Section III. TROUBLESHOOTING
3-4. General
locate or verify the malfunction, followed by
corrective action recommended to remedy
Table 3-2 provides information useful in
malfunction. Any trouble beyond the scope of
diagnosing and correcting troubles which cause
operator maintenance m u s t b e r e p o r t e d t o
unsatisfactory operation or failure of the filter-
organizational maintenance.
separator and its components. Each malfunction
stated is followed by a list of tests or inspections to
Table 3-2. TROUBLESHOOTING
MALFUNCTION.
TEST OR INSPECTION
CORRECTIVE ACTION
1. DIRTY FUEL AT NOZZLE.
Inspect for ruptured element.
Replace element.
2. NO FUEL DELIVERY
Check to see if inlet or outlet valves are closed.
Open valves.
2. GENERAL FUEL LEAKAGE
Step 1. Inspect to see if cover gasket is worn or torn.
Replace cover gasket.
Step 2. Check for loose hardware or fittings.
Tighten hardware or fittings.
4. DISCHARGED FUEL CONTAINS WATER
Step 1. Check to see if teflon coated screen in the canisters is torn or cracked.
Replace canisters.
Step 2. Inspect for over accumulation of water in sump.
Drain water from sump.
5. SUDDEN INCREASE OR DECREASE IN PRESSURE DIFFERENTIAL.
Check for clogged or ruptured filter elements.
Replace filter elements.
Section IV. MAINTENANCE OF FILTER-SEPARATOR
separator being cleaned. Avoid the lead sludge
WARNING
contacting the clothing and skin by not splashing
Fuel resistant rubber gloves must be
the sludge and by wearing fuel resistant rubber
worn at all times when working with any
gloves.
component that has been soaked or
(3) Keep the sludge or lead out of the mouth.
contaminated with fuel. Fuels contain
Do not carry food in the pockets and do not store
varying amounts of toxic chemicals
food near a tank because food will readily absorb
which, i f i m p r o p e r l y h a n d l e d , c a n
lead vapor. Always wash before eating or smoking.
result in serious health hazards.
b. Removal. Remove the filter elements in the
following manner.
a. Safety Precautions.
(1) Stop the pumping unit. Shut off up-stream
(1) If a filter-separator has been service for a
and down-stream system valves.
period of time with leaded fuels, a muddy sludge or
CAUTION
sediment may be deposited on the filter elements.
Depressurize the tank before at-
This sludge is particularly hazardous because it
tempting removal of the filter elements.
contains varying amounts of "tetraethyl lead". The
System pressure may be trapped in the
toxic effects of this compound or vapor is
tank.
cumulative and leads to lead poisoning.
(2) Very slowly open the air vent valve (5, fig.
(2) Stay on the up-wind side of the filter-
