TM 5-4520-256-14
Table 4-1. Intermediate Direct Support Level Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
FUEL PRESSURE FAILS TO RISE (HEAT MODE).
Step 1. Check for inoperable motor.
If motor does not operate, test motor (para 4-6).
If motor operates, proceed to step 2.
Step 2. Check for damaged coupler.
If coupler is damaged, replace coupler (para 4-6).
3.
LOW FUEL PRESSURE
If this condition exists, adjust fuel pump in accordance with table 2-4.
If fuel pressure cannot be adjusted, replace fuel pump (para 4-6).
4.
HIGH FUEL PRESSURE.
If this condition exists, adjust fuel pump in accordance with table 2-4.
If fuel pressure cannot be adjusted, replace fuel pump (para 4-6).
Section II. MAINTENANCE PROCEDURES
Para.
Para.
Cabinet Assembly Maintenance ........... 4-4
Blower, Pump, and Motor Assem-
Control Panel Maintenance .................. 4-5
bly Maintenance ............................................... 4-6
Skid Maintenance ............................................. 4-7
4-2
