TM 10-4520-263-12&P
0016 00
OPERATOR MAINTENANCE
SPACE HEATER SMALL (SHS)
NSN 4520-01-478-9207
BURNER SHELL AND DOWNTUBE ASSEMBLY
SERVICE, REPLACE
0016 00-1
INITIAL SETUP:
Tools
Personnel Required
Wire brush or equivalent (WP 0029 00, Table 2,
Item 1)
One
Materials/Parts
Equipment Condition
Wiping Rags (WP 0049 00, Table 1, Item 1)
SHS shut-down and cool (WP 0005 00)
SERVICE
1. Unlatch and remove canister lid assembly (1).
2. Using a rag, reach into burner shell assembly (2) and pull the downtube assembly (3) up and off
the up-tube (4). Note that it may be necessary to twist the downtube slightly while pulling upward
to remove due to soot deposits.
3. Use a wire brush or equivalent to loosen any heavy deposits of carbon or soot from inside the
burner shell assembly (2), and downtube assembly (3).
4. Wipe the area under the high fire ring (5) with a rag to remove any carbon deposits.
5. Wipe the inside of burner shell assembly (2), outside of up-tube (4) and the downtube assembly
(3), with a damp rag. Be sure to wipe out all loose debris in bottom of the burner shell assembly
(2).
6. Replace downtube (3) over the up-tube (4). Make sure that downtube is properly seated at the
bottom of the burner by pushing down firmly.
7. Install and latch the canister lid assembly (1).
REPLACE
1. To replace a defective downtube (3), remove the canister lid assembly (1) reach into the burner
shell assembly (2).
2. Grasp the downtube (3) with a rag and pull up with a slight twisting motion.
3. Remove the downtube (3) from the burner shell assembly (2).
4. Install a new downtube (3) by sliding over the up-tube (4). Make sure that downtube is properly
seated at the bottom of the burner by pushing down firmly.
5. Install the canister lid assembly (1) taking care to align the keepers on the side of the lid
assembly with the latches on the heater canister. Engage latches.
