TM 5-4520-256-14
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 7.
Check fuel pressure gage for leaks, defects, or indicating error.
If fuel pressure gage is defective, replace fuel gage (para 3-15).
If fuel gage is not defective, proceed to step 8.
Step 8.
Re-adjust fuel pump fuel pressure (para 3-24).
If fuel pump cannot be adjusted to maintain the pressure, notify Intermediate Direct Support Maintenance.
5.
HIGH FUEL PRESSURE.
Step 1.
Adjust fuel pump fuel pressure (para 3-24).
If fuel pump cannot be adjusted to maintain the required pressure, notify Intermediate Direct Support
Maintenance.
Step 2.
Check fuel pressure gage for damage.
If fuel gage is damaged or defective, replace fuel pressure gage (para 3-15).
6.
BURNER SMOKES EXCESSIVELY.
Step 1.
Check burner combustion air plenum cover for looseness.
If cover is loose, tighten fasteners on cover.
If cover is not loose, proceed to step 2.
Step 2.
Check fuel pump adjustment (para 3-24).
If fuel pump is out of adjustment, adjust fuel pump (para 3-24).
If fuel pump cannot be adjusted, notify Intermediate Direct Support Maintenance.
7.
RETURN AIR TEMPERATURE IS HIGHER OR LOWER THAN DESIRED.
Step 1.
Check the fuel pressure for the proper setting (Table 1-1).
If fuel pressure is incorrect, adjust the pressure (para 3-24). Proceed to step 2.
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