TM 10-3510-208-12
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. WATER LEVEL LOW
Step 1. Start the water pump (fig. 3-2, sheet 4 of 4) and check for proper operation, refer to paragraph 2-3b (4). Rated capacity of
water pump is 18 to 20 gpm (gallons per minute) (68,4 to 76 liters) at 65 foot head.
Fill heater and maintain pressure, paragraph 2-3b (4).
Step 2. Check for the drain valve being opened (it is open when the drain valve dump lever is all the way to the right of the "open"
mark).
Close the valve by swinging the lever to the left of the "open" mark.
7. WASHER-EXTRACTOR WILL NOT CHANGE PHASES OF OPERATION
Check the reading on the air pressure gage (fig. 2-4) (located on air supply tank). Gage should read between 75 and 80 psi (5.27
and 5.63 kg per sq cm).
Adjust pressure and bleed supply tank by opening and closing the bleeder valve (fig. 2-4) (located at front bot-
tom of air supply tank).
Section IV. MAINTENANCE PROCEDURES
3-7. Fuel Pumps and Filters
b. Water Heater Fuel Pump and Filter. Service
the water heater fuel pump and filter in a similar
Refer to the following instructions and service the
manner as the air heater fuel pump and filter.
fuel pumps and filters.
NOTE
a. Air Heater Fuel Pump and Filter.
When Mogas is used as the fuel source, add one
(1) Remove six mounting screws, (1, figure 3-3)
quart (.95 liters) of OE-30 engine oil to each 5
on fuel filter,
gallons (19 liters) of Mogas.
(2) Remove fuel filter sump and cartridge disk
3-8. Fuel Pump Adjustment
(2).
a. Air Heater Fuel Pump Adjustment.
(1) Remove adjusting screw end cap (fig. 3-4).
Clean all parts in a well-ventilated area.
(2) With the fuel pump operating, turn
Avoid inhalation of solvent fumes and
pressure regulating setscrew until reading on the
prolonged exposure of skin to cleaning
pressure gage indicates 100 psi (7.03 kg per sq
solvent. Wash exposed skin thoroughly. Dry
cm).
cleaning solvent (Fed. Spec. P-D-680) used
(3) Install adjusting screw end cap on
to clean parts is potentially dangerous to
pressure regulating setscrew.
personnel and property. Do not use near
b. Water Heater Fuel Pump Adjust-
open flame or excessive heat. Flash point of
ment. Adjust the water heater fuel pump in a
solvent is 100 to 138F. (38 to 59C.).
similar manner as the air heater fuel pump.
(3) Clean cartridge disk with cleaning solvent,
Fed. Spec. P-D-680, and dry thoroughly.
3-9. Suction Line Sediment Strainer
(4) Install cartridge disk and fuel filter sump (2,
Refer to the following instructions and service
the suction line sediment strainer.
(5) Remove eight mounting screws (3, fig. 3-3)
on fuel pump (4).
b. Fill pump with water.
(6) Remove strainer and gasket and clean
c. Replace priming plug.
strainer with cleaning solvent, Fed. Spec. P-D-680,
d. Remove sediment strainer cap and strainer.
and dry thoroughly.
(7) Install strainer and new gasket and secure
with eight mounting screws (3, fig. 3-3).
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