TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 174 of 1563

TM 9-2815-220-24

CLEAN AIR SYSTEM TROUBLESHOOTING

0026 00

MALFUNCTION 1:

(Continued)

Abnormal operation of dust detector system (power plant warning lamp and dust detector

warning lamps ON, with pressure switch plunger(s) visible).

PROBABLE CAUSE

CORRECTIVE ACTION

f.

Defective wiring harness.

(1) Inspect electrical leads for broken wire or

damaged connectors.

Check for

continuity using a voltmeter.

Replace

defective cable assembly (WP 0067, Dust

Detector Harness Replacement).

g. Air cleaner access door seals damaged or

cam arm pins worn or broken.

(1) Repair or replace as necessary, refer to

pertinent vehicle technical manual.

h. Leak in engine induction system

(turbosupercharger compressor housing and

engine air induction manifold).

(1) Inspect engine turbosupercharger and

manifold system.

Clean, tighten, or

replace parts as necessary (WP 0037,

Induction Leak Test).

i.

Oil leakage from turbosupercharger

compressor side bearing and seal.

(1) Repair turbosupercharger as shown in

TM 9-2990-205-34&P, and TM 9-2990-

206-34&P, or replace turbosupercharger

(WP 0099 Turbosupercharger Assembly

Replacement).

(WP 0100 for 2DR)

j.

Ingestion of re-circulated smoke/fuel caused

by missing/broken air cleaner access door

seals or components.

(1) Repair or replace as needed.

k. Ingestion of re-circulated exhaust smoke

caused by missing/broken air cleaner access

door seals or components.

(1) Repair or replace as needed.

L. Air cleaner filter damaged or punctured due

to installation, disassembly, or foreign

objects.

(1) Service air cleaner; refer to pertinent

vehicle technical manual.

WP 0026 00-2