Table 6-2. Improved Clean Air Induction System Malfunction Index

TB 9-2300-378-14

Table 6-2. Improved Clean Air Induction System Malfunction Index

MALFUNCTION

Page

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AIR CLEANER FILTER ELEMENTS REQUIRE CLEANING TOO OFTEN,

ACCOMPANIED BY:

A. EXCESSIVELY DIRTY ELEMENT

LOW POWER AND EXCESSIVE BLACK EXHAUST SMOKE

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SOOT AN D/OR MOISTURE ON FILTER ELEMENT AND/OR DARK COLORED

WATER OR MUD IN SCAVENGE TUBE OR CHECK VALVE.

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HIGH FILTER CLOG INDICATOR READING DURING HEAVY SNOW OPERATION

ACCOMPANIED BY LOW POWER AND EXCESSIVE BLACK EXHAUST SMOKE.

NO FILTER CLOG INDICATOR READING ACCOMPANIED BY LOW POWER AND

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EXCESSIVE BLACK EXHAUST SMOKE.

ENGINE REVERSAL: VEHICLE HAS STALLED AND ROLLED BACKWARD DOWN

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AN INCLINE WITH TRANSMISSION IN A FORWARD GEAR

POWERPLANT WARNING AND DUST DETECTOR WARNING LIGHTS ON, ONE

6-15

(OR BOTH) DUST DETECTOR PRESSURE SWITCH(ES) TRIPPED, AND DUST

DETECTOR FILTER STRIP INDICATES CONTAMINATION OF INTAKE AIR BY:

A. DUST - (COLOR OF LOCAL SURROUNDINGS)

B. FUEL - (CLEAR TO TAN IN COLOR - OILY FEELING)

C. SOOT, DRY - (GRAY TO BLACK IN COLOR, DUSTY, AND SMEARS)

D. OIL, BLACK, AND WET

E. WATER

POWERPLANT WARNING AND DUST DETECTOR WARNING LIGHTS ON, ONE

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(OR BOTH) DUST DETECTOR PRESSURE SWITCH(ES) TRIPPED, BUT DUST

DETECTOR FILTER STRIP DOES NOT INDICATE CONTAMINATION OF INTAKE

AIR.

DUST DETECTOR WARNING LIGHT ON, POWER PLANT WARNING LIGHT OFF,

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DUST DETECTOR PRESSURE SWITCH(ES) TRIPPED.

POWERPLANT WARNING LIGHT ON, DUST DETECTOR WARNING LIGHT OFF,

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DUST DETECTOR PRESSURE SWITCH(ES) TRIPPED.

10. DUST DETECTOR PRESSURE SWITCH(ES) TRIPPED, BUT DUST DETECTOR

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WARNING LIGHT AND POWERPLANT WARNING LIGHT DO NOT COME ON.

11. POWERPLANT WARNING LIGHT ON, DUST DETECTOR WARNING LIGHT ON,

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BUT DUST DETECTOR PRESSURE SWITCH(ES) NOT TRIPPED.

12. POWERPLANT WARNING LIGHT NOT ON, DUST DETECTOR WARNING LIGHT

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NOT ON, DUST DETECTOR PRESSURE SWITCH(ES) NOT TRIPPED, DUST

INGESTION IS APPARENT.

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