P-8-627-34
T O 35C2-3-442-2
TM 5-6115-457-34
TM-07464A-35
12-13.
C LEANING.
WARNING
WARNING
Do not handle heating element dur-
Cleaning Solvents are flammable and
ing test and permit element to cool
moderately toxic to skin, eyes and
prior to removing test equipment.
respiratory tract. Eye and skin
d. Connect single phase 240 volts, 50,
protection required. Good general
60, or 400 hertz power supply to heating
ventilation is normally adequate.
element terminals. Connect suitable am-
a. Remove hand coolant deposits from
components by boiling components a mini-
element and power supply. Apply 240 VAC
mum of 30 minutes in solution of one pound
baking soda to each gallon of water.
Heating element should draw 10.8 amperes
and 2500 watts. Remove test equipment,
b. Clean old gasket from intake head
replace defective heating element.
and check valve assembly and tank using a
12-15. REASSEMBLY.
Exercise care not to
suitable scraper.
Refer to figure 12-5 and reassem-
gouge surfaces.
ble the electric heater in the reverse order
of index numbers assigned. Pay particular
Clean parts with an approved clean-
c.
attention to the following:
ing solvent and dry thoroughly.
a. Apply thread sealing compound con-
forming to Military Specification MIL-S-
12-14.
INSPECTION.
45180, type III, to threads of end plug (3)
and plug (9) prior to installation.
a. Inspect threads for damage.
b. When installing intake head and
check valve assembly (7), make sure that
b. Inspect parts for cracks and dam-
hole with arrow is on top.
aged gasket surfaces.
12-16. INSTALLATION .
c. Check flap of check valve for free-
Refer to Operator and Organiz a-
dom of movement and for proper seating on
tional Manual and install the
intake head.
electric heater.
Section III. COOLANT PUMP
12-17.
The motor is equipped with an internal
GENERAL.
bypass and feed thru capacitor for radio
The coolant pump consists of a
suppression and voltage and current pro-
tection. The pump is a rotor type with a
pump and motor assembly which operates
built in relief valve that is set at 30 to
on 24 VDC and provides a minimum of
80 gallons per hour at 2 PSI. The motor is
35 PSI. If coolant pressure reaches 30 to
a continuous duty type and rotates in a
35 PSI, the relief valve ball is unseated
and coolant is permitted to bypass inter-
clockwise direction as viewed from the pump
nally within the pump until pressure is
end. The motor is rated at 20 to 32 VDC,
reduced to 30 PSI.
3.3 amperes with a maximum of 7500 RPM.
12-8
Change 8
