Table 4.2 Troubleshooting
MALFUNCTION
TEST
OR
INSPECTION
CORRECTIVE
ACTION
BURNER FAILS TO LIGHT
Step 1 Check fuel level in tank.
Add fuel is needed.
Step 2 Check fuel lines for kinks or other damage.
Replace damage fuel lines
fuel shut-off cock for defects.
Step 3 Check
Replace defective cock.
Step 4 Check tank fill cap valve for defects.
Replace defective valve.
Step 5 Check fuel filter
Clean or replace strainer.
Step 6 Check for defective control damper.
Replace defective damper,
BURNER FIRE TOO LOW
Step 1 check for bent or restricted fuel line
Replace defective line
Step 2 Check fuel shut cock for operation or restriction.
Clean or replace defective cock.
Step 3 Check tank fill cap valve for operation or restriction.
Clean or replace defective valve.
Step 4 check for defective temperature control valve
Replace defective valve.
Step 5 Check fuel filter.
Clean or replace strainer
BURNER FIRE TOO HIGH
Step 1 Check temperature control valve
Replace defective valve.
Step 2 Check Engine Speed
Refer to (TM 5-2805-256-14) for procedure.
LOW HEAT AT DUCT DISCHARGE
Step 1 Check ducts for tears
Repair or replace ducts
Step 2 Check discharge air damper
Adjust faulty damper
Step 3 Check temperature control valve
Replace faulty temperature control valve.
HEATER LOSES FUEL
Check fuel system for leaks
Repair leaks or replace leaking components.
Section VII. RADIO INTERFERENCE SUPPRESSION
4-13 Interference Suppression Com-
4-12 General
ponents
Essentially, suppression is attained by providing a
Radio interference suppression components are
low resistance path to ground for stray currents. The
described in TM 5-2805-256-14. Replacement and
methods used include shielding the ignition and high
testing these are also discussed.
straps, and using capacitors and resistors.
Section VIII. GENERAL MAINTENANCE
4-14 General
or subsystem specified in the MAC (app B). Each
major assembly subsystem so specified for
The following sections in this chapter are devoted to
organizational maintenance is covered under its own
applicable instructions for removal, disassembly, ad-
section and the titles of these sections correspond to
justments, cleaning, inspection, repair, testing,
the MAC.
reassembly and installation of each major assembly
