When To Service The Dry Type Air Cleaner; Basic Troubleshooting - Detroit Diesel 92 Series Operator's Manual

NOTICE:
If all of the coolant is drawn out of
the recovery bottle when the engine
cools, remove the pressure control
cap from the radiator or heat
exchanger and check to make sure
the coolant level is at or near the
bottom of the filler neck. Add
coolant as required to bring it to this
level. Replace the pressure control
cap and fill the recovery bottle to
the "Full Cold" mark, or no more
than one-quarter full. Do not overfill
the recovery bottle since this can
result in spillage as the coolant
heats and expands during engine
operation. Failure to properly fill the
cooling system and purge it of air
can result in engine overheating
and serious engine damage.
NOTICE:
If the engine overheats and the
coolant level is satisfactory, the
cooling system may require clean-
ing with a descaling solvent and
backflushing. Authorized Detroit
Diesel service outlets are properly
equipped to perform these services.
In addition to the cleaning procedure,
other components of the cooling sys-
tem should be checked periodically
to keep the engine operating at peak
efficiency.
I. When to Service the
Dry Type Air Cleaner
Replace dry type air cleaner elements
when the maximum allowable air
cleaner restriction (20 inches of water
or 5.0 kPa) has been reached, or
annually, whichever comes first. Some
air cleaners are equipped with a
restriction indicator which aids in
determining the service interval.
Cleaning and/or reusing dry paper
type air cleaner elements is not recom-
mended unless the cleaning method
used removes clogging without dam-
age to the element. Inspection and
cleaning of elements must be done in
accordance with the air cleaner manu-
facturers' recommendations, if any.
60

BASIC TROUBLESHOOTING

HARD STARTING
Probable Causes:
Low battery voltage
Loose cranking motor
connections
Faulty cranking motor
Faulty cranking motor switch
Internal seizure
Improper lube oil
Circuit breaker/electronic control
malfunction
Fuse blown or missing
Insufficient Fuel Supply
Air in fuel
Out of fuel
Loose fuel connections
Cracked fuel lines
Obstructed fuel filters/lines
Faulty fuel pump
Faulty injector operation
Restricted fuel-fitting missing
DDEC malfunction
Low Compression
Worn intake and exhaust valves
Worn piston rings/liners
Leaking cylinder head gasket
Improper intake and exhaust
valve adjustments
Engine Will Not Rotate
Low Cranking Speed
Engine Cranks But Will Not
Start
X X
X
X X
X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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