Table 6-3. Improved Clean Air Induction System Troubleshooting - Continued

TB 9-2300-378-14

Table 6-3. Improved Clean Air Induction System Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

POWERPLANT WARNING LIGHT ON, DUST DETECTOR WARNING LIGHT ON, BUT

11.

DUST DETECTOR PRESSURE SWITCH(ES) NOT TRIPPED (FIG. 6-2) - Continued.

Disconnect connectors of engine to bulkhead lead assembly 12325929 at engine

Step 4.

disconnect and at bulkhead disconnect. Check lead assembly circuit 509B by

checking continuity to all other connector pins, connector sheels, and groun.

If continuity exists, replace engine to bulkhead lead assembly 12325929

(para 6-17d).

If continuity does not exist, go to step 5.

Disconnect connectors of hull intermediate lead assembly 12325928 at bulkhead

Step 5.

disconnect and at short lead (circuit 509B) from dust detector warning light box

harness connector. Check for lead assembly 12325928 at bulkhead connector by

checking continuity to all other connector pins, connector shells, and ground.

If continuity exists, replace hull intermediate lead assembly 12325928 (para.

6-17e).

b. If continuity does not exist, go to step 6.

Disconnect connector P1 of dust detector warning light wiring harness from dust

Step 6.

detector warning light box. Check for circuit between dust detector warning

light box and harness assembly by checking for continuity between connector

pins C and B and between connector pin C and connector shell.

a. If continuity exists, replace dust detector warning light harness (para.

6-17f).

b. If continuity does not exist, replace dust detector warning light box (para. 6-

17g, M60A3; 6-17h, M728; 6017i, M48A5AVLB, M60A1AVLB).

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

12.

DUST DETECTOR PRESSURE SWITCH(ES) NOT TRIPPED, DUST INGESTION IS

APPARENT.

Service dust detector filter strip (see quarterly PMCS, item 23).

Step 1.

Check air pressure hoses for blockage and correct installation (para. 6-17 b).

Step 2.

Perform dust detector operational test (para. 6-17j).

Step 3.

If dust detector is operational go to step 6.

b. If dust detector is not operational, go to step 4.

Replace dust detector pressure switch(es) (para. 6-17b).

Step 4.

Perform dust detector operational test (para. 6-17h).

Step 5.

If dust detector is operational go to step 6.

If dust detector is not operational, notify support maintenance.

Step 6.

Change engine oil and filter. Run engine 10 hours. Take engine oil sample and

submit to AOAP laboratory per LO-12.

6-19