T O 35 C2-3-442-2
T M 5-6115-457-34
1 1 - 1 2 . CLEANING.
a. Clean electrical components with a
cloth moistened with an approved cleaning
ble heater in the order of index numbers
solvent, and dry thor oughly.
assigned. Pay particular attention to the
b. Remove carbon desposits from burner
assembly using a suitable wire brush.
a . R e m o v e c o v e r ( 1 ) . T a g and di scon-
Cleaning Solvents are flammable and
moderately toxic to skin, eyes and
respiratory tract. Eye and skin
protection required. Good general
ventilation is normally adequate.
Use care when removing quartz
rod (14) as it is easily broken if
Compressed air used for cleaning and
drying purposes can create airborne
particles that may enter the eyes.
b . Remove receptacle assembly (3),
Pressure shall not exceed 30 psig.
Eye protection is required.
terminal block (5), and flame switch
c . Clean orifice assembly by forcing
filtered compressed air through orifice in
the reverse flow direction.
d. Clean parts with an approved cle an -
ing solvent, and dry thoroughly.
1 1 - 1 3 . INSPECTION.
a . Inspect components for cracks,
Do not remove regulator
d e n t s , distortion, burrs, nicks, and dam-
valve assembly (21) until
after casting (40) has been
b. Inspect insulation for damage.
c . Inspect springs for condition.
d. Remove burner assembly (48), and
motor and pump assembly (55) as a
of 1 0.1 pounds and compress spring (60)
c o m p l e t e assembly.
to a working length of 0.750 inch. Spring
should measure 1.164 inches free length
d . Inspect receptacle assembly for
Coolant pump (56) cannot be re-
loose connections and bent or broken te r-
moved as a complete assembly.
minal pins. Check for short to case and
The unit must be disassembled dur-
ing removal as the pump rotor (67)
between wires and terminal pins.
is secured to the motor shaft by a
e . Inspect orifice assembly for proper
set screw (66).
orifice opening. Opening should be
0.012 inch diameter.
e . Before disassembly of coolant pump,
f. Inspect regulator valve assembly (21)
make an alignment mark across adapter
(68), cam ring (63), and plate (58) for cor-
rect alignment during reassembly.