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REPLACE/REPAIR MANIFOLD HEATER NOZZLE ASSEMBLY
MANIFOLD HEATER OPERATION CHECK - TM-9-2350-256-20_524
TM-9-2350-256-20 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) M548A3 2350-01-369-6081 Manual
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CHAPTER 4: MAINTENANCE OF MAIN ENGINE FUEL, AIR INTAKE, AND EXAUST SYSTEMS
TM 9-2350-256-20
4-21 REPLACE/REPAIR MANIFOLD HEATER NOZZLE ASSEMBLY-Continued
b. DISASSEMBLY
1
Remove spark plug (with gasket) (2) from manifold
heater (8).
2
Loosen locknut (12) and remove manifold heater
nozzle assembly (13).
3
Remove screw (14) and baffle (15).
c. ASSEMBLY
1
Install screw (14) and baffle (15) to manifold heater
(8).
2
Install manifold heater nozzle assembly (13) and
tighten locknut (12).
3
Inspect spark plug (with gasket) (2), electrodes,
and insulator condition. Replace spark plug (with
gasket) if unserviceable.
4
Set spark plug (with gasket) (2) gap at 0.094 to
0.114 in. (2.39 to 2.90 mm).
5
Install new spark plug (with gasket) (2).
d. INSTALLATION
1
Install manifold heater (8) and new gasket (9) with
four new self-locking nuts (10) and four flat
washers (11).
2
Connect fuel return elbow (7) and fuel return tube
(6) to manifold heater nozzle assembly (13).
3
Connect new bushing (5), fuel inlet elbow (4), and
fuel inlet hose (3) to manifold heater nozzle
assembly (13).
4
Connect electrical lead (1) to spark plug (with
gasket) (2).
4-46
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