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 224 of 1563

TM 9-2815-220-24

CYLINDER COMPRESSION TEST

0033 00

BEFORE TEST (Continued)

3. Install compression adapter (2) into fuel injector nozzle holder opening and tighten securely.

4. Install gauge assembly (3) (item 24, WP 0176) onto compression adapter (2) and tighten

securely.

3

4

2

TEST

1. Crank engine several seconds or until compression gauge (3) reaches maximum reading.

a. Cylinder compression must be within 330 to 480 psi (2,275 to 3310 kPa) at engine

cranking speed.

2. Depress gauge vent valve (4) to release pressure and reset gauge (3) to zero after compression

reading is taken.

3. Test compression on all cylinders in the same manner.

WP 0033 00-2