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Page Title:
INTAKE MANIFOLD HEATER ASSEMBLY |
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 79. INTAKE MANIFOLD HEATER ASSEMBLY
a. Removal and Disassembly. Remove and
dissasemble intake manifold flame heater as-
sembly as follows.
(1) Figure 137. (A) Disconnect flame heater
ignition lead from spark plug. (B) Dis-
connect flame heater fuel return-to-
solenoid valve tube from 1/8 pipe x
1/4 tube union in nozzle and holder as-
sembly. (C) Disconnect flame heater
fuel solenoid valve-to- flame heater noz-
zle tube from 1/8 pipe x 1/8 tube, 90
degree elbow in nozzle and holder as-
sembly. (D) Remove four 5/16- inch
A-
Housing
plain nuts and 5/16- inch lock washers
Gasket (early model engines)
B-
securing intake manifold flame heater
Plug (early model engines)
C-
assembly to intake manifold elbow.
Nozzle and holder assembly
D-
(E) Remove intake manifold flame heater
1- Body
assembly. Remove and discard flame
2- Gasket
heater gasket.
3- Seat
4- Gasket
5- Valve
6- Filter
7- Nut
8- Holder
E - Spark plug with gasket assembly
1- Spark plug gasket
2- Spark plug
HEATER - EXPLODED VIEW.
b. Disassembly of Flame Heater Nozzle and
Holder Assembly (fig. 139). Disassemble flame
heater nozzle and holder assembly by removing
body (D- 1) and body gasket (D-2). Remove seat
(D- 3), seat gasket (D-4), valve (D- 5), and filter
(D-6). Remove nut (D-7) from holder (D-8).
BLING INTAKE MANIFOLD FLAME
c. Cleaning, Inspection, and Repair.
HEATER.
(1) Cleaning. Clean all intake manifold
(2) Figure 138. (A) Remove 1/8 pipe x 1/8
flame heater components with dry-
tube, 90 degree elbow from 1/8 pipe
cleaning solvent or mineral spirits
x 1/4 pipe bushing and bushing from
paint thinner. Remove all heavy car-
nozzle and holder assembly. (B) Re-
bon deposits using a stiff brush or
move 1/4 tube x 1/8 pipe union from
scraper. Do not attempt to clean the
nozzle and holder assembly. (C) Loosen
body with brush and/or scraper. Refer
nut and remove nozzle and holder as-
to TM 9-8638 for cleaning instructions
sembly. (D) Remove plug and plug gas-
for spark plug (E-2).
ket from housing (early model engines).
Late model engines do not have plug or
(2) Inspection. Inspect intake manifold
gasket in housing. (E) Remove spark
flame heater housing (A) for cracks,
plug and spark plug gasket from hous-
damaged threads, and damaged gasket
ing.
surfaces. Inspect nozzle and holder
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