater. (WP 0006 00)
Fuel supply disconnected. (WP 0006 00)
Sediment strainer bowl empty of fuel. (WP 0020
00)
Battery disconnected. (WP 0018 00)
Upper housing assembly removed. (WP 0030 00)
WARNING
The ignition system of this heater contains dangerous voltages which can cause severe
electrical shock. Be sure to disconnect battery pack before any maintenance actions.
INSPECT
1. Inspect the fuel hose (1) and fittings (2) for any cuts, abrasions, dents, or other damage that may
cause the fuel hose to leak.
2. Inspect the rubber grommet (3) where the fuel hose passes through the side of the lower housing
assembly for any damage that would prevent it from protecting the fuel hose from the sheet metal
edges of the lower housing assembly.
REPLACE
1. To remove the fuel hose (1), cut and remove the tie wraps (4) that secure the wire loom (6) to the
sediment strainer outlet fitting (7) and the fuel hose (1).
2. Move the wire loom (6) and enclosed wires out of the vicinity of the fuel hose (1).
