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 rected in paragraph 153 b . Inspect the
c. Repair. Repair the flame heater fuel filter
f l a m e heater harness assembly (C)
assembly as directed in paragraph 81 b.
for cracked, frayed, and deteriorated
insulation. Inspect for continuity using
d. Assembly. Assemble the flame heater fuel
a low voltage circuit tester.
filter assembly as directed in paragraph 81 c.
Position the flame heater fuel filter assembly
b. Repair. Repair the flame heater fuel pump
(Z) on the flame heater fuel pump and fuel
and fuel filter bracket (R) as directed in para-
filter bracket (R) and secure with No. 10 plain
nut (U), No. 10 lock washer (V), and No. 10 x
graph 154 b. Replace the flame heater harness
assembly (C) when insulation is cracked, frayed,
1-3/4 machine screw (AA).
or deteriorated or when it fails to pass con-
Note. The other machine screw, lock washer,
tinuity test.
and nut securing flame heater fuel filter to
bracket is installed during engine assembly.
AND FLAME HEATER FUEL PUMP AND
Note. The key letters shown below in paren-
FUEL FILTER BRACKET
theses refer to figure 411.
Note. The key letters shown below in paren-
a. Cleaning and Inspection.
these refer to figure 411 except where other-
wise indicated.
(1) Cleaning. Clean tubes (E, K, X, and DD)
and clamps (A, B, and H) with a clean
a. Cleaning and Inspection.
dry cloth.
(1) Cleaning. Clean the flame heater fuel
(2) Inspection. Inspect tubes (E, K, X and
pump and fuel filter bracket (R) as
(DD) for deterioration, cracks, and kinks.
directed in paragraph 152 c. Wipe the
Inspect clamps (A, B, and H) for cracks
f l a m e heater harness assembly (C)
and bends.
with a clean dry cloth.
b . Repair. Replace tubes (E, K, X, and DD)
when deteriorated, cracked, or kinked. Replace
(2) Inspection. Inspect the flame heater fuel
clamps (A, B, and H) when cracked or bent.
pump and fuel filter bracket (R) as di-
Section XVII. REBUILD OF FLAME HEATER FUEL PUMP ASSEMBLY
232. DISASSEMBLY
(2) Figure 413. (A) Remove 5/16- inch check
nut. (B) Remove relief valve adjusting
screw from relief valve housing. (C)
a . Remove Relief Valve Housing. Remove
Remove 7/64 id x 0.070 thk preformed
relief valve housing as follows.
packing from relief valve adjusting
screw and discard. (D) Remove com-
pression spring. (E) Remove relief valve
ball guide. (F) Remove relief valve
(1) Refer to figure 412 and scribe aline-
ball.
ment marks on housing and base.
266
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