TM 9-2320-289-34
11-3.
WARM AIR HEATER REPAIR (Con’t).
3 .
Clean all carbon from igniter.
4.
Clean any accumulation of dirt from case.
5.
Inspect all leads for damage, Inspect connectors for looseness or corrosion. Replace if any of
these conditions exist.
6.
Inspect rod located under flame detector switch. If rod is broken, replace flame detector
switch.
7.
Inspect burner assembly and heat exchanger for damage or burn through. Replace if damaged
or burnt through.
8.
Inspect blower assembly for damage. Replace if damaged.
9.
Inspect fuel control valve for damage. Replace if damaged.
c .
ASSEMBLY
1.
Install new preformed
assembly (23).
2 .
Place burner assembly
and nuts into position.
packing ring (24) and new gasket
(23) in heat exchanger housing, and
(25) over burner end of burner
loosely install hook bolts, clamps,
3.
Aline burner assembly (23) to large access hole in heater housing (3). Install ground lead and
tighten hook bolts, clamps, and nuts.
4.
Install secondary blower housing (19) in burner assembly (23), and aline access opening with
large hole of heater housing (3). Firmly seat in place.
5.
Install fuel line through secondary blower housing (19) access tube, Connect fuel line nut onto
burner bushing (26) and tighten connection.
6.
Install igniter tube (20) into igniter chamber with screw (21). Install igniter assembly (22) and
press against spring to engage bayonet fastener.
11-15
