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Page Title: Table 6-3. Improved Clean Air Induction System Troubleshooting - Continued
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TB 9-2300-378-14
Table 6-3. Improved Clean Air Induction System Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
VEHICLE EXHAUST DUST EJECTOR SYSTEM (VEDES)
AIR CLEANER FILTER ELEMENTS REQUIRE CLEANING TOO OFTEN, ACCOMPANIED
1.
BY:
EXCESSIVELY DIRTY ELEMENT
A.
Step 1.
Inspect exhaust protector cap for free action or damage. Repair or replace
as necessary.
Inspect precleaned and dust scavenge sections of air cleaner through
Step 2.
inspection holes for plugging from dust, mud, or snow. Clean out as
required.
Inspect scavenge tubes and hoses for loose clamps, holes, or cracks.
Step 3.
a. Tighten or replace clamps as required (para. 6-16a).
Replace tubes or hoses as required (para. 6-16a).
b.
Inspect check valve for free action. Replace as necessary (para. 6-16 b).
Step 4.
B.
LOW POWER AND EXCESSIVE BLACK EXHAUST SMOKE
Inspect air intake at turret bulkhead for clogging or restriction. Clean out
Step 1.
as necessary.
Inspect air cleaner intake hose for collapsed condition. Replace as
Step 2.
necessary (para. 6-9).
Inspect engine intake manifold for leaks. Notify direct support to repair or
Step 3.
replace.
SOOT AND/OR MOISTURE ON FILTER ELEMENT AND/OR DARK COLORED WATER OR
2.
MUD IN SCAVENGE TUBE OR CHECK VALVE.
Inspect exhaust protector cap for free action or damage. Repair or replace
Step 1.
as necessary (TM 20-1).
Inspect check valve for free action. Replace as necessary (para. 6-16b).
Step 2.
HIGH FILTER CLOG INDICATOR READING DURING HEAVY SNOW OPERATION
3.
ACCOMPANIED BY LOW POWER AND EXCESSIVE BLACK EXHAUST SMOKE
Inspect for heavy snow or ice accumulations in air cleaner filter compartment and
precleaned dust scavenge sections.
NO FILTER CLOG INDICATOR READING ACCOMPANIED BY LOW POWER AND
4.
EXCESSIVE BLACK EXHAUST SMOKE.
Inspect and clean filter.
Step 1.
Start engine and look for reduction in exhaust smoke.
Step 2.
If a reduction in exhaust smoke occurs replace filter clog indicator; if not
Step 3.
notify direct support maintenance.
ENGINE REVERSAL: VEHICLE HAS STALLED AND ROLLED BACKWARD DOWN AN
5.
INCLINE WITH TRANSMISSION IN A FORWARD GEAR
Inspect insides of both air cleaner filter elements. Replace element if charring, soot, fuel,
or burn holes are found inside, or if element seals show signs of excessive heat (para. 6-15).
6-14

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