Table 3-2. Troubleshooting (Cont'd).
TEST OR INSPECTION
WATER HEATER ASSEMBLY--Continued
Step 2. Check for air leaks in fuel hose.
Tighten fuel hose connections.
Step 3. Check to see if feed and return fuel hose assemblies are reversed.
Connect hose assemblies and barrel plug properly.
Step 4. Make sure fuel pump has been primed.
Turn off blower and fuel pump motor. Prime fuel
pump by removing prime plug and pouring fuel into
prime port. Replace and tighten plug.
3. LOW OR HIGH FUEL PRESSURE INDICATED ON GAGE
Step 1. Check burner fuel control valve.
To increase the fuel pressure, turn the valve
clockwise; to decrease the fuel pressure,
turn the valve counterclockwise (para 2-6 a).
4. PULSATING PRESSURE INDICATED ON PRESSURE GAGE
Step 1. Check for leaking fuel feed hose assembly.
Tighten fuel hose assemblies.
Step 2. Inspect for loose strainer cover.
Tighten all cover screws.
Section V. MAINTENANCE OF MISCELLANEOUS ITEMS
This section describes maintenance functions of items
. The suction hose strainer (2, fig. 3-
which are listed in Group No. 01 of the MAC and which
to the suction hose assembly, and
the operator must perform. Any deficiency which the
used to prevent leaves and debris from entering the
operator is not authorized to correct must be reported as
stipulated by TM 38750.
b. Inspect and Service. Inspect for bent or broken
suction hose strainer, and the coupling-half (2) for
stripped or damaged threads.