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TM 10-3930-638-24&P
Section IV. ENGINE, FUEL, EXHAUST, AND COOLING SYSTEMS
A N D
GAGES MAINTENANCE
This section contains the information you need 10 maintain the engine’s:
It gives
replace
Cooling system
Exhaust system
Fuel system
Quick start system
Gages
you instructions on how to troubleshoot problems and repair or
the components that are within the scope of organizational
maintenance.
Para
Troubleshooting Symptom Index . . . . . . . . . . . . . . . . 2-8
Engine Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 2-9
Fuel System Troubleshooting . . . . . . . . . . . . . . . . . . 2-10
Exhaust System Troubleshooting . . . . . . . . . . . . . . . 2-11
Cooling System Troubleshooting . . . . . . . . . . . . . . . 2-12
Gages Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 2-13
Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14a
Draining and Refilling Engine Crankcase . . . . . . . 2-14b
Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14c
Intake Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14d
Exhaust Manifold . . . . . . . . . . . . . . . . . . . . . . . . 2-14e
Fuel System Maintenance. . . . . . . . . . . . . . 2-15
Fuel injection Pump . . . . . . . . . . . . . . . . . . . . . . 2-15a
Electric Fuel Pump and Lines . . . . . . . . . . . . . . . 2-15b
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15c
Fuel Tank Lines and Fittings . . . . . . . . . . . . . . . 2-15d
Para
In-Line Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . 2-15e
Fuel Filter Assembly . . . . . . . . . . . . . . . . . . . . . . 2-15f
Fuel Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-15g
Quick Start Kit . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15h
Accelerator/Throttle Control . . . . . . . . . . . . . . .2-15i
Spark Arresting Muffler
and Exhaust Pipe Maintenance . . . . . . . . . . . . . . . 2-16
Cooling System Maintenance . . . . . . . . . . . . . . . . . . 2-17
Radiator Servicing . . . . . . . . . . . . . . . . . . . . . . . . 2-17a
Hosts . . . . . . . . . . . . . . . . . . .2-17b
Radiator and Shroud . . . . . . . . . . . . . 2-17c
Thermostat and Housing . . . . . . . . . . . 2-17d
Water Pump Assembly . . . . . . . . . . 2-17e
Fan and Belt . . . . . . . . . . . . . . . .2-17f
Gages Maintenance . . . . . . . . . . . . . . . 2-18
Gage Bulb Replacement . . . . . . . . . . . 2-18a
Gages Replacement . . . . . . . . . . . . . 2-18b
2 - 8 . T R O U B L E S H O O T I N G S Y M P T O M I N D E X
Para/Malfunction
ENGINE
Engine hard to start or will not start . . . . .
Engine hard to start or will not start (exhaust smoke) .
Engine
starts
but
will
not
run
.
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.
Engine
misfires
.
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.
Engine stalls frequently or does not develop full power .
Engine cranks but does not start when quick start is activated
Excessive
oil
consumption
.
.
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.
.
Low
engine
oil
pressure
.
.
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.
Engine will not shut down . . . . . . . .
FUEL SYSTEM
Low
fuel
pressure
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Excessive
fuel
usage
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EXHAUST SYSTEM
Excessive
exhaust
noise
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Excessive
exhaust
smoke
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2-9/1
2-9/2
2-9/3
2-9/4
2-9/5
2-9/6
2-9/7
2-9/8
2-9/9
2-10/1
2-10/2
2-1
1/1
2-1 1/2
Page
2-12
2-15
2-15
2-17
2-18
2-21
2-21
2-22
2-22
2-23
2-24
2-24
2-25
2-11
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